cas 36809-26-4, 4-Bromotriphenylamine | Articles data

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Comparison of two strategies to improve organic ternary memory performance: 3-Hexylthiophene linkage and fluorine substitution
In this paper, two acceptor-donor-acceptor (A-D-A) type organic small molecules, 4,4'-(5,5'-(benzo[c] [1,2,5]thiadiazole-4,7-diyl)bis(3-hexylthiophene-5,2-diyl))bis(N-(4-nitrophenyl)-N-phenylaniline) (NTPA2TBT) and 4,4'-(5,6-difluorobenzo[c] [1,2,5]thiadiazole-4,7-diyl)bis(N-(4-nitrophenyl)-N-phenylaniline) (NTPA2BTF2), were synthesized and fabricated into resistive random access memory devices. Compared with our previously reported molecule NTPA2BT, NTPA2TBT has 3-hexylthiophene linkages bridging its donor and acceptor, while there are two additional fluorine atoms in the benzothiadiazole moiety for NTPA2BTF2. Both the fabricated memory devices based on these two new molecules perform nonvolatile ternary memory characteristics with lower threshold voltages, higher reproducibility and better stability. The addition of 3-hexylthiophene bridges significantly promotes the planarity of the conjugation backbone and facilitates the molecular stacking, while the substitution hydrogen by fluorine improves the intermolecular interaction, and thus also induces an ordered molecular stacking. The insertion of 3-hexylthiophene bridges or fluorine atoms could be an effective strategy of tailoring organic molecules to improve data storage performance with lower power consumption.
Bao, Qing,Li, Hua,Li, Yang,He, Jinghui,Xu, Qingfeng,Li, Najun,Chen, Dongyun,Wang, Lihua,Lu, Jianmei
p. 306 - 313
(2016)
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Unexpected De-arylation of a pentaaryl fullerene
A triphenylamine-derived pentaaryl fullerene undergoes an unusual oxidative dearylation under basic conditions to give tetraarylated epoxy fullerene in high yield. The structure of the product was confirmed by single crystal X-ray diffraction. A mechanism is proposed to account for the loss of the addend and the subsequent formation of the epoxide group.
Clavaguera, Simon,Khan, Saeed I.,Rubin, Yves
p. 1389 - 1391
(2009)
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13C NMR Study of ortho-, meta- and para-Substituted Phenylhiphenylamines: Substituent Effect Correlations
The 13C chemical shifts of 11 substituted triphenylamines have been determined and the assignment of these resonances made using intensities, 1H and 19F couplings and predictions from bond additivity relationships. 13C chemical shifts at carbons bearing the substituent and at carbons ortho to the substituent correlated reasonably well with the Q parameter.A multiple regression analysis of chemical shifts with the field and resonance parameters of Swain and Lupton and the Q parameter produced significantly better correlations than those obtained when Q was omitted for these positions. 13C chemical shift correlations for carbons meta and para to the substituent were not significantly better than when Q was omitted.Significant correlations were obtained between field and resonance parameters and 13C chemical shifts of C-o and C-p, and C-i, C-o, C-m and C-p of the non-substituent bearing phenyl rings in ortho- and para-substituted phenyldiphenylamines, respectively.
Grimley, Eugene,Collum, David H.,Alley, Earl G.,Layton, Bobby
p. 296 - 302
(1981)
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The improvement of photovoltaic performance of quinoline-based dye-sensitized solar cells by modification of the auxiliary acceptors
Three new dyes containing diphenylamine as electron donor, benzene (BIM1), benzothiadiazole (BTD) (BIM2) and N-ethylhexylbenzotriazole (BTZ) (BIM3) as auxiliary electron acceptors, quinoline as π-bridge and cyanoacrylic acid as anchoring group were synthesized in D-A-π-A structure for use in dye-sensitized solar cells (DSSCs). The optical, electrochemical, theoretical and photovoltaic methods were performed to understand the auxiliary acceptor influence on the performance of these dyes. Compared to the other dyes, the DSSC with dye BIM3 slightly increases the open circuit voltage (Voc) owing to the retardation of charge recombination by BTZ. However, replacement of benzene or BTZ by BTD unit causes a large red shift of the absorption spectra, leading BIM2 cell to produce the highest short circuit current density (Jsc). Thus, among the three D-A-π-A dyes, BIM2 is determined to be the most efficient dye, which reached a Voc of 0.627 V and Jsc of 11.53 mA cm–2, corresponding to an overall power conversion efficiency of 5.21 % in the presence of chenodeoxycholic acid (CDCA) as the coadsorbent. These results suggest that the insertion of benzothiadiazole as auxiliary acceptor into quinoline-based D-A-π-A dyes can effectively improve photovoltaic performance of DSSCs.
?i?man, ?lkay,Arkan, Burcu,Arslan, Bar?? Se?kin,Avc?, Davut,Derin, Yavuz,Gezgin, Merve,Nebio?lu, Mehmet,Tutar, Ahmet
(2020/10/07)

Multi-fold Sonogashira coupling: A new and convenient approach to obtain tetraalkynyl anthracenes with tunable photophysical properties
For the first time, a direct single-step one-pot route to access nine new symmetric tetraalkynylated anthracenes via Pd(CH3CN)2Cl2/cataCXiumA catalyzed tetra-fold Sonogashira coupling is reported. Five of these tetraalkynylated anthracenes have been crystallographically characterized, with two of them exhibiting multiple interactions that significantly shorten the inter-planar distances in the solid-state structure. The rich photophysical properties exhibited by these molecules hold immense promise for future applications in sensors and optoelectronic devices. Two of the considered tetraalkynylated anthracenes comprising a D-π-A-π-D motif demonstrate solvatochromism and halochromism, with one of them showing a low bandgap of 1.79 eV. The remaining compounds demonstrate bandgaps in the range of 1.79-2.04 eV.
Islam, Khadimul,Narjinari, Himani,Bisarya, Akshara,Kumar, Akshai
p. 9692 - 9704
(2021/11/30)

Metallated Graphynes as a New Class of Photofunctional 2D Organometallic Nanosheets
Two-dimensional (2D) nanomaterials are attracting much attention due to their excellent electronic and optical properties. Here, we report the first experimental preparation of two free-standing mercurated graphyne nanosheets via the interface-assisted bottom-up method, which integrates both the advantages of metal center and graphyne. The continuous large-area nanosheets derived from the chemical growth show the layered molecular structural arrangement, controllable thickness and enhanced π-conjugation, which result in their stable and outstanding broadband nonlinear saturable absorption (SA) properties (at both 532 and 1064 nm). The passively Q-switched (PQS) performances of these two nanosheets as the saturable absorbers are comparable to or higher than those of the state-of-the-art 2D nanomaterials (such as graphene, black phosphorus, MoS2, γ-graphyne, etc.). Our results illustrate that the two metallated graphynes could act not only as a new class of 2D carbon-rich materials, but also as inexpensive and easily available optoelectronic materials for device fabrication.
Huang, Bolong,Li, Jiahua,Sun, Jibin,Sun, Mingzi,Tang, Tianhong,Wang, Zhengping,Wong, Wai-Yeung,Xie, Zheng,Xu, Linli,Zhang, Hongyang,Zhang, Jianqi
supporting information
p. 11326 - 11334
(2021/04/09)

Optical and electrochemical effects of triarylamine inclusion to alkoxy BODIPY-based derivatives
Three new triphenylamine-BODIPY dyadsBDPT1-3have been designed and synthesized. Their optoelectronic properties were investigated, which revealed strong electronic interactions between the donor and acceptor moieties, together with high sensitivity to the inclusion of alkoxy groups. The properties of the dyads were compared with those of reference compoundsAandBDP1, which exhibit broader absorption in the visible region as a result of the inclusion of donor groups and extended conjugation of the BODIPY core. Fluorescence quenching was also observed, which was attributed to the photoinduced electron transfer, evidenced from solvatochromic measurements, quantum yields and theoretical calculations. The oxidation potentials of new compounds were found to be lower when compared with those of other BODIPY analogues with donor groups attached. The redox, computational, absorbance and emission data suggest that compoundsBDPT1-3exhibit promising properties for their application in organic photovoltaic or light emitting (optoelectronic) devices.
Insuasty, Alberto,Madrid-Usuga, Duvalier,Mora-León, Ana G.,Ortiz, Alejandro,Rocha-Ortiz, Juan S.
p. 18114 - 18123
(2021/10/12)

COMPOUND FOR ORGANIC LIGHT EMITTING DIODE, ORGANIC LIGHT EMITTING DIODE HAVING THE SAME, AND DISPLAY APPARATUS HAVING ORGANIC LIGHT EMITTING DIODE
The present disclosure relates to a compound for an organic electronic device represented by chemical formula 1, an organic electronic device including the same, and a display apparatus including the organic electronic device. Details of chemical formula 1 are as defined on the specification. According to the present invention, it is possible to provide the compound for an organic electronic device having excellent performance.COPYRIGHT KIPO 2020
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Paragraph 0203-0205

(2020/04/23)

D-A type excited state proton transfer high-efficiency fluorescent material, and preparation method and application thereof
The invention belongs to the technical field of organic fluorescent materials, and discloses a D-A type excited state proton transfer high-efficiency fluorescent material, and a preparation method andan application thereof. The specific structure of the D-A type excited state proton transfer high-efficiency fluorescent material is shown in the specification. The method comprises the following steps: carrying out a Suzuki coupling reaction on triphenylamine-4-boronic acid pinacol ester and 4-bromo-2-((N-phenyl)-9,10-phenanthroimidazole)phenol in a catalytic system, and carrying out subsequenttreatment to obtain the organic small molecular fluorescent material with the D-A structure. The fluorescent material has efficient fluorescence quantum efficiency, and can improve the luminous efficiency of an OLED device; and the large delta ET2-T1 and the small delta ES1-T2 are helpful for T2 to jump to the reverse system of S1, so that the exciton utilization rate and the external quantum efficiency of the OLED device are improved. The method is simple. The application is an application f the fluorescent material in the organic light-emitting device.
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Paragraph 0026-0032

(2020/05/05)

Synthesis of a new solvent-responsive pillar[5]arene-based [1]rotaxane molecular machine
In this work, we designed a new pillar[5]arene-based molecular machine responsive to the polarity of different solvents, which can exist in an interlocked structure in CDCl3 and CD3OD, and can exist in an extended form in DMSO and was studied by 1H and 2D NMR spectroscopy, HR(MS) and fluorescence spectroscopy.
Li, Runan,Lin, Po-Han,Meguellati, Kamel,Tian, Huasheng
supporting information
p. 10628 - 10632
(2020/07/13)

Three series π-extended fluorescent compounds based on dehydroabietic acid triarylamine moiety: Syhthesis, photophysical properties and hole transporting properties
Fluorescent compounds based on a dehydroabietic acid skeleton with favorable photophysical properties show promise for use as the hole-transporting layer in organic light-emitting diodes (OLEDs). In this work, we report the synthesis of three series of compounds (15 in total), series 1 (1a–1e), series 2 (2a–2e), and series 3 (3a–3e), by linking polycyclic aromatic hydrocarbons (PAHs) to dehydroabietic acid-based triaryamine moiety through C-C coupling reactions. The three series of compounds exhibited ultraviolet absorption, fluorescence emission, electrochemical, and thermal properties, as well as highest occupied molecular orbital levels and energy gaps that made them suitable for use as hole-transporting materials. OLEDs with 1a, 2a, or 3d as a hole-transporting layer showed better performance in terms of maximum brightness, turn-on voltage, maximum of external quantum efficiency, maximum luminous efficiency and power efficiency than that of a comparable device based on a conventional hole-transporting material. In particular, the device with 1a exhibited the most promising performance, with a high maximum brightness of 21445 cd/m2, low turn-on voltage of 2.8 V, maximum of external quantum efficiency of 1.62%, maximum luminance efficiency of 4.9 cd/A, and maximum power efficiency 3.7lm/W. The present work highlights the potential of π-extended compounds based on dehydroabietic acid for use in luminescent material applications.
Gao, Hong,Gao, Yanan,Shang, Shibin,Song, Jie,Song, Zhanqian,Tan, Guanni,Zhang, Xinwen
(2020/05/25)

ORGANIC ELECTROLUMINESCENCE ELEMENT AND MATERIAL
PROBLEM TO BE SOLVED: To provide a phosphorescent metal complex emitting blue light, which shows a low drive voltage, high emission efficiency, high color purity of emission and a long emission life when used for an element, and to provide an organic electroluminescence element containing the above metal complex. SOLUTION: The present invention provides a compound represented by general formula (I): ML1mL2n, and an organic electroluminescence element containing the above compound. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2020,JPOandINPIT
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Paragraph 0329-0330; 0364-0365

(2020/05/16)

Styryl-based compound and organic light emitting diode comprising the same
A styryl-based compound represented by Formula 1 below is disclosed. An organic light-emitting diode including the styryl-based compound is also disclosed.
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Paragraph 0292; 0296-0298; 0445; 0449-0451

(2020/06/30)

4-(2-thienyl)triphenylamine and derivatives thereof, and preparation method and application of 4-(2-thienyl)triphenylamine and derivatives thereof
The invention discloses 4-(2-thienyl)triphenylamine and derivatives thereof, and a preparation method and application of the 4-(2-thienyl)triphenylamine and the derivatives thereof. The 4-(2-thienyl)triphenylamine and the derivatives thereof have the structure represented by formula (I) or formula (II), wherein X is a halogen atom. The 4-(2-thienyl)triphenylamine and the derivatives thereof have strong absorption ability to ultraviolet rays and can be used as an ultraviolet absorber; moreover, when the 4-(2-thienyl)triphenylamine and the derivatives thereof have the structure represented by the formula (II), the heavy atom effect of the halogen atom can cause fluorescence quenching, so that the 4-(2-thienyl)triphenylamine and the derivatives thereof do not fluoresce and do not affect penetrating light rays, the original light rays can keep an original color, and injuries to human eyes are reduced.
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Paragraph 0068; 0070; 0071; 0077; 0079

(2019/05/02)

Multiple Luminescence Responses towards Mechanical Stimulus and Photo-Induction: The Key Role of the Stuck Packing Mode and Tunable Intermolecular Interactions
Organic luminescence with different forms continues to be one of the most active research fields in science and technology. Herein, an ultra-simple organic molecule (TPA-B), which exhibits both mechanoluminescence (ML) and photo-induced room-temperature phosphorescence (RTP) in the crystalline state, provides an opportunity to reveal the internal mechanism of ML and the dynamic process of photo-induced RTP in the same molecule. Through the detailed investigation of photophysical properties together with crystal structures, the key role of molecular packing and intermolecular interactions was highlighted in the luminescence response by mechanical and light stimulus, affording efficient strategies to design potential smart functional materials with multiple luminescence properties.
Dang, Qianxi,Hu, Lanzhen,Wang, Jiaqiang,Zhang, Qunhua,Han, Mengmeng,Luo, Simeng,Gong, Yanbin,Wang, Can,Li, Qianqian,Li, Zhen
p. 7031 - 7037
(2019/05/10)

Triarylamine-BODIPY derivatives: A promising building block as hole transporting materials for efficient perovskite solar cells
In this work, the syntheses and characterization of four new TPA-BODIPY dyads as hole-transporting layers (HTLs) are reported. The photophysical and electrochemical properties of the dyads BTPA-I, BTPA-II, BTPA-III and BTPA-IV are investigated in solution and compared with the reference compounds BDP, BDP1, BDP2, TPA, A (triphenylamine) and B (4,4′-dimethoxitriphenylamine). The TPA-BODIPY derivatives strongly absorb visible light and upon photoexcitation at the BODIPY unit, these dyads undergo photoinduced electron transfer to form the corresponding charge-separated species, which was confirmed by solvatochromic measures of fluorescence. Their redox potentials and photophysical properties suggested that the new BTPAs derivatives showed a better ionization potential that free triphenylamines, which makes them promising candidates to use as hole transport layers (HTLs).
Ortiz, Alejandro
(2019/07/09)

New compounds and organic light-emitting diode including the same
PURPOSE: A compound is provided to improve luminous efficiency and to make low voltage operation possible when applied to an organic electroluminescence device by having low driving voltage and excellent luminous efficiency. CONSTITUTION: A compound is represented by chemical formula 1. In chemical formula 1, each R is selected from hydrogen, deuterium, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C7-30 alkyl, substituted or unsubstituted C3-30 cycloalkyl, substituted or unsubstituted C5-30 cycloalkenyl, substituted or unsubstituted C1-30 alkoxy, substituted or unsubstituted C6-30 aryloxy, substituted or unsubstituted C1-30 alkylthioxy, substituted or unsubstituted C5-30 arylthioxy, substituted or unsubstituted C1-30 alkylamine, substituted or unsubstituted C5-30 arylamine, substituted or unsubstituted C5-50 aryl, substituted or unsubstituted C3-50 heteroaryl, substituted or unsubstituted silicon, substituted or unsubstituted boron, substituted or unsubstituted silane, carbonyl, phosphoryl, amino, nitrile, hydroxy, nitro, halogen, amide, and ester.
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Paragraph 0314-0320

(2019/08/30)

COMPOUND FOR ORGANIC DYES OF DYE-SENSITIZED SOLAR CELL AND DYE-SENSITIZED SOLAR CELL COMPRISING THE SAME
The present invention relates to a compound for an organic dye of a dye-sensitized solar cell and the dye-sensitized solar cell including the same. The compound for an organic dye of a dye-sensitized solar cell includes anthracene-thiophene as a andpi;-spacer and is represented by chemical structural formula 1. In chemical structural formula 1, X is an anchoring group of organic dye and is any one of chemical structural formulas 2-1 to 2-3. The present invention enhances an intramolecular charge transfer through an anchoring group.COPYRIGHT KIPO 2020
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Paragraph 0090-0096

(2019/12/31)

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND A ELECTRONIC DEVICE THEREOF
The present invention relates to a compound for an organic electronic element, an organic electronic element using the same, and an electronic device thereof and, more specifically, to a novel compound comprising O atom heterocycles capable of improving luminous efficiency, stability, and service life of an element, an organic electronic element using the same, and an electronic device thereof.
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(2019/12/31)

Amine derivative containing spiro structure and electronic component using amine derivative
The invention belongs to the technical field of photoelectric material application science and technology, and particularly relates to an amine derivative containing a spiro structure and an electronic component using the amine derivative. According to the provided amine derivative containing the spiro structure, a compound with larger twist angles is formed on a plane of a larger rigid spiro structure through modification and construction of amine groups rich in holes. The compound has higher triplet-state energy level and eurytopic forbidden bandwidth besides higher carrier transport efficiency, and excitons are limited in a light emitting layer to a great extent. A proper parent nucleus structure and modification by a specific functional group endow the compound with good film forming property, thermal stability, hole transport efficiency and electronic blocking function, and the compound is an ideal hole transport material and electronic blocking material.
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Paragraph 0039-0042

(2020/01/03)

Construction of 3,7-Dithienyl Phenothiazine-Based Organic Dyes via Multistep Direct C-H Arylation Reactions
Herein, an effective and feasible approach to prepare 3,7-dithienyl phenothiazine-based organic dyes has been developed. In this synthetic procedure, the Pd-catalyzed multistep direct C-H arylation of thiophene derivatives with phenothiazine bromides was employed for the first time to construct the 3,7-dithienyl phenothiazine core scaffold, which greatly streamlines access to this class of organic dyes. 3-Thienyl phenothiazine-based dyes were also synthesized via the direct C-H arylation of thiophenes as references. Most of the 3,7-dithienyl phenothiazine-based dyes exhibit better photovoltaic performances than the 3-thienyl phenothiazine-based dyes. Among these organic dyes, the solar cell device based on 6d exhibits the highest conversion efficiency of 8.9%. Compared with 6d, organic dyes with longer π-conjugation, also including bithiophene as the π-spacer, show dramatically reduced conversion efficiencies of cell devices. The introduction of the more electron-rich 3,4-ethylenedioxythiophene to the C3- and/or C7-position of phenothiazine instead of thiophene does not significantly improve the photoelectric conversion performance. The highly efficient synthetic strategy herein developed and these primary results may be helpful to design and synthesize a variety of new 3,7-dithienyl phenothiazine-based organic dyes.
Wang, Wen,Li, Xiaoyu,Lan, Jingbo,Wu, Di,Wang, Ruilin,You, Jingsong
p. 8114 - 8126
(2018/06/11)

Carbonyl compound with diphenylbenzidine as conjugate main body structure as well as preparation method and application of carbonyl compound
The invention relates to the technical field of new material organic chemicals, in particular to a carbonyl group-containing novel photoinitiator with diphenylbenzidine as a conjugate main body structure, shown as a formula (I), a chemical preparation process technology of the carbonyl group-containing novel photoinitiator, use of the carbonyl group-containing novel photoinitiator as a radiation curing photoinitiator, a radiation curing formula product of the carbonyl group-containing novel photoinitiator and particularly application use of the carbonyl group-containing novel photoinitiator invarious places of photocureable coatings, printing ink or the like. The formula (I) is described in the following description.
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Paragraph 0035; 0036; 0041; 0053

(2018/10/04)

Pyrimido-isoindole derivative and organic light-emitting device with same
The invention discloses a pyrimido-isoindole derivative and an organic light-emitting device with the same. The organic light-emitting device comprises a cathode, an anode and one or a plurality of organic matter layers. The organic matter layers are positioned between the cathode and the anode, and at least one of the organic matter layers comprises the pyrimido-isoindole derivative. The pyrimido-isoindole derivative and the organic light-emitting device have the advantages that the pyrimido-isoindole derivative has large conjugation systems and is high in hole mobility and good in hole transport performance; the pyrimido-isoindole derivative is good in heat stability and solubility and favorable for material film formation; the organic light-emitting device with the pyrimido-isoindole derivative used as the corresponding organic matter layer only requires low driving voltages and is high in light-emitting efficiency and light-emitting brightness and long in service life.
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Paragraph 0053-0056

(2018/03/09)

Triarylated amine derivative based on imidazo pyrrole and organic light-emitting device of triarylated amine derivative
The invention provides a triarylated amine derivative based on imidazo pyrrole and an organic light-emitting device of the triarylated amine derivative, belonging to the technical field of organic light-emitting materials. By introducing a rigid and dense structure of a condensed ring, the triarylated amine derivative of the imidazo pyrrole has high thermal stability and good film-forming property, and can be used for preparing the organic light-emitting device, above all, as a hole-transport material in the organic light-emitting device, the triarylated amine derivative has the advantages ofhigh efficiency and long service life, and is superior to a current frequently-used OLED (organic light-emitting diode) device. The obtained triarylated amine derivative based on the imidazo pyrrole has a good application effect in the OLED light-emitting device, and has a good industrialization prospect.
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Paragraph 0058; 0059

(2018/03/24)

A fluorene derivative and organic light-emitting device (by machine translation)
The invention discloses a fluorene derivatives and organic light-emitting device, relates to organic photoelectric material technical field. The invention of fluorene derivatives conjugated system is relatively large, so it has higher hole mobility, and exhibits a good hole transmission performance, in addition the invention of fluorene derivatives also has good thermal stability and solubility, beneficial material into a film; the application of the fluorene derivatives as the organic matter layer of the organic light emitting device, with a relatively low driving voltage, high luminous efficiency and the luminous brightness, and has a long service life. (by machine translation)
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Paragraph 0058; 0059-0061

(2018/03/26)

Imidazopyrrole derivative and organic light-emitting device using same
The invention provides an imidazopyrrole derivative and an organic light-emitting device using the same, and belongs to the technical field of organic light-emitting materials. Through introduction offused ring-type rigid and dense structures, the obtained imidazopyrrole derivative is high in heat stability and good in film-forming property; the imidazopyrrole derivative can be used for preparingthe organic light-emitting device, especially as a hole transport material in the organic light-emitting device; the organic light-emitting device has the advantages of high efficiency and long service life, and is superior to the existing common OLED (organic light-emitting diode) device. The obtained imidazopyrrole derivative has a good application effect in the OLED device and has a good industrialization prospect.
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Paragraph 0059; 0061

(2018/03/25)

Benzopyrimidine derivative and organic luminescent device thereof
The invention discloses benzopyrimidine derivative and an organic luminescent device thereof. The organic luminescent device disclosed by the invention comprises a negative pole, a positive pole and one or a plurality of organic matter layers, wherein the organic matter layers are arranged between the negative pole and the positive pole, and at least one organic matter layer contains the benzopyrimidine derivative disclosed by the invention. The benzopyrimidine derivative disclosed by the invention has the advantages of larger conjugated system, higher hole mobility and better hole transfer performance. In addition, the benzopyrimidine derivative disclosed by the invention further has better thermal stability and solubility and is favorable for film formation of materials. As the benzopyrimidine derivative disclosed by the invention can be used as the organic luminescent device of the organic matter layer, the benzopyrimidine derivative has the advantages of lower driving voltage, higher luminous efficiency and luminous brightness and longer service life.
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Paragraph 0055-0058

(2018/04/03)

Phenanthroimidazole derivative and organic light-emitting device thereof
The invention provides a phenanthroimidazole derivative and an organic light-emitting device thereof, and belongs to the technical field of organic light-emitting materials. According to the phenanthroimidazole derivative, a condensed-ring-type rigid and dense structure is introduced, so that the phenanthroimidazole derivative obtained by a preparation method disclosed by the invention has high heat stability and good film forming performance, can be used for preparing an organic light-emitting device, especially can be used as a hole transmission material in the organic light-emitting device,exerts the advantages of high efficiency and long service life, and is superior to existing common OLED devices. The phenanthroimidazole derivative has a good application effect in an OLED light-emitting device and has a good industrialization prospect.
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Paragraph 0060-0061

(2018/05/01)

Organic luminescence compound and organic luminescence device thereof
The invention discloses an organic luminescence compound and an organic luminescence device thereof, and relates to the technical field of an organic photoelectric material. A conjugated system of theorganic luminescence compound is great, so that higher hole mobility is realized; good hole transmission performance is shown. In addition, the organic luminescence compound provided by the inventionalso has good thermal stability and solubility; the film forming of the material is facilitated. The organic luminescence device using the organic luminescence material as an organic matter layer hasthe advantages that the driving voltage is lower; the luminescence efficiency and luminescence brightness are high; the service life is longer.
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Paragraph 0064-0066

(2018/05/16)

Triarylated amine derivative and organic light emitting device thereof
The invention provides a triarylated amine derivative and an organic light emitting device thereof and belongs to the technical field organic light emitting materials. Due to introduction of condensednucleus rigid and dense structures, the triarylated amine derivative provided by the invention is high in thermal stability and good in filming property, can be used for preparing organic light emitting devices, and particularly used as a hole-transport material in the organic light emitting devices, and thus the organic light emitting devices have the advantages of high efficiency and long service lives and are superior to conventional common OLED (Organic Light Emitting Diode) devices. The triarylated amine derivative provided by the invention has good application effects in OLED devices and has good industrialization prospects.
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Paragraph 0059; 0060; 0061

(2018/03/26)

Effect of anchoring group in anthracene/ thiophene-bridged triphenylamine-based organic dyes for dye-sensitized solar cells
Triphenylamine-based metal-free organic dyes (D1–D3) with different electron acceptors such as 2-cyanoacetic acid, rhodanine-3-acetic acid, or 5-oxo-1-phenyl-2-pyrazolin-3-carboxylic acid connected through anthracene and thiophene -spacers were synthesized and applied in dye-sensitized solar cells. The photophysical and electrochemical properties of these dyes were investigated and their performance as sensitizers in dye-sensitized solar cells was evaluated. Electrochemical studies showed that the lowest unoccupied molecular orbital energy levels can be tuned by introduction of various anchoring groups with different electron withdrawing abilities. The power conversion efficiencies of the dye-sensitized solar cells based on D1–D3 decreased as the electron withdrawing ability of their anchoring groups increased in the order D1 D2 D3. The D1-based device showed the highest power conversion efficiency (1.27%).
Thuy, Le Thi,Ho, Phuong,Bao, Le Quoc,Thuy, Chau Thi Thanh,Cheruku, Rajesh,Jo, Hyun-Jun,Thogiti, Suresh,Kim, Jae Hong
p. 8053 - 8060
(2017/08/18)

Efficient thermally activated delayed fluorescence of functional phenylpyridinato boron complexes and high performance organic light-emitting diodes
A new series of functional phenylpyridinato boron complexes possessing thermally activated delayed fluorescence (TADF) has been strategically designed and synthesized. These boron complexes utilize phenylpyridine as the electron acceptor (A) that links to carbazole or triphenyl amine as the electron donor (D) via a core boron atom, forming four-coordinate neutral boron complexes. The selection of boron to spatially separate the donor and acceptor takes advantage of facile functionalization. The TADF properties of the resulting D-A functional materials in various solvents have been investigated via their emission spectra and associated relaxation dynamics. The results show that the operation of TADF is strongly solvent polarity dependent in fluid states, and several underlying mechanisms are discussed. OLEDs fabricated by fppyBTPA and dfppyBTPA show EL efficiencies of up to (20.2%, 63.9 cd A?1, 66.9 lm W?1) and (26.6%, 88.2 cd A?1, 81.5 lm W?1), respectively, in which a nearly 27% EQE for the dfppyBTPA device is among the most efficient TADF OLEDs so far.
Shiu, Yi-Jiun,Chen, Yi-Ting,Lee, Wei-Kai,Wu, Chung-Chih,Lin, Tzu-Chieh,Liu, Shih-Hung,Chou, Pi-Tai,Lu, Chin-Wei,Cheng, I-Chen,Lien, Yi-Jyun,Chi, Yun
p. 1452 - 1462
(2017/02/19)

Effects of donors of bodipy dyes on the performance of dye-sensitized solar cells
A new series of donor-acceptor-π-linker-acceptor (D–A–π–A) featured organic dyes containing Bodipy derivative as the auxiliary acceptor, furan unit as the π conjugated spacer, and 2-cyanoacrylic acid as the anchor group were synthesized and applied in dye-sensitized solar cells (DSSCs). The incorporated electron-withdrawing unit of Bodipy enhances light harvesting by decreasing the molecular energy gap and red-shifting absorption spectra. For comparison, three different arylamine chromophores namely 3-methoxy-9H-carbazole (CBZ-B), triphenylamine (TPA-B) and phenoxazine (POZ-B) were separately appended onto the 6-position of Bodipy unit to study the effect of the electron donating groups on device performance. The UV–vis absorption spectra, electrochemical properties, density functional theory calculation, photovoltaic properties and electrochemical impedance measurements of DSSCs with these three dyes were systematically investigated. The Bodipy dyes have broad absorption spectra covering the range of 250–700?nm with the highest molar extinction coefficient up to >55?000?M?1?cm?1. The molecular energy level tuning can be conveniently accomplished by alternating the donor moiety. The DSSCs based on TPA-B showed the best photovoltaic performance: a maximum monochromatic incident photon-to-current conversion efficiency (IPCE) of 70%, a short-circuit photocurrent density (Jsc) of 13.95?mA?cm?2, an open-circuit photovoltage (Voc) of 557?mV, and a fill factor (ff) of 0.61, corresponding to an overall conversion efficiency of 4.76% under standard global AM 1.5G solar light conditions. Our research demonstrates that Bodipy based D–A–π–A molecular architecture is a highly promising class for the improvement of the performance of DSSCs in the future.
Mao, Mao,Li, Qing-Song,Zhang, Xiao-Lin,Wu, Guo-Hua,Dai, Chun-Guang,Ding, Yong,Dai, Song-Yuan,Song, Qin-Hua
p. 148 - 160
(2017/03/24)

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT COMPRISING THE SAME, AND ELECTRONIC DEVICE THEREOF
Provided are a compound of Formula 1 and an organic electric element comprising a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode, and electronic device comprising the organic electric element, wherein the driving voltage of the organic electronic device can be lowered, and the luminous efficiency and life span can be improved by comprising the compound represented by Formula 1 in the organic material layer.
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Paragraph 0177; 0178; 0187; 0188

(2017/10/18)

Poly (triphenylamine-fluorenylmethylchloroformate) dye and its application
The invention discloses a poly(triphenylamine-fluorene) dye and its application. The poly(triphenylamine-fluorene) dye is prepared through a Stille coupling reaction of a monomer having a triphenylamine structure and a monomer having a fluorene structure. The prepared poly(triphenylamine-fluorene) dye has a triphenylamine and fluorene composite donor unit structure, and can be applied in the production of dye-sensitized solar cells in order to obtain dye-sensitized solar cells with high current density and high photoelectric conversion rate.
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Paragraph 0051; 0053-0055

(2017/02/28)

Synthesis and properties of the derivatives of triphenylamine and 1,8-naphthalimide with the olefinic linkages between chromophores
Two donor-acceptor type molecules consisting of triphenylamine and 1,8-naphthalimide moieties with the olefinic linkages between chromophores were synthesized by Heck reaction. The compounds obtained are capable of forming molecular glasses with glass transition temperatures of 56 and 75 °C recorded for mono- and di-substituted derivatives of triphenylamine, respectively. They exhibit high thermal stabilities with 5% weight loss temperatures of 350 and 363 °C. Fluorescence quantum yields of the dilute solutions of the synthesized compounds range from 0.065 to 0.72 while those of the solid films are 0.028 and 0.034. The Stokes shifts increased with the increase of the solvent polarity. Cyclic voltammetry measurements revealed close values of the solid state ionization potentials (5.22 and 5.27 eV) and of electron affinities (-3.20 and -3.18 eV). For the layer of the monosubstituted derivative of triphenylamine core hole mobility was found to be 2.1 × 10-3 cm2 V-1 s-1. Good intrinsic hole transport parameters were theoretically estimated in the frame of Marcus theory, and the impact of polaron-type hole transport in these materials is discussed.
Gudeika, Dalius,Sini, Gjergji,Jankauskas, Vygintas,Sych, Galyna,Grazulevicius, Juozas V.
p. 2191 - 2201
(2016/01/20)

Feasible energy level tuning in polymer solar cells based on broad band-gap polytriphenylamine derivatives
A series of versatile broad band-gap alternating copolymers (P1, P2, P3 and P4) based on triphenylamine (TPA) and benzofurazan derivatives, differing in the substituted groups [-OC8H17, -C8H17, -CF3, -(CF3)2] in their triphenylamine units, were designed and synthesized by Suzuki polycondensation. The relationships between the substituted groups in TPA and the highest occupied molecular orbital (HOMO) energy levels, as well as the open circuit voltages (Vocs), were investigated in detail. The HOMO levels of these four polymers decreased sequentially when the substituted groups shifted from electron-donating groups [-OC8H17, -C8H17] to electron-withdrawing groups [-CF3, -(CF3)2], which led to the successive increase in Vocs of the polymer solar cells (PSCs) based on these polymers. Through the characterization of photovoltaic performance, the highest Voc, which reached up to 1.00 V, was achieved by the polymer with bis(trifluoromenthyl) substituted group (P4), which is one of the highest Voc values based on polytriphenylamine derived polymers for PSCs. Among these polymers, the one with octyl side chain (P2) showed the best photovoltaic performance with the highest short circuit current density (Jsc) and fill factor (FF), giving a Jsc of 4.84 mA cm-2, FF of 50%, Voc of 0.80 V and power conversion efficiency (PCE) of 2.22%.
Zhang, Bin,Chen, Guiting,Xu, Jin,Hu, Liwen,Yang, Wei
p. 402 - 412
(2016/01/12)

Diazene sulphonate as a cross-linking agent for polymers with pendant triarylamine hole-conducting units
Diazene sulphonates are readily available compounds which are soluble in water and polar solvents. They strongly absorb the UV-VIS light and they decompose under UV irradiation via radical or ionic intermediates. These properties render them valuable, e.g. for analytical purposes and for photo-printing. In this presentation, it will be demonstrated that polymers with a pendant diazene sulphonate function as cross-linking agents and with pendant aromatic amines as hole-transporters can be considered as useful materials for organic light-emitting device (OLED) technology.
Baranovicova, Eva,Stasko, Andrej,Nuyken, Oskar
p. 1238 - 1252
(2016/07/06)

A series of organic electroluminescent material and its preparation method and application
The invention discloses a series of organic electroluminescent materials, and a preparation method and an application thereof. A structural formula of the materials is shown as a formula I. The organic electroluminescent materials shown as the formula I have capacities of electron transportation and hole transportation. An organic electroluminescent device prepared by using the materials has a reduced starting voltage. The series of the materials have relatively good fluorescent quantum efficiency and electroluminescent efficiency, and relatively good film-forming property. Besides, the method for material synthesis and purification is simple and suitable for large-scale production. The organic electroluminescent materials are ideal selection for blue-light emitting materials of the organic electroluminescent device. Applications of the organic electroluminescent materials as luminescent materials independently or as main materials or doping dyes in luminescent layers are also in a protection range. The formula I is shown in the description.
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Paragraph 0098-0102

(2019/11/21)

Copper(I) complexes of 2-methoxy-(5-trifluoromethyl-phenyl)-pyridine-2yl-methylene-amine: Impact of phosphine ancillary ligands on luminescence and catalytic properties of the copper(I) complexes
Some copper(I) complexes of the type [Cu(L)(PPh3)2]X (X = Cl (1a), CN (1b), ClO4 (1c), BF4 (1d)) and [Cu(L)(dppe)]X (X = Cl (2a), CN (2b), ClO4 (2c) and BF4 (2d)) [where L = 2-methoxy-(5-trifluoromethyl-phenyl)-pyridine-2yl-methylene-amine; PPh3 = triphenylphosphine; dppe = 1,2-bis(diphenylphosphino)ethane] have been prepared and characterized on the basis of elemental analyses, IR, UV-Vis, 1H NMR and 31P NMR spectral studies. The representative complex of the series 1d and 2c are characterized by single crystal X-ray diffraction which reveal that, in each complex the central copper(I) ion assumes the irregular pseudo-tetrahedral geometry. All the complexes display a weak MLCT that varies considerably with phosphine ligands. Quasireversible redox behavior is accounted for all complexes corresponding to Cu(I)/Cu(II) couple and is sensitive to phosphine ligands. All the complexes exhibit blue-green emission originate from intra-ligand charge transfer (ILCT), ligand to ligand charge transfer (LLCT) transitions or mixture of them and vary markedly with the phosphine ligands. The copper(I) complexes with dppe ancillary ligand shows greater activity for the amination of iodobenzene as compared to PPh3 ancillary ligand in the complexes.
Chavan,Sawant,Pawal,More
p. 192 - 199
(2016/01/15)

COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF
In the present invention, provided is a compound represented by chemical formula 1. In addition, provided is an organic electric element which comprises a first electrode, a second electrode, and an organic matter layer. The organic matter layer is embedded between the first electrode and the second electrode, and includes a compound represented by chemical formula 1. If the organic matter layer of an organic electric element comprises the compound represented by chemical formula 1, driving voltage of the organic electric device can be reduced and luminous efficiency, color purity, and lifetime of the organic electric device can be enhanced.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transport layer(141) Buffer layer(150) Light emitting layer(151) Light-emitting assisting layer(160) Electron transport layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2016
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Paragraph 0183; 0194; 0197; 0198

(2016/10/08)

HETEROCYCLIC COMPOUNDS AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
Disclosed are a heterocyclic compound represented by chemical formula 1 and an organic electroluminescent device including the same. According to the present invention, the heterocyclic compound can be used as a material for organic substance layers in organic electroluminescent devices.
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Paragraph 0181; 0182; 0183; 0184

(2016/10/10)

HOST COMPOUNDS AND ORGANIC LIGHT EMITTING DIODE DEVICES COMPRISING THE SAME
A host compound according to an embodiment of the present invention is characterized by being represented by chemical formula 1. Here, X and Y are independently composed of substituted or unsubstituted aryl group or substituted or unsubstituted aryl amine. An organic light emitting diode device is characterized by including at least one organic film formed between a positive electrode and a negative electrode, wherein the organic film includes the host compound.COPYRIGHT KIPO 2015
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Paragraph 0070; 0071; 0072

(2016/10/17)

Carbazole-based sensitizers for potential application to dye sensitized solar cells
Two push-pull molecules employing carbazole and alkyl thiophene (CAR-THIOHX) or carbazole and triphenylamine (CAR-TPA) as donor moieties, with the cyanoacrylic group as the acceptor, have been designed and synthesized by simple organic transformations. Photophysical and electrochemical studies revealed the potential of these two systems in dye sensitized solar cells (DSSC). Under standard irradiation conditions, CAR-TPA and CAR-THIOHX exhibited 2.12 and 1.83% of overall power conversion efficiencies respectively. The moderate photovoltaic efficiency of the sensitizers has been attributed to the poor light absorption of the sensitizers in the visible region. Density functional theory (DFT) calculations have shown a strong intramolecular charge transfer character, with the HOMOs of both the sensitizers exclusively localized on the corresponding donor moieties and LUMOs on the cyanoacrylic acid acceptor. On the other hand, the calculated high dihedral angle between the carbazole donor and the phenyl bridge for these sensitizers impedes the conjugation along the dyes backbone, and thus leads to less extended and intense absorption spectra in the visible region. [Figure not available: see fulltext.]
Duvva, Naresh,Kanaparthi, Ravi Kumar,Kandhadi, Jaipal,Marotta, Gabriele,Salvatori, Paolo,De Angelis, Filippo,Giribabu, Lingamallu
p. 383 - 394
(2015/05/13)

Impact of the different electron-releasing subunits on the dye-sensitized solar cell performance of new triphenylamine-benzimidazole based molecules
New triphenylamine-benzimidazole type small molecules with different electron-releasing groups were designed and synthesized to investigate their photovoltaic performances in dye sensitized solar cells (DSSCs). Their good visible absorptions covering the 400-535 nm in addition to suitable lowest unoccupied molecular orbital (LUMO) energy levels between -3.03 and -3.11 eV make good candidates them for DSSC devices. Fluorescence quenching studies of the dyes with pristine titania support the good electron injection to conduction band of TiO2. Time resolved measurements of the dyes in solutions indicate the occurence of charge generation during the excited state. One of the used dyes in DSSC devices, TPA5a, carrying a methoxy group in triphenylamine part of the structure, gave much higher power conversion efficiency (PCE) value of 4.31% as compared to the other derivatives. Device fabricated from TPA5a dye gives good external quantum efficiency (EQE) value above 70% at 460 nm. Also, electron impedance spectroscopy (EIS) analysis of the devices gives a good explanation of the understanding of the cell performances.
Din?alp, Haluk,Saltan, G?zde Murat,Aykut, Deniz,Zafer, Ceylan
p. 157 - 165
(2015/05/13)

Triphenylamine-based π-conjugated dendrimers: Convenient synthesis, easy solution processability, and good hole-transporting properties
Two, third-generation triphenylamine-based dendrimers (DT1 and DT2) were prepared through a simple convergent approach by using a combination of versatile carbon-carbon formation reactions. It is found that the π-linkages connecting the periphery into the core have a pronounced effect on the properties of the material. The introduction of CC bonds in the periphery improves the photophysical behavior and optical qualities of the films in comparison with their introduction in the core of the dendrimer. Both dendrimers exhibit high Tgs (above 240 °C) and high-lying HOMO energy levels of ～5.2 eV. As the hole-transporting layer fabricated through a facile solution process, DT2 can endow an Alq3 based multi-layer OLED device with a maximum brightness of 5020 cd m-2, and a maximum current efficiency of 2.36 cd A-1.
Li, Zhong'An,Ye, Tenglin,Tang, Sun,Wang, Can,Ma, Dongge,Li, Zhen
supporting information
p. 2016 - 2023
(2015/04/27)

Photochemical Synthesis of Complex Carbazoles: Evaluation of Electronic Effects in Both UV- and Visible-Light Methods in Continuous Flow
An evaluation of both a visible-light- and UV-light-mediated synthesis of carbazoles from various triarylamines with differing electronic properties under continuous-flow conditions has been conducted. In general, triarylamines bearing electron-rich groups tend to produce higher yields than triarylamines possessing electron-withdrawing groups. The incorporation of nitrogen-based heterocycles, as well as halogen-containing arenes in carbazole skeletons, was well tolerated, and often synthetically useful complementarity was observed between the UV-light and visible-light (photoredox) methods.
Hernandez-Perez, Augusto C.,Caron, Antoine,Collins, Shawn K.
supporting information
p. 16673 - 16678
(2015/11/09)

The light emitting element and spiroanthracene deriv.
It is an object of the present invention to provide a luminescent material that has resistance to repeated oxidation reactions. Further, it is an object of the present invention to provide a light-emitting element that is high in luminous efficiency. Further, it is an object of the present invention to provide a light-emitting element that has a long life. An aspect of the present invention is an anthracene derivative represented by a general formula (1). In the general formula (1), R2 to R4 and R7 to R9 are individually any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a group represented by the following structure formula (2), and R1, R5, R6, and R10 are individually any one of hydrogen and an alkyl group having 1 to 4 carbon atoms.
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Paragraph 0110; 0109; 0112-0113

(2016/10/08)

Metal-Free Tetrathienoacene Sensitizers for High-Performance Dye-Sensitized Solar Cells
A new series of metal-free organic chromophores (TPA-TTAR-A (1), TPA-T-TTAR-A (2), TPA-TTAR-T-A (3), and TPA-T-TTAR-T-A (4)) are synthesized for application in dye-sensitized solar cells (DSSC) based on a donor-π-bridge-acceptor (D-π-A) design. Here a simple triphenylamine (TPA) moiety serves as the electron donor, a cyanoacrylic acid as the electron acceptor and anchoring group, and a novel tetrathienoacene (TTA) as the π-bridge unit. Because of the extensively conjugated TTA π-bridge, these dyes exhibit high extinction coefficients (4.5-5.2 × 104 M-1 cm-1). By strategically inserting a thiophene spacer on the donor or acceptor side of the molecules, the electronic structures of these TTA-based dyes can be readily tuned. Furthermore, addition of a thiophene spacer has a significant influence on the dye orientation and self-assembly modality on TiO2 surfaces. The insertion of a thiophene between the π-bridge and the cyanoacrylic acid anchoring group in TPA-TTAR-T-A (dye 3) promotes more vertical dye orientation and denser packing on TiO2 (molecular footprint = 79 ?2), thus enabling optimal dye loading. Using dye 3, a DSSC power conversion efficiency (PCE) of 10.1% with Voc = 0.833 V, Jsc = 16.5 mA/cm2, and FF = 70.0% is achieved, among the highest reported to date for metal-free organic DSSC sensitizers using an I-/I3- redox shuttle. Photophysical measurements on dye-grafted TiO2 films reveal that the additional thiophene unit in dye 3 enhances the electron injection efficiency, in agreement with the high quantum efficiency. (Graph Presented)
Zhou, Nanjia,Prabakaran, Kumaresan,Lee, Byunghong,Chang, Sheng Hsiung,Harutyunyan, Boris,Guo, Peijun,Butler, Melanie R.,Timalsina, Amod,Bedzyk, Michael J.,Ratner, Mark A.,Vegiraju, Sureshraju,Yau, Shuehlin,Wu, Chun-Guey,Chang, Robert P. H.,Facchetti, Antonio,Chen, Ming-Chou,Marks, Tobin J.
supporting information
p. 4414 - 4423
(2015/04/14)

Thermally activated delayed fluorescence of N-phenylcarbazole and triphenylamine functionalised tris(aryl)triazines
N-phenyl carbazole and triphenylamine functionalized tris(aryl)triazines, as well as the corresponding mononers, have been synthesized by Suzuki cross-coupling reactions. The electronic, photophysical and electrochemical properties of these materials can be effectively tuned by manipulation of the constitution of acceptor and donor units. N-phenyl carbazole and triphenylamine functionalized 2,4,6-trisphenyl-1,3,5-triazines exhibit small energy gaps between the singlet and triplet (0.24 eV and 0.18 eV), and offer potential for application as thermally activated delayed fluorescence materials. The results are supported by time-dependent density functional theory calculations, delayed and time-resolved fluorescence data.
Huang, Bin,Yin, Zhihui,Ban, Xinxin,Jiang, Wei,Dai, Yu,Zhang, Junya,Liu, Yuanyuan,Yang, Yaping,Sun, Yueming
p. 141 - 148
(2015/03/18)

COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
The present invention provides a novel compound to improve light emission efficiency and stability of an element and to extend lifespan of the element, an organic electronic element using the same, and an electronic device thereof. The compound is represented by chemical formula 1, wherein m is a constant in the range of zero and four, and n is a constant in the range of zero and three.(140) Hole transfer layer(141) Buffer layer(150) Light emitting layer(151) Light-emitting assisting layer(160) Electron transfer layer(170) Electron injection layer(180) Negative electrode(130) Hole injection layer(120) Positive electrode(110) SubstrateCOPYRIGHT KIPO 2015
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(2016/10/08)

C-N cross-coupling reaction catalysed by reusable CuCr2O4 nanoparticles under ligand-free conditions: A highly efficient synthesis of triarylamines
A convenient, efficient and ligand-free method for the C-N coupling reaction of anilines and aryl iodides was performed using CuCr2O4 nanoparticles. Copper chromite nanocatalyst improved the rate and facility of the synthesis of triarylamines. The heterogeneous catalyst was fully characterized by scanning electron microscopy, IR and X-ray diffraction techniques. Recyclability, excellent yields of products and short reaction times are the important advantages of this ligand-free procedure by using the CuCr2O4 nanoparticles. This journal is
Safaei-Ghomi, Javad,Akbarzadeh, Zeinab,Khojastehbakht-Koopaei, Bahareh
p. 28879 - 28884
(2015/04/14)