- New approach way using substituent group at core chromophore for solution process blue emitter
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Comparing the conventional vapor desposition process for OLEDs, the solution process using small molecules has merits of low production cost because of many reasons. For the solution process blue flourescent material, tertiary butyl (T) and anthracene (A) were first introduced as substituents to TAT core part, 2-tert-butyl-9,10-bis(3a?3,5a?3-diphenylbiphenyl-4a?2-yl)anthracene (T-TAT) and 2-(9-anthracenyl)-9,10-bis(3a?3,5a?3-diphenylbiphenyl-4a?2-yl)anthracene (A-TAT). All three materials indicated typical absorption band of anthracene in the range of 350 to 400 nm. T-TAT exhibited similar optical properties to TAT, but A-TAT has longer absorption and PL emission compared to other two compounds. In case of spin-coated film, A-TAT exhibited absorption maximum value of 408 nm and photoluminescence maximum value of 469 nm. T-TAT and A-TAT can be applicable to solution process as a blue fluorescence material.
- Lee, Sunmi,Kim, Seungho,Lee, Jaehyun,Kim, Beomjin,Park, Jongwook
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Read Online
- A small molecule composed of anthracene and thienothiophene devised for high-performance optoelectronic applications
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An asymmetric small molecule composed of anthracene and alkylated thienothiophene (2-(anthracen-2-yl)-5-hexylthieno[3,2-b]thiophene) was synthesized via the Suzuki coupling reaction. The thermal stability, photochemical properties, and morphological characteristics were investigated using thermogravimetric analysis, differential scanning calorimetry, cyclic voltammetry, UV-visible spectroscopy, and X-ray diffraction techniques. The compound demonstrated a good thermal stability of 5% at a decomposition temperature of 336 °C. The solution-processed single-crystal transistor, devised with 2-(anthracen-2-yl)-5-hexylthieno[3,2-b]thiophene, exhibited high performance with a hole mobility of 0.1 cm2/Vs. Furthermore, by utilizing the high mobility of 2-(anthracen-2-yl)-5-hexylthieno[3,2-b]thiophene, we demonstrated its unprecedented high photoresponsivity of 3370 A/W, a finding that can be attributed to the very efficient photoconductive behavior of a single crystal of 2-(anthracen-2-yl)-5-hexylthieno[3,2-b]thiophene.
- Jang, Young Ju,Lim, Byung Tack,Yoon, Soon Byung,Choi, Ho Jun,Ha, Jae Un,Chung, Dae Sung,Lee, Sang-Gyeong
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Read Online
- Synthesis and characterization of anthracene derivative for organic field-effect transistor fabrication
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Here we report on the synthesis and characterization of anthracene derivative for solution processable organic field-effect transistors. The transistor devices with bottom-contact geometry provided a maximum field-effect mobility of 3.74×10-4 cm2 V-1 s -1 as well as current on/off ratio of 5.05×104 and low threshold voltage. Structural information in the solid state is obtained by thermal analysis and two-dimensional wide angle X-ray scattering (2D-WAXS). From the 2D-WAXS, it is clear that the planes of anthracene rings and benzene ring of the molecule are different in solid state. We assume similar arrangement in the thin-film which limit the effective hopping and thus charge mobility. Copyright
- Madathil, Pramod Kandoth,Lim, Jae-Geon,Kim, Tae-Dong,Beckmann, Dirk,Mavrinskiy, Alexey,Pisula, Wojciech,Baumgarten, Martin,Mullen, Klaus,Lee, Kwang-Sup
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Read Online
- Naked eye detection of anions by 2,2¤-bianthracene derivative bearing urea groups in various organic solvents
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A highly fluorescent 2,2¤-bianthryl derivative bearing urea groups (2) was prepared as an anion receptor. The UV-vis and fluorescence titrations of 2 in various organic solvents revealed that the association constants (K11) were correlated with acceptor number and Swain acity of the solvents used, and tetrahydrofuran was found to strongly enhance the K11 for Cl1 and AcO1 due to enthalpy driven complexation, in which naked eye detection of AcO1 was achieved.
- Kondo, Shin-ichi,Osawa, Kohei,Tagaya, Hideyuki
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p. 290 - 294
(2020/04/10)
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- Thermally stable organic thin film transistors based on 2-(anthracen-2-yl)tetracene
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Organic semiconductors with high mobility and high thermal stability are of great importance for practical application of organic electronics. To explore new semiconductors by taking advantage of the intrinsic properties of tetracene molecule, herein, we report the design and synthesis of a novel p-type tetracene derivatives, 2-(anthracen-2-yl)tetracene (TetAnt). Top contact organic thin-film transistors (OTFTs) based on TetAnt show a hole mobility of up to 0.79 cm2 V?1 s?1. In addition, a high mobility of ~0.4 cm2 V?1 s?1 is maintained even after thermal stressed to a high temperature of 290 °C, indicating the excellent thermal stability of TetAnt.
- He, Chao,He, Yang,He, Yaowu,Meng, Hong,Wu, Yuting,Yu, Huinan
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- Aerobic C(sp2)-H Hydroxylations of 2-Aryloxazolines: Fast Access to Excited-State Intramolecular Proton Transfer (ESIPT)-Based Luminophores
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The direct hydroxylation of 2-aryloxazolines via a deprotonative magnesiation using TMPMgCl·LiCl and subsequent oxidation with molecular oxygen or air as a green oxidant is reported. This method proceeds under mild conditions at room temperature with high regioselectivity and chemoselectivity. The obtained phenols exhibit tunable luminescence properties, induced by excited-state intramolecular proton transfer. This method opens a new opportunity for the sustainable synthesis of luminescent organic molecules.
- G?bel, Dominik,Clamor, Nils,Lork, Enno,Nachtsheim, Boris J.
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supporting information
p. 5373 - 5377
(2019/06/07)
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- Tetracyanoanthraquinodimethane polymers and use thereof
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Novel tetracyanoanthraquinodimethane polymers and use thereof. The problem addressed was that of providing novel polymers which are preparable with a low level of complexity, with the possibility of controlled influence on the physicochemical properties thereof within wide limits in the course of synthesis, and which are usable as active media in electrical charge storage elements for high storage capacity, long lifetime and stable charging/discharging plateaus. Tetracyanoanthraquinodimethane polymers consisting of an oligomeric or polymeric compound of the general formula I have been found.
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Page/Page column 42
(2018/03/07)
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- Nitrogen-containing heterocyclic derivative and application of nitrogen-containing heterocyclic derivative to organic electroluminescence device
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The invention provides a nitrogen-containing heterocyclic derivative and application of the nitrogen-containing heterocyclic derivative to an organic electroluminescence device, and relates to the technical field of organic photoelectric materials. The nitrogen-containing heterocyclic derivative is of a structure shown in the formula I and can be used for preparing the organic electroluminescence device. A compound synthesized by the nitrogen-containing heterocyclic derivative is used as a material of an electron injection layer in the preparation of an OLED device, so that the driving voltage can be effectively reduced, and the luminescent intensity of the device can be enhanced; the nitrogen-containing heterocyclic derivative is an organic light emitting material with high performance. The device can be used in the application field of flat displays, illumination light sources, mobile phone screens, signal lamps and the like.
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Paragraph 0042; 0043
(2017/05/02)
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- PolyTCAQ in organic batteries: Enhanced capacity at constant cell potential using two-electron-redox-reactions
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The application of polymers bearing tetracyano-9,10-anthraquinonedimethane (TCAQ) units as electrode materials in organic batteries enables one narrow charge discharge plateau due to the one two-electron-redox-reaction of the TCAQ core. Li-organic batteries manufactured with this polymer display repeatable charge-discharge characteristics associated with a capacity of 156 mA h g -1 and a material activity of 97%.
- Haeupler, Bernhard,Burges, Rene,Janoschka, Tobias,Jaehnert, Thomas,Wild, Andreas,Schubert, Ulrich S.
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p. 8999 - 9001
(2014/06/10)
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- Synthesis and properties of new 9,10-anthraquinone derived compounds for molecular electronics
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Fourteen new derivatives of 9,10-anthraquinone or 9,10-dimethoxyanthracene were designed, synthesised and characterised. Regarding the structure, the compounds are π-conjugated (cross and linear, respectively) and feature thiophene terminated side arms attached to five different positions of the anthraquinone or anthracene core. The synthesis of the compounds involves a cross-coupling procedure in the key reaction steps. Crystal structures of compounds 5 and 19 have been studied. The thiophene containing title compounds 1-5 can be reduced and oxidised by a two step redox process. The electrochemical parameters have been analysed by cyclic voltammetry (CV). Theoretical calculations in the framework of all-electron density functional theory (DFT) were used to investigate the electronic structure of the individual free molecules. Furthermore, calculations of the transport properties of model devices containing compounds 1-3 and respective reduced hydroquinone derivatives assembled at Au(111) electrodes were carried out to evaluate their potential for the application as redox-active switches.
- Seidel, Nadine,Hahn, Torsten,Liebing, Simon,Seichter, Wilhelm,Kortus, Jens,Weber, Edwin
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p. 601 - 610
(2013/04/10)
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- Core expansion of perylenetetracarboxdiimide dyes with anthraquinone units for electron-accepting materials
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A perylenetetracarboxdiimide derivative containing an anthraquinone unit has been synthesized by the phototriggered intramolecular cyclization of 2-anthraquinone-substituted perylenetetracarboxdiimide. The anthraquinone- substituted perylenetetracarboxdii
- Xu, Liang,Liu, Chao,Qin, Zhihong,Jiang, Runsheng,Li, Yongjun
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p. 300 - 306
(2013/02/26)
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- Fluorescent cytotoxic compounds specific for the cellular polyamine transport system
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Cyano-substituted anthracene containing polyamines were synthesized and shown to be efficient polyamine transporter ligands. Moreover, these compounds (3 and 4) had improved fluorescence properties over previously known anthryl-polyamine conjugates, which facilitated their intracellular trafficking by confocal microscopy. These cytotoxic fluorescent agents may find use as molecular probes which traffic into cells via the polyamine transport system and may also be viable anticancer drugs which are readily quantified in human tissues due to their excellent fluorescence properties: (excitation: λ 405 nm) and emission (420 nm) occurs in the visible light range. The ability to excite and emit in the visible range provides an advantage to these probes as these wavelengths are not toxic to human cells (versus ultraviolet mediated excitations, λ400 nm) and visible light lasers are less costly to purchase and operate than UV laser sources.
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Page/Page column 8; 9
(2013/04/13)
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- Synthesis and characterization of ortho-twisted asymmetric anthracene derivatives for blue organic light emitting diodes (OLEDs)
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New ortho-twisted asymmetric anthracene derivatives have been synthesized and characterized. The anthracene derivatives show good thermal stability with high glass transition temperatures and a pure blue emission with a narrow full width at half maximum in a film state (λmax = 454 nm with 71 nm for 2-(2-methylnaphtathalene-1-yl)-9,10-di(naphthalene-2-yl)anthracene and λmax = 445 nm with 60 nm for 2-(biphenyl-2-yl)-9,10- di(naphthalene-2-yl)anthracene). A multi-layered device using 2-(2-methylnaphtathalene-1-yl)-9,10-di(naphthalene-2-yl)anthracene as an emitting material exhibits a maximum quantum efficiency of 3.61% (power efficiency of 2.15 lm/W, current efficiency of 3.55 cd/A) and blue Commission Internationale de l'Eclairage chromaticity coordinates (x = 0.15, y = 0.13). A fabricated device using 2-(biphenyl-2-yl)-9,10-di(naphthalene-2-yl)anthracene as an emitting material exhibits a maximum quantum efficiency of 3.7% (power efficiency of 2.11 lm/W, current efficiency of 3.55 cd/A) and a blue Commission Internationale de l'Eclairage chromaticity coordinates (x = 0.15, y = 0.12).
- Shin, Min-Gi,Kim, Seul Ong,Park, Hyun Tae,Park, Sung Jin,Yu, Han Sung,Kim, Yun-Hi,Kwon, Soon-Ki
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experimental part
p. 1075 - 1082
(2012/03/27)
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- A first synthesis and physical properties of asymmetric anthracenes-thiophenes bridged with ethylene
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Here we report our recent result of a new semiconductor material, which has an asymmetric structure. The synthesized molecules consist of anthracene and thiophene connected by bridged ethylene and substituted with hexyl or dodecyl groups as pendants. The semiconductors were synthesized using a McMurry coupling reaction between anthracene-2-carbaldehyde and corresponding 5-hexyl(or dodecyl)thiophene-2-carbaldehyde. A first investigation of synthesized asymmetry AVHT (9a) and AVDT (9b) for the physical properties showed that they have high oxidation potential and thermal stability. The devices prepared by using AVHT (9a) and AVDT (9b) showed the mobility of 2.6 × 10-2 cm 2/Vs and 4.4 × 10-3 cm2/Vs, respectively, in solution processed OTFTs.
- Hwang, Min Ji,Park, Ji Hee,Jeong, Eun Bin,Kang, Il,Lee, Dong Hoon,Park, Chan Eon,Singh,Choi, Ho June,Kim, Yoon-Hi,Yoon, Yong Jin,Kwon, Soon-Ki,Lee, Sang-Gyeong
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p. 3810 - 3816
(2013/01/16)
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- Anthracene derivatives and light-emitting devices using the anthracene derivatives
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The present invention provides novel anthracene derivatives. In particular, the present invention provides light-emitting elements with high luminous efficiency, and light-emitting elements with long lifetime. Further, the present invention provides light-emitting devices and electronic devices having long lifetime by using these light-emitting elements. An anthracene derivative represented by the general formula (1) is provided. In addition, since the anthracene derivative represented by the general formula (1) has high luminous efficiency, a light-emitting element using the anthracene derivative represented by the general formula (1) can also have high luminous efficiency. By using the anthracene derivative represented by the general formula (1), light-emitting elements with long lifetime can be provided.
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Page/Page column 149-150
(2012/10/23)
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- CONDENSED-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DIODE HAVING ORGANIC LAYER INCLUDING THE SAME
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A condensed-cyclic compound represented by Formula 1 and an organic light emitting diode including the same:
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- Condensed-cyclic compound and organic light emitting diode having organic layer including the same
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A condensed-cyclic compound represented by Formula 1 and an organic light emitting diode including the same:
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Page/Page column 21-22
(2011/04/18)
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- Anthracene Derivative, Light-Emitting Element, Light-Emitting Device, and Electronic Appliance
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Novel anthracene derivatives are provided. Further, a light-emitting element, a light-emitting device, and an electronic appliance each using the novel anthracene derivative are provided. Anthracene derivatives represented by general formulae (G11) and (G
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- Anthracene Derivatives and Light-Emitting Devices Using the Anthracene Derivatives
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The present invention provides novel anthracene derivatives. In particular, the present invention provides light-emitting elements with high luminous efficiency, and light-emitting elements with long lifetime. Further, the present invention provides light-emitting devices and electronic devices having long lifetime by using these light-emitting elements. An anthracene derivative represented by the general formula (1) is provided. In addition, since the anthracene derivative represented by the general formula (1) has high luminous efficiency, a light-emitting element using the anthracene derivative represented by the general formula (1) can also have high luminous efficiency. By using the anthracene derivative represented by the general formula (1), light-emitting elements with long lifetime can be provided.
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- Anthracene Derivative, Light-Emitting Material, Material for Light-Emitting Element, Composition for Coating, Light-Emitting Element, Light-Emitting Device, and Electronic Device
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An anthracene derivative represented by the general formula (G1) is provided. The anthracene derivative represented by the general formula (G1) is a novel anthracene derivative having a wide band gap. Further, the anthracene derivative has a large energy
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- Organic compounds for electroluminescence and organic electroluminescent devices using the same
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Disclosed is a novel group of compounds having a general structure of anthracene body substituted with at least one thiophenyl group, which can be further substituted with various substituent groups. These new compounds are generally compatible with organic electroluminescence. Also disclosed are organic electroluminescent devices and method of making the same. The organic electroluminescent devices include at least one of the compounds in various layers thereof. Organic electroluminescent devices employing the new compounds in their light-emitting layers show outstanding stability.
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Page/Page column 75
(2009/02/11)
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- Anthracene Derivative, Light-Emitting Material, Material for Light-Emitting Element, Composition for Coating, Light-Emitting Element, Light-Emitting Device, and Electronic Appliance
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A novel anthracene derivative with a large energy gap is provided. An anthracene derivative represented by General Formula (G1) below is provided. In the formula, Ar1 and Ar2 independently represent an aryl group with 6 to 13 carbon atoms in a ring, R1 and R2 independently represent any of hydrogen, an alkyl group with 1 to 4 carbon atoms, or an aryl group with 6 to 13 carbon atoms in a ring, and each of Ar1, Ar2, R1, and R2 may have a substituent and the two substituents may be bonded to each other to form a ring.
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Page/Page column 27
(2009/10/18)
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- ANTHRACENE DERIVATIVE, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC APPLIANCE
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Novel anthracene derivatives are provided. Further, a light-emitting element, a light-emitting device, and an electronic appliance each using the novel anthracene derivative are provided. Anthracene derivatives represented by general formulae (G11) and (G21) are provided. The anthracene derivatives represented by the general formulae (G11) and (G21) each emit blue light with high color purity and have a carrier-transporting property. Therefore, each of the anthracene derivatives represented by the general formulae (G11) and (G21) is suitable for use in a light-emitting element, a light-emitting device, and an electronic appliance.
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Page/Page column 129-130
(2009/12/05)
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- Bipyridine-based compound and organic light emitting diode employing organic layer comprising the same
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The invention is directed to bipyridine-based compounds and organic light emitting diodes (OLED) including organic layers comprising the bipyridine-based compound. OLEDs including organic layers comprising the bipyridine-based compounds have low driving voltages, high current densities, high efficiencies and long lifetimes.
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Page/Page column 17-18
(2009/12/02)
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- IMIDAZOPYRIDINE-BASED COMPOUND AND ORGANIC LIGHT EMITTING DIODE INCLUDING ORGANIC LAYER COMPRISING THE IMIDAZOPYRIDINE-BASED COMPOUND
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Imidazopyridine-based compounds and organic light emitting diodes (OLEDs) including organic layers including the imidazopyridine-based compounds are provided. The organic light emitting diodes including organic layers having the imidazopyridine-based compounds have low driving voltages, high efficiencies, high luminance, long life-times and low power consumption.
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Page/Page column 10-11
(2008/12/05)
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- Imidazopyridine-based compounds and organic light emitting diode including organic layer comprising the imidazopyridine-based compounds
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Imidazopyridine-based compounds of Formula I and organic light emitting diodes (OLEDs) comprising organic layers including the imidazopyridine-based compounds are provided. The organic light emitting diodes including organic layers having the imidazopyridine-based compounds have low driving voltages, high efficiencies, high luminance, long life-times and low power consumption.
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Page/Page column 14-16
(2008/12/05)
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- ANTHRACENE DERIVATIVES, ORGANIC ELECTRONIC DEVICES USING ANTHRACENE DERIVATIVES, AND ELECTRONIC APPARATUSES COMPRISING ORGANIC ELECTRONIC DEVICE
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Disclosed is an anthracene derivative, an organic electronic device using the anthracene derivative, and an electronic apparatus including the organic electronic device. The anthracene derivative is capable of being used as a hole injecting material, a hole transporting material, an electron injecting material, an electron transporting material, and a light emitting material in an organic electronic device including an organic light emitting device. In particular, the anthracene derivative is capable of being used alone as a light emitting material and a host or a dopant in a host/dopant system. The organic electronic device is excellent in views of efficiency, driving voltage, life time, and stability.
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Page/Page column 12-13
(2010/11/30)
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- A NOVEL ANTHRACENE TYPED COMPOUND AND THE ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE USING THE SAME
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The present invention relates to an anthracene compound and an organic electroluminescent display device using the same. Particularly, the present invention relates to an anthracene compound which has good blue light emitting property, transports holes and electrons efficiently to enable an organic electroluminescent display device to have a low voltage, high brightness and long lifetime, and an organic electroluminescent display device using the same.
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Page/Page column 6; 12-13; 45-46; 92-93
(2009/01/20)
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- Anthracene Derivative, and Light Emitting Element, Light Emitting Device, Electronic Device Using Anthracene Derivative
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A novel anthracene derivative represented by General Formula (1) is provided, which enables the production of a light-emitting element with high luminous efficiency and a long lifetime. A high-performance light-emitting device and electronic device in which the anthracene derivative is employed are also disclosed. The anthracene derivative of the present invention is represented by General Formula (1), in which the unit A represents any one of substituents represented by General Formulae (1-1) to (1-3). The variables shown in Formulae (1) and (1-1) to (1-3) are defined in the specification.
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Page/Page column 80-81
(2008/06/13)
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- Imidazopyrimidine-based compound and organic light-emitting device employing organic layer including the same
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lmidazopyrimidine-based compounds represented by Formula and organic light-emitting devices employing organic layers including the imidazopyrimidine-based compounds are provided. Organic light-emitting devices employing organic layers including the imidazopyrimidine-based compounds feature low driving voltages, high efficiency, high brightness, long lifetimes, and low power consumption.
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Page/Page column 11-13
(2008/12/08)
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- ANTHRACENE DERIVATIVE, AND LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE USING ANTHRACENE DERIVATIVE
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An object is to provide a novel anthracene derivative. Another object is to provide a light-emitting element with high luminous efficiency. Yet another object is to provide a light-emitting element with a long lifetime. Still another object is to provide a light-emitting device and an electronic device having a long lifetime by using the light-emitting elements of the present invention. The anthracene derivative represented by General Formula (1) is provided. The ability of the anthracene derivative represented by General Formula (1) to exhibit high luminous efficiency allows the production of a light-emitting element with high luminous efficiency and a long lifetime.
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Page/Page column 130-131
(2008/06/13)
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- ANTHRACENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT USING THE SAME
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This invention provides an anthracene derivative, which has a heteroaryl group containing a nitrogen-containing six-membered ring and has a specific structure and comprises an organic thin film layer having a single or multilayer structure including at least a luminescent layer between a cathode and an anode. At least one of the organic thin film layers contains the anthracene derivative either solely or as a component of a mixture. The organic electroluminescent element can emit homogeneous luminscence for a long period of time and has a prolonged service life. The anthracene derivative can realize the above organic electroluminescent element.
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Page/Page column 52-53
(2008/06/13)
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- NITROGENOUS HETEROCYCLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT EMPLOYING THE SAME
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Provided is a material for an organic EL device realizing an organic EL device capable of having a high current efficiency even at a low voltage. Provided is a derivative of heterocyclic compound having a nitrogen atom represented by the following general formula (A-1) or (A-2). In the formulae, R 1a to R 5a each represent a substituent, Ar 1a to Ar 3a each represent a single bond or a divalent connecting group, and HAr represents a group represented by a general formula (A-3) or (A-4). R 6a to R 10a each represent a substituent.
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Page/Page column 42; 46
(2008/06/13)
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- Efficient one-pot transformation of aminoarenes to haloarenes using halodimethylisulfonium halides generated in situ
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Halodimethylsulfonium halide 1, which is readily formed in situ from hydrohaloic acid and DMSO, is a good nucleophilic halide. This activated nucleophilic halide rapidly converts aryldiazonium salt prepared in situ by the same hydrohaloic acid and nitrite ion to aryl chlorides, bromides, or iodides in good yield. The combined action of nitrite ion and hydrohaloic acid in DMSO is required for the direct transformation of aromatic amines, which results in the production of aryl halides within 1 h. Substituted compounds with electron-donating or -withdrawing groups or sterically hindered aromatic amines are also smoothly transformed to the corresponding aromatic halides. The only observed by-product is the deaminated arene (usually 7%). The isolated aryldiazonium salts can also be converted to the corresponding aryl halides using 1. The present method offers a facile, one-step procedure for transforming aminoarenes to haloarenes and lacks the environmental pollutants that usually accompany the Sandmeyer reaction using copper halides.
- Baik, Woonphil,Luan, Wanqiang,Lee, Hyun Joo,Yoon, Cheol Hun,Koo, Sangho,Kim, Byeong Hyo
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p. 213 - 219
(2007/10/03)
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- NEW MATERIAL FOR TRANSPORTING ELECTRONS AND ORGANIC ELECTROLUMINESCENT DISPLAY USING THE SAME
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Novel materials for electron injection/transportation and emitting layers can greatly improve the stability of an organic electroluminescent display. Electroluminescent displays incorporating these materials produce blue light at low voltage levels. These novel organic materials include compounds in which 1 to 2 imidazole functional groups are introduced in the 2 or 2,6-site of 9,10 substituted anthracene. An organic electroluminescent display with an organic compound layer of these materials has high efficiency, thermal stability, operationally stability and maintains driving voltage before and after operation.
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Paragraph 0045; 0046
(2008/06/13)
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- NEW ORGANIC COMPOUNDS FOR ELECTROLUMINESCENCE AND ORGANIC ELECTROLUMINESCENT DEVICES USING THE SAME
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Disclosed is a novel group of compounds having a general structure of anthracene body substituted with at least one thiophenyl group, which can be further substituted with various substituent groups. These new compounds are generally compatible with organic electroluminescence. Also disclosed are organic electroluminescent devices and method of making the same. The organic electroluminescent devices include at least one of the compounds in various layers thereof. Organic electroluminescent devices employing the new compounds in their light-emitting layers show outstanding stability.
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Page/Page column 70
(2010/02/07)
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- Stereocontrolled synthesis of anthracene β-C-ribosides: Fluorescent probes for photophysical studies of DNA
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Effective, stereocontrolled syntheses of the 1-anthracenyl and 2-anthrancenyl β-C-2′-deoxyribosides are reported and were based on a diastereofacialselective, palladium-catalyzed glycosidation of the corresponding protected (4S,5R)-4-hydroxy-5-(hydroxymethyl)dihydrofuran.
- Coleman, Robert S.,Mortensen, Mark A.
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p. 1215 - 1219
(2007/10/03)
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- BROMINATION OF 2-BENZOYLBENZOIC ACIDS
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A new method was developed for the synthesis of bromine-substituted 9,10-anthraquinones by bromination of 2-benzoylbenzoic acid derivatives in the presence of sulfuric and nitric acids followed by cyclization.
- Popov, S.I.,Kopylova, T.M.,Andrievskii, A.M.,Medvedev, S.V.,Yatsenko, A.V.
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p. 279 - 285
(2007/10/02)
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- Process for the preparation of bromoanthraquinones
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A process for the preparation of pure bromoanthraquinones by denitrobrominating corresponding nitroanthraquinones is described. The process comprises treating nitroanthraquinones of the formula I STR1 wherein X is hydroxy, mercapto, carboxy or halogen and
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- Triazinyl dyes
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Vat dyestuffs of the formula EQU1 wherein R represents alkyl with 1 to 4 carbon atoms, R1 and R2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A1 and A2 represents a vattable radical with 3 to 7 condensed rings are characterized by improved resistance to alkali and are suitable for dyeing and printing the most diverse materials, in particular fibers made from natural or regenerated cellulose.
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