- (1-Naphthyl)phenylamino functionalized three-coordinate organoboron compounds: Syntheses, structures, and applications in OLEDs
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New three-coordinate organoboron compounds functionalized by a (1-naphthyl)phenylamino group, B(mes)2(dbp-NPB) (1), B(db-NPB) 3 (2), and B(dbp-NPB)3 (3), have been synthesized. A variable temperature 1H NMR study showed that the aryl groups around the boron center in these compounds have a rotation barrier ~70 kJ mol -1. The new boron compounds are amorphous solids with Tg being 110°C, 171°C and 173°C, respectively. The electronic properties of the new boron compounds were investigated by cyclic voltammetry and UV-visible spectroscopy. All three boron compounds are blue emitters in the solid state. In solution the emission spectra of the boron compounds shift toward a longer wavelength with increasing solvent polarity. In CH 2Cl2, the emission quantum efficiency of the three compounds was determined to be 0.22, 0.27 and 0.23, respectively. Several series of electroluminescent (EL) devices where compounds 1-3 are used as either an emitter/electron transport material, a hole transport material, or a hole injection material have been fabricated and their performance has been compared to the corresponding devices of BNPB, a previously investigated molecule, NPB, a commonly used hole transport material, and CuPc, a commonly used hole injection material. The EL results indicate that the new boron compounds are not suitable as emitters/electron transport materials, but they are promising as hole transport and hole injection materials in EL devices. The Royal Society of Chemistry 2005.
- Jia, Wen Li,Moran, Mark J.,Yuan, Yan-Yan,Lu, Zheng Hong,Wang, Suning
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- NOVEL PYRENE COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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The present invention relates to a novel pyrene-based compound and to an organic electroluminescent device comprising the same, and more specifically, the pyrene-based compound according to the present invention is employed as the light emitting material for the organic electroluminescence device to have excellent life characteristics, and at the same time, can provide a high-efficiency organic electroluminescent device capable of emitting high-luminance blue light, thereby being expected to be useful for full color displays.(2) Substrate(3) Positive electrode(4) Novel hole injection and transport layer(5) Fluorescence emission layer(6) Electron injection and transport layer(7) Negative electrodeCOPYRIGHT KIPO 2018
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Paragraph 0114-0117
(2018/12/01)
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- A kind of organic electroluminescent compound
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The invention discloses an organic electroluminescence compound with the structure represented by formula (I). The organic electroluminescence compound has the advantages of good thermal stability high luminescence efficiency and high luminescence purity, can be used for making organic electroluminescence devices, and can be applied in the fields of organic solar cells, organic thin film transistors or organic photoreceptors.
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- COMPOUND FOR ORGANIC ELECTRIC ELEMENT, ORGANIC ELECTRIC ELEMENT COMPRISING THE SAME AND ELECTRONIC DEVICE THEREOF
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The present invention refers to formula 1 a fullerene derivative is denoted by chemical. under public affairs number. In addition, electrode number 1, number 2 electrode and said number 1 electrode and organic including organic layer between the number 2
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Paragraph 0205; 0210; 0213
(2017/01/26)
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- Structural engineering of dipolar organic dyes with an electron-deficient diphenylquinoxaline moiety for efficient dye-sensitized solar cells
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A series of new organic dyes containing an electron-deficient diphenylquinoxaline moiety was synthesized and employed as the photosensitizers in dye-sensitized solar cells (DSSCs). The multiple phenyl rings in the peripheral positions of the dye structure provide a hydrophobic barrier to slow down the charge recombination. The photophysical and electrochemical properties of these dyes were investigated in detail. The cell performance and the associated photophysical and electrochemical properties can be easily tuned by the modification of the aromatic fragments within the π spacer. Dye CR204-based DSSC reached the best energy conversion efficiency of 6.49% with an open-circuit voltage of 666 mV, a short-circuit photocurrent density of 14.9 mA cm-2, and a fill factor of 0.66. The IPCE of CR204-based DSSC covers the light-harvesting to NIR region.
- Li, Sie-Rong,Lee, Chuan-Pei,Liao, Chia-Wei,Su, Wei-Lin,Li, Chun-Ting,Ho, Kuo-Chuan,Sun, Shih-Sheng
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p. 6276 - 6284
(2015/03/30)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE ELEMENT USING SAME
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An aromatic amine derivative represented by formula (1): wherein L1, L2, Ar1, Ar2, R1, R2, a, b, and Q are as defined in the specification. An organic electroluminescence device having at least one organic thin film layer which includes the aromatic amine derivative has high emission efficiency and long lifetime.
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Paragraph 0190
(2014/08/19)
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- Novel hole transport materials based on N,N′-disubstituted-dihydrophenazine derivatives for electroluminescent diodes
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A series of novel hole transport materials for organic light-emitting diodes (OLEDs) based on 9,14-diphenyl- 9,14-dihydrodibenzo[a,c]phenazine were synthesized and characterized by 1H NMR and 13C NMR, mass spectrometry and single crystal structure analysis methodologies. The crystal structures of three selected molecules reveal large dihedral angles between different functional units. The electro-optical properties of the materials were examined by UV-vis absorption, photoluminescence spectroscopy and cyclic voltammetry. The HOMO of the materials were between 4.83-5.08 eV, indicating a good match between the HOMO of indium tin oxide (ITO) and the HOMO of light-emitting layer, which renders the promising candidates as hole transport materials for organic light-emitting devices. In terms of the device with the structure of ITO/HTM (60 nm)/Alq3 (50 nm)/LiF (1 nm)/Al (200 nm), the device b using N,N-diphenyl-4′ -(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-[1,1′ -biphenyl]-4-amine presented a maximum luminance of 17 437 cd m-2 at 10.7 V and kept a high current efficiency (the maximum current efficiency is 2.25 cd A-1) at a high current density (>500 mA cm-2), which illustrates the exploited material possesses good hole transport and stable properties.
- Zheng, Zhiwen,Dong, Qingchen,Gou, Liao,Su, Jian-Hua,Huang, Jinhai
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p. 9858 - 9865
(2015/02/02)
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- AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING SAME
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An aromatic amine derivative represented by the following formula (1), wherein at least one of Ar1 to Ar3 is represented by the following formula (2), wherein X1 to X3 are independently a nitrogen atom or CR2, provided that two of X1 to X3 are a nitrogen atom and X1 and X3 are not simultaneously a nitrogen atom.
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Paragraph 0103; 0104
(2013/05/22)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT USING THE SAME
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An aromatic amine derivative with a specific structure having a carbazole skeleton to which a diarylamino group bonds via a bonding group. An organic electroluminescence device which is composed of one or more organic thin film layers including at least one light emitting layer sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers contains the aromatic amine derivative singly or as its mixture component. Organic electroluminescence devices with enhanced efficiency of light emission and a compound realizing the devices are provided.
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Page/Page column 40
(2009/08/16)
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- ARYL AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME
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Disclosed are a novel aryl amine derivative and an organic electroluminescent device using the same. More specially, the aryl amine derivative is a compound comprising a tetrahydropyrene core, amine groups (-NAr1Ar2 and -NAr3Ar4) each independently substituted at 2 and 7 positions of the tetrahydropyrene, and aromatic ring groups (X1 and X2) each independently substituted or unsubstituted between the tetrahydropyrene core and the amine groups (-NAr1Ar2 and -NAr3Ar4). Further, provided is an organic electroluminescent device comprising (i) an anode, (ii) a cathode, and (iii) one or more organic layers between the anode and the cathode, at least one of the one or more organic layers comprising the aryl amine derivative. Preferably, the organic layer comprising the aryl amine derivative is a hole transport layer.
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Page/Page column 27-28
(2009/07/25)
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- AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
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Disclosed is an organic electroluminescent device wherein an organic thin film which is composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Since at least one layer of the organic thin film contains a novel aromatic amine derivative, which has an asymmetric structure wherein two different amine units are bonded through a linking group, by itself or as a component of a mixture, molecules are hardly crystallized, thereby improving the production yield of the organic electroluminescent device. This organic electroluminescent device has a long life.
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Page/Page column 72-73
(2008/06/13)
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- Organoboron luminescent compounds and methods of making and using same
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The invention provides three-coordinated organoboron compounds that are useful for photoluminescence and electroluminescence. Compounds of the invention include light emitters, preferably emitting intense blue light, electron transporters, hole transporters and hole injectors. A particularly preferred such compound is p-(1-naphthylphenylamino)-4,4′-biphenyldimesitylborane (BNPB), which demonstrates all of these properties. The invention further provides methods of synthesizing such three-coordinated boron compounds, methods of producing photoluminescence and electroluminescence, methods for charge transports, methods for hole injection, methods of applying the compounds in thin films, and uses of the compounds of the invention in luminescent probes, and electroluminescent displays.
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Page/Page column 24
(2010/10/19)
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- Novel 2,1,3-benzothiadiazole-based red-fluorescent dyes with enhanced two-photon absorption cross-sections
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This paper reports the two-photon absorbing and orange-red fluorescence emitting properties of a series of new 2,1,3-benzothiadiazole (BTD)-based D-π-A-π-D-type and star-burst-type fluorescent dyes. In the D-π-A-π-D-type dyes 1-6, a central BTD core was connected with two terminal N,N-disubstituted amino groups via various.π-conjugated spacers. The star-burst-type dyes 8 and 10 have a three-branched structure composed of a central core (benzene core in 8 and triphenylamine core in 10) and three triphenylamine-containing BTD branches. All the BTD-based dyes displayed intense orange-red color fluorescence in a region of 550-689 nm, which was obtained by single-photonexcitation with good fluorescent quantum yield up to 0.98 as well as by two-photon excitation. Large two-photon absorption (TPA) cross-sections (110-800 GM) of these BID dyes were evaluated by open aperture Z-scan technique with a femtosecond Ti/sapphire laser. The TPA cross-sections of D-π-A-π-D-type dyes 2-6 with a benzene, thiophene, ethene, ethyne, and styrene moiety, respectively, as an additional π-conjugated spacer are about 1.5-2.5 times larger than that of 1c with only a benzene spacer. The TPA cross-sec- lions significantly increased in three-branched star-burst-type BTDs 8 (780 GM) with a benzene core and 10 (800 GM) with a triphenylamine core, which are about 3-5 times larger than those of the corresponding one-dimensional sub-units 9 (170 GM) and 11 (230 GM). respectively. The ratios of σ/ eπ between three-branched and one-dimensional dyes were 6.5:3.8 (for 8 and 9) and 6.0:4.0 (for 10 and 11). which are larger than those predicted simply on the basis of the chromophore number density (1:1). according to a cooperative enhancement of the two-photon absorbing nature in the three-branched system.
- Kato, Shin-Ichiro,Matsumoto, Taisuke,Shigeiwa, Motoyuki,Gorohmaru, Hideki,Maeda, Shuuichi,Ishi-i, Tsutomu,Mataka, Shuntaro
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p. 2303 - 2317
(2008/02/03)
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