- Highly efficient deep-blue OLEDs based on hybridized local and charge-transfer emitters bearing pyrene as the structural unit
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A new family of hybridized local and charge-transfer (HLCT) emitters bearing a pyrene structural unit has been developed. Deep-blue OLEDs based on them achieved high brightness over 10000 cd m-2, high maximum external quantum efficiency over 10.5%, and high maximum exciton utilization efficiency approaching 100%, with CIE coordinates of (0.152, 0.065).
- Fu, Caixia,Luo, Shuai,Li, Zhenzhen,Ai, Xin,Pang, Zhenguo,Li, Chuan,Chen, Kuan,Zhou, Liang,Li, Feng,Huang, Yan,Lu, Zhiyun
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Read Online
- AIEgen with Fluorescence–Phosphorescence Dual Mechanoluminescence at Room Temperature
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We report the first example of an AIEgen (DPP-BO) with fluorescence–phosphorescence dual emission under mechanical stimulation. By carefully analyzing the crystal structure of DPP-BO, the efficient intermolecular and intramolecular interactions should account for its unique mechanoluminescence (ML) properties, especially the abnormal phosphorescence, as further confirmed by controlled experiments and theoretical calculations for the presence of ISC transitions. These results provide important information for understanding the complex ML process, possibly opening up a new way to study the inherent mechanism of ML by broadening the application of AIEgens.
- Yang, Jie,Ren, Zichun,Xie, Zongliang,Liu, Yingjie,Wang, Can,Xie, Yujun,Peng, Qian,Xu, Bin,Tian, Wenjing,Zhang, Fan,Chi, Zhenguo,Li, Qianqian,Li, Zhen
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Read Online
- Organic compound based on triazine and anthrone structure, and applications thereof
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The invention relates to an organic compound based on a triazine and anthrone structure, and applications in OLED devices. The compound has high glass transition temperature and high molecular thermalstability, and is low in absorption in the field of vis
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Paragraph 0110; 0144; 0145
(2020/03/23)
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- Organic compound based on triazine and benzimidazolone structures and application of organic compound in organic electroluminescent device
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The invention relates to an organic compound based on triazine and benzimidazolone structures and an application of the organic compound in an organic electroluminescent device. The structure of the compound simultaneously contains the triazine and benzimidazolone structures, and the compound has high glass transition temperature and molecular thermal stability; the compound is low in absorption and high in refractive index in the field of visible light, and after the compound is applied to a covering layer of an OLED device, the light extraction efficiency of the OLED device can be effectively improved; the compound disclosed by the invention also has a relatively deep HOMO energy level and high electron mobility, can be used as a hole blocking or electron transport layer material of theOLED device, and can effectively block holes or energy from being transmitted from a light emitting layer to one side of an electron layer, thereby improving the recombination efficiency of the holesand electrons in the light emitting layer, improving the light emitting efficiency of the OLED device, and prolonging the service life of the OLED device.
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Paragraph 0143; 0155-0156
(2020/04/17)
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- Organic compound based on pyridine and benzoxadiazole and application of the compound
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The invention discloses an organic compound based on pyridine and benzoxadiazole and an application of the compound and belongs to the technical field of semiconductors, wherein the compound has the structure of the general formula (I). The invention also
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Paragraph 0114-0116
(2020/03/17)
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- COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME
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The present invention provides a compound represented by chemical formula and an organic light emitting device comprising the same. The organic light emitting device comprising the compound has excellent electrochemical and thermal stability, thereby having excellent lifespan characteristics.COPYRIGHT KIPO 2020
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Paragraph 0139-0142
(2019/11/21)
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- Highly efficient pyrene blue emitters for OLEDs based on substitution position effect
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To investigate the effect of substitution position of the side group on a pyrene core, three derivatives having a triphenylbenzene group as a bulky side group at the 1,6-position, 4,9-position, and 1,8-position were successfully synthesized: 1,6-bis(5′-phenyl-[1,1':3′,1″-terphenyl]-4-yl)pyrene (1,6-DTBP), 4,9-bis(5′-phenyl-[1,1':3′,1″-terphenyl]-4-yl)pyrene (4,9-DTBP), and 1,8-bis(5′-phenyl-[1,1':3′,1″-terphenyl]-4-yl)pyrene (1,8-DTBP). The three synthesized materials showed excellent thermal stability with a high Tg of >140 °C and a high Td of >500 °C. Due to the highly twisted structure of 1,8-DTBP in the film state, the absolute photoluminescence quantum yield value was improved. Of the three synthesized materials used as an emitter in a non-doped organic light-emitting diode device, 1,8-DTBP showed highly efficient electroluminescence performance, with a luminance efficiency of 6.89 cd/A, power efficiency of 3.03 lm/W, and external quantum efficiency of 7.10% at 10 mA/cm2. In addition, 4,9-DTBP showed a deep-blue emission of CIE x, y (0.158, 0.063) suitable for HD-TV.
- Jung, Mina,Lee, Jaehyun,Jung, Hyocheol,Kang, Seokwoo,Wakamiya, Atsushi,Park, Jongwook
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- COMPOUNDS FOR ORGANIC OPTOELECTRONIC DEVICE AND ORGANIC OPTOELECTRONIC DEVICE INCLUDING THE SAME
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A compound for an organic optoelectronic device represented by Chemical Formula 1 and an organic optoelectronic device including the same are provided. In Chemical Formula 1, R1 to R5 are independently hydrogen, deuterium, —NH2, a substituted or unsubstit
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Paragraph 0072
(2018/02/22)
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- Synthesis and electroluminescence properties of new dual-core derivatives
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New blue emitting materials based on dual core concept, TP-AF-TP and TP-HAF-TP were synthesized through boronylation and Suzuki coupling reactions. In the thin film state, TP-AF-TP and TP-HAF-TP exhibited maximum PL values at 445 and 440 nm, respectively. A non-doped OLED device based on TP-AF-TP and TP-HAF-TP showed current efficiency of 3.16 and 2.67 cd/A, respectively. TP-AF-TP exhibited a higher EL efficiency than that of TP-HAF-TP.
- Lee, Hayoon,Lee, Sunmi,Jung, Hyocheol,Kang, Seokwoo,Park, Jongwook
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p. 2166 - 2170
(2018/01/12)
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- Three-Dimensional Structures Based on the Fusion of Chrysene and Spirobifluorene Chromophores for the Development of Blue OLEDs
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A new deep-blue chromophore containing a three-dimensionally (3D) shaped CS core composed of fused chrysene and spirofluorene units is synthesized. A pair of m-terphenyl (TP) units is also substituted onto the CS core at two different sets of positions to
- Lee, Hayoon,Jung, Hyocheol,Kang, Seokwoo,Heo, Jin Hyuck,Im, Sang Hyuk,Park, Jongwook
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p. 2640 - 2646
(2018/03/09)
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- Naphtho-fluorene carbazole compound and application thereof
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The invention belongs to the field of organic electroluminescence, and in particular relates to a naphtho-fluorene carbazole compound and application thereof. An OLED device manufactured by taking thesynthesized organic compound as a main body light-emitting material can be applied in the fields of AM drive OLED display, PM drive OLED display or OLED illumination. The external quantum efficiency,the power efficiency and the current efficiency of the device are greatly improved, and the service life of the device is obviously prolonged, so that the naphtho-fluorene carbazole compound has thegood market prospect.
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Paragraph 0119; 0122-0124
(2018/03/26)
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- DIARYLFLUORENE AMINE DERIVATIVE ORGANIC COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE INCLUDING THE SAME
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Provided is a diarylfluorene amine derivative organic compound represented by formula a. In formula a, R^1, R^2, R^3, R^4, R^5, R, n, Ar, X and L are as defined above. An embodiment of the present invention provides a novel diarylfluorene amine derivative organic compound having proper energy levels, electrochemical stability, and thermal stability.COPYRIGHT KIPO 2018
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Paragraph 0059-0062
(2018/09/15)
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- FLUORENYL TRIAZINE DERIVATIVE ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE INCLUDING THE SAME
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Provided is an organic compound, represented by the following chemical formula a. In the formula, R_1 to R_4, L, Ar_1, and Ar_2 are the same as in the previously explained definition.COPYRIGHT KIPO 2018
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Paragraph 0131-0135
(2018/05/15)
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- Highly efficient dual anthracene core derivatives through optimizing side groups for blue emission
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TP-AA-TPB, TP-AA-TPB, TPB-AA-TPB, TP-AA-DPA, TP-AA-TPA, and TPB-AA-TPA were synthesized using a 9,9'-bianthracene (AA core). Through a systematic side group change, we optimized the dual-core chromophore system and investigated the relationship between the core and the side groups. The ultraviolet-visible (UV-Vis) absorption of the six materials showed an intrinsic absorption peaks of anthracene in the range of 360 nm–410 nm and photoluminescence (PL) emission in the blue region. The minimum decomposition temperatures (Td) was 425 °C, the minimum melting temperatures (Tm) was 335 °C, and the minimum glass transition temperatures (Tg) was 176 °C. We achieved excellent overall electroluminescence (EL) efficiency in non-doped OLED devices using the six synthesized materials as emitting layer (EML). TPB-AA-TPA synthesized through size and polarity optimization of the side groups on the AA core had a current efficiency of 8.97 cd/A, power efficiency of 4.43 lm/W, external quantum efficiency (EQE) of 6.37%, and Commission Internationale de L'Eclairage coordinates (CIE) of (0.14, 0.19). TPB-AA-TPA also maintained blue emission and realized the highest EL efficiency among the six synthesized materials.
- Lee, Hayoon,Jo, Minjin,Yang, Garam,Jung, Hyocheol,Kang, Seokwoo,Park, Jongwook
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- ORGANIC OPTOELECTRONIC DEVICE AND DISPLAY APPARATUS
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The present invention relates to an organic optoelectronic device and a display apparatus comprising same, the organic optoelectronic device comprising: an anode and a cathode facing each other; a light-emitting layer located between the anode and cathode; a hole transport layer located between the anode and light-emitting layer; an auxiliary hole transport layer located between the hole transport layer and light-emitting layer; an electron transport layer located between the cathode and light-emitting layer; and an auxiliary electron transport layer between the electron transport layer and light-emitting layer, wherein the auxiliary electron transport layer comprises at least one type of a first compound expressed by a particular Chemical Formula, and the auxiliary hole transport layer comprises at least one type of a second compound expressed by a particular Chemical Formula.
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- Synthesis and physical properties of new pyrene derivative with bulky side groups for blue emission
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Organic light-emitting diodes (OLEDs) have attracted much attention from academia and industry field because of their various applications such as large area flat-panel displays and lightings. We designed and synthesized new pyrene derivative with 1,6-bis(3',5'-diphenylbiphenyl-4-yl)pyrene (1,6-DTBP) which has bulky side group for intra-twisted structure and blue emission. In solution state, 1,6-DTBP exhibited absorption maximum value of 365 nm and photoluminescence (PL) maximum value of 425 nm. In film state, 1,6-DTBP exhibited absorption maximum value of 373 nm and PL maximum value of 461 nm without excimer band. 1,6-DTBP can be applicable to OLED emitter as a blue emission.
- Jung, Mina,Lee, Jaehyun,Jung, Hyocheol,Park, Jongwook
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p. 8796 - 8799
(2016/07/27)
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- Highly efficient emitters of ultra-deep-blue light made from chrysene chromophores
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Chrysene, which has a wide band gap, was selected as an emission core to develop and study new materials that emit ultra-deep-blue light with high efficiency. Six compounds introducing various side groups were designed and synthesized: 6,12-bis(3′,5′-diph
- Shin, Hwangyu,Jung, Hyocheol,Kim, Beomjin,Lee, Jaehyun,Moon, Jiwon,Kim, Joonghan,Park, Jongwook
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supporting information
p. 3833 - 3842
(2016/05/24)
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- ORGANIC COMPOUND INCLUDING FUSED CORE MOIETY, ORGANIC OPTOELECTRIC DEVICE INCLUDING THE SAME AND DISPLAY
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The present invention relates to: an organic compound represented by a combination of chemical formula 1 and chemical formula 2; and an organic optoelectronic device and a display device comprising the organic compound. In chemical formulas, R1 to R5, R9 to R14, X, m and n are the same as described in the specification. Good electrical properties, light emitting properties, color properties, and the like can be obtained by employing the organic compound to the organic optoelectronic device.COPYRIGHT KIPO 2016
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Paragraph 0425; 0430; 0431
(2017/01/05)
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- COMPOUND, ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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The present invention relates to: a compound represented by chemical formula 1; an organic optoelectronic diode containing the same; and a display device containing the organic optoelectronic diode. The description of chemical formula 1 is the same as that which was defined in the specification.
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Paragraph 0229-0232
(2016/11/17)
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- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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The present invention provides a novel compound capable of improving light-emitting efficiency of an element, stability, and lifespan, an organic electronic element using the same, and an electronic device thereof, wherein the compound is represented by chemical formula 1.(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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- New polycarbazole deriv., host material consisting of the same and an organic electroluminescence element including the same
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PROBLEM TO BE SOLVED: To provide a new carbazole derivative, a host material composed thereof, and an organic electroluminescent device containing the same. SOLUTION: The carbazole derivative is represented by formula (1) (wherein Ar1is a g
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- ORGANIC COMPOUND AND COMPOSITION AND ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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The present invention relates to an organic compound represented by chemical formula 1 and having a molecular weight of 750 or less, to a composition for an organic optoelectronic device containing the organic compound, to an organic optoelectronic device using the organic compound or the composition and to a display device comprising the organic optoelectronic device. In chemical formula 1, Z, L, R^1 or R^8 and n1 and n2 are the same as defined in the specification.COPYRIGHT KIPO 2016
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Paragraph 0204-0206
(2016/10/10)
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- Effect of the length of side group substitution on optical and electroluminescene properties
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Blue emitting materials, 9,10-bis-biphenyl-4-yl-anthracene (AC-P), 9,10-bis-[1,1';4',1'']terphenyl-4-yl-anthracene (AC-DP), and 9,10-bis[3'',5''-deiphenyltriphenyl-4'-yl]anthracene (AC-TP) were synthesized through boration and Suzuki aryl-aryl coupling re
- Shin, Hwangyu,Kang, Hyeonmi,Kim, Beomjin,Park, Youngil,Yu, Young-Jun,Park, Jongwook
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p. 3041 - 3046
(2014/12/11)
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- ELECTRONIC DEVICE INCLUDING A PYRIMIDINE COMPOUND
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There is provided a compound having Formula I or Formula II In Formula I: R1-R4 are the same or different and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least two of R1-R4 are aryl groups and at least one aryl group includes an N,O,S-heterocycle. When two of R1-R4 include N-carbazolyl groups, two of R1-R4 are not aryl; In Formula II: Q is a single bond or a hydrocarbon aryl; and R5 and R6 are the same or different at each occurrence and are H, D, alkyl, silyl, alkoxy, cyano or aryl. At least one of R5 and at least one of R6 are an aryl group. At least one aryl group includes an N,O,S-heterocycle.
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Page/Page column 55-56
(2012/07/13)
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- ORGANIC SULFUR COMPOUND, PROCESS FOR PRODUCTION OF THE SAME, AND ORGANIC ELECTROLUMINESCENCE ELEMENT UTILIZING THE SAME
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Disclosed is an organic sulfur compound represented by general formula (a1) [wherein, A represents -S-, -S(O)- or -S(O)2-; Z1 and Z4 independently represent a trivalent aromatic hydrocarbon group, or the like; Z2 and Z3 independently represent a bivalent aromatic hydrocarbon group, or the like; Ar1, Ar2, Ar3 and Ar4 independently represent an aromatic hydrocarbon group, or the like; and n represents a number of 0 or 1] or general formula (b1) [wherein A is as defined above; Z5 represents a trivalent aromatic hydrocarbon group, or the like; Ar represents an aromatic hydrocarbon group having a valency of m, or the like, Ar1 and Ar2 are as defined above; and m represents a number of 2 of 3]. The compound is useful as an electron transport material, a hole blocking material or a host material for an organic electroluminescence element.
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- Novel star-shaped host materials for highly efficient solution-processed phosphorescent organic light-emitting diodes
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Two novel star-shaped host materials for solution processed blue phosphorescent organic light-emitting devices, 9-(5′,5?-diphenyl[1, 1′:3′,1″:3″,1?:3?,1-quinquephenyl] -5″-diyl)-9H-carbazole (DQC) and 9,9′-(5′-phenyl[1,1′: 3′,1″-terphenyl]-3,5-diyl)bis-9H-carbazole (PTC), were synthesized by the Suzuki coupling reaction. These compounds both exhibited high glass-transition temperatures (Tg ≥ 128 °C) and excellent film-forming ability. The nonplanar star-shaped configuration of DQC and PTC limited the effective extension of their π-conjugation, leading to the same triplet energy of 2.81 eV. The solution processed single layer devices using DQC and PTC as the host for the phosphorescence emitter iridium(iii) bis(4,6-difluorophenylpyridinato)-picolinate (FIrpic) showed the maximum luminance efficiencies of 9.2 and 12.8 cd A-1, respectively. By introducing a thin 1,3,5-tris(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBI) electron-transporting and exciton-confining layer, the maximum efficiencies of the solution processed devices based on DQC and PTC were further improved to 21.7 and 25.7 cd A-1 with the maximum external quantum efficiencies up to 9.2% and 11.9%, respectively. Furthermore, the DQC- and PTC-based devices showed significantly high performance compared with the corresponding devices based on 1,3-bis(9-carbazolyl)benzene (mCP).
- Jiang, Wei,Duan, Lian,Qiao, Juan,Zhang, Deqiang,Dong, Guifang,Wang, Liduo,Qiu, Yong
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experimental part
p. 6131 - 6137
(2011/08/06)
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- SINGLE TRIPHENYLENE CHROMOPHORES IN PHOSPHORESCENT LIGHT EMITTING DIODES
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Novel triphenylene compounds are provided. Specific examples include multi-aryl-substituted triphenylenes. A preferred group of compounds are triphenylenes that are substituted with a non-fused aryl group having one or more meta-substituents, where each meta-substituent is a non-fused aryl group optionally substituted with further substituents selected from the group consisting of non-fused aryl groups and alkyl groups. A further preferred group of compounds are triphenylenes that are substituted with a non-fused heteroaryl group having one or more meta-substituents, where each meta-substituent is a non-fused aryl or heteroaryl group optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups. Some high triplet energy analogs are expected to work with deep blue phosphorescent dopants. The compounds may be useful in phosphorescent organic light emitting devices. Also provided is an organic electroluminescent device comprising an anode, a cathode, and an emissive layer between the anode and the cathode, the emissive layer comprising a phosphorescent material and a compound having a repeat unit, the repeat unit containing a triphenylene moiety.
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Page/Page column 35
(2009/04/25)
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- Exceedingly efficient deep-blue electroluminescence from new anthracenes obtained using rational molecular design
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9,10-Bis(3′,5′-diphenylphenyl)anthracene [MAM], 9-(3′,5′-diphenylphenyl)-10-(3?,5?-diphenylbiphenyl- 4″-yl)anthracene [MAT], and 9,10-bis(3″,5″-diphenylbiphenyl- 4′-yl)anthracene [TAT] were newly synthesized through boration and Suzuki aryl-aryl coupling
- Kim, Soo-Kang,Yang, Bing,Ma, Yuguang,Lee, Ji-Hoon,Park, Jong-Wook
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experimental part
p. 3376 - 3384
(2010/02/28)
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