151
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Tian G, Jiang Y, Wu P, Huang J, Zou Q, Wang Q, Mu H, Su J. Pure hydrocarbon host materials based on spirofluorene with excellent performances for green phosphorescent light-emitting devices. NEW J CHEM 2016. [DOI: 10.1039/c6nj01872f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Four novel pure hydrocarbon spirofluorene-based compounds were fully investigated for green electrophosphorescent devices.
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Affiliation(s)
- Guojian Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yongxin Jiang
- Department of Physics
- School of Science
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Panpan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Jinhai Huang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Qi Zou
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power
- Shanghai University of Electric Power
- Shanghai 200090
- P. R. China
| | - Qiaochun Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Haichuan Mu
- Department of Physics
- School of Science
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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152
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Varathan E, Vijay D, Subramanian V. Quantum chemical design of carbazole- and pyridoindole-based ambipolar host materials for blue phosphorescent OLEDs. RSC Adv 2016. [DOI: 10.1039/c6ra15748c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structure–property relationship of carbazole- and pyridoindole-type host materials for blue PhOLEDs using quantum chemical calculations.
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Affiliation(s)
- E. Varathan
- Chemical Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dolly Vijay
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - V. Subramanian
- Chemical Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
- Academy of Scientific and Innovative Research (AcSIR)
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153
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Aydemir M, Haykır G, Türksoy F, Gümüş S, Dias FB, Monkman AP. Synthesis and investigation of intra-molecular charge transfer state properties of novel donor-acceptor-donor pyridine derivatives: the effects of temperature and environment on molecular configurations and the origin of delayed fluorescence. Phys Chem Chem Phys 2015; 17:25572-82. [PMID: 26372605 DOI: 10.1039/c5cp03937a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A novel series of donor-acceptor-donor (D-A-D) structured pyridine derivatives were synthesised and detailed photo-physical investigations were made using mainly steady-state and time-resolved spectroscopy techniques at varying temperatures. The investigations showed that the molecules have solvent polarity and temperature dependent excited-state configurations, confirmed in two different polarity solvents (295-90 K), i.e. methyl cyclohexane (MCH) and 2-methyltetrahdrofurane (2-MeTHF). In MCH, the investigations revealed dual fluorescence over the temperature range of 295-90 K. At 295 K, the ground-state configuration of the molecules has a partially twisted geometry as determined by DFT calculation, yet the emission originates totally from a locally excited (LE) state, however once the temperature is lowered to 90 K, the twisted molecular configuration is stabilised, and the emission originates from a fully-relaxed intramolecular charge transfer state (ICT), this is contrary to the systems where structural reorganisation stabilises ICT and this is frozen out at low temperatures. The DFT calculations revealed different ground state molecular configurations due to the presence of different electron-donating groups, e.g. the molecule including anthracene groups has a near 90° twisted geometry whereas the triphenylamine including molecule has a pyramidal geometrical folding, therefore, the decrease in temperature restricts the donor degree of rotational freedom. In 2-MeTHF solution, the fluorescence spectrum of both molecules is always of ICT character, but gradually red-shifts through the fluid to glass transition temperature (∼135 K), in this case, the fluorescence occurs after structural and solvent-shell relaxations, however, upon cooling below 135 K, the spectra dramatically shift back to blue giving rise to strong emission from an ICT excited-state (but not the LE state) where the molecules have unrelaxed geometries. This significant change in the nature of the emitting species was explained with specific solvent-solute dynamic interactions in the vicinity of the solvation shell and the effect of thermal excitation of molecular vibrational modes of the C-C bond linking donor and acceptor units. Finally, we confirmed that the molecules have ICT ground-state geometry in the solid-state phase (spin-coated films), and the time-resolved decay dynamics were investigated comparing the spin-coated films (at RT and 25 K) and MCH solutions (at 295 K and 90 K).
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Affiliation(s)
- Murat Aydemir
- Institute of Photonic Materials, University of Durham, South Road, DH1 5US, UK.
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154
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Miyamoto F, Nakatsuka S, Yamada K, Nakayama KI, Hatakeyama T. Synthesis of Boron-Doped Polycyclic Aromatic Hydrocarbons by Tandem Intramolecular Electrophilic Arene Borylation. Org Lett 2015; 17:6158-61. [DOI: 10.1021/acs.orglett.5b03167] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fumiya Miyamoto
- School
of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo 669-1337, Japan
| | - Soichiro Nakatsuka
- School
of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo 669-1337, Japan
| | - Keitaro Yamada
- Graduate
School of Science and Engineering, Yamagata University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Ken-ichi Nakayama
- Graduate
School of Science and Engineering, Yamagata University, 4-3-16, Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Takuji Hatakeyama
- School
of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda, Hyogo 669-1337, Japan
- Elements
Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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155
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Feng X, Tomiyasu H, Hu JY, Wei X, Redshaw C, Elsegood MRJ, Horsburgh L, Teat SJ, Yamato T. Regioselective Substitution at the 1,3- and 6,8-Positions of Pyrene for the Construction of Small Dipolar Molecules. J Org Chem 2015; 80:10973-8. [PMID: 26436921 DOI: 10.1021/acs.joc.5b02128] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This article presents a novel asymmetrical functionalization strategy for the construction of dipolar molecules via efficient regioselective functionalization along the Z-axis of pyrene at both the 1,3- and 6,8-positions. Three asymmetrically substituted 1,3-diphenyl-6,8-R-disubsituted pyrenes were fully characterized by X-ray crystallography, photophysical properties, electrochemistry, and density functional theory calculations.
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Affiliation(s)
- Xing Feng
- Beijing Institute of Graphic Communication , Beijing 102600, P. R. China.,Department of Applied Chemistry, Faculty of Science and Engineering, Saga University , Honjo-machi 1, Saga 840-8502, Japan
| | - Hirotsugu Tomiyasu
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University , Honjo-machi 1, Saga 840-8502, Japan
| | - Jian-Yong Hu
- School of Materials Science and Engineering, Shannxi Normal University , Xi'an, 710062 Shannxi, P. R. China
| | - Xianfu Wei
- Beijing Institute of Graphic Communication , Beijing 102600, P. R. China
| | - Carl Redshaw
- Department of Chemistry, The University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
| | - Mark R J Elsegood
- Chemistry Department, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Lynne Horsburgh
- Chemistry Department, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Simon J Teat
- Advanced Light Source, Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Takehiko Yamato
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University , Honjo-machi 1, Saga 840-8502, Japan
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156
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Hirai H, Nakajima K, Nakatsuka S, Shiren K, Ni J, Nomura S, Ikuta T, Hatakeyama T. One-Step Borylation of 1,3-Diaryloxybenzenes Towards Efficient Materials for Organic Light-Emitting Diodes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506335] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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157
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Hirai H, Nakajima K, Nakatsuka S, Shiren K, Ni J, Nomura S, Ikuta T, Hatakeyama T. One-Step Borylation of 1,3-Diaryloxybenzenes Towards Efficient Materials for Organic Light-Emitting Diodes. Angew Chem Int Ed Engl 2015; 54:13581-5. [PMID: 26380959 DOI: 10.1002/anie.201506335] [Citation(s) in RCA: 206] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/07/2015] [Indexed: 11/07/2022]
Abstract
The development of a one-step borylation of 1,3-diaryloxybenzenes, yielding novel boron-containing polycyclic aromatic compounds, is reported. The resulting boron-containing compounds possess high singlet-triplet excitation energies as a result of localized frontier molecular orbitals induced by boron and oxygen. Using these compounds as a host material, we successfully prepared phosphorescent organic light-emitting diodes exhibiting high efficiency and adequate lifetimes. Moreover, using the present one-step borylation, we succeeded in the synthesis of an efficient, thermally activated delayed fluorescence emitter and boron-fused benzo[6]helicene.
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Affiliation(s)
- Hiroki Hirai
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Kiichi Nakajima
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Soichiro Nakatsuka
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Kazushi Shiren
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Jingping Ni
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Shintaro Nomura
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Toshiaki Ikuta
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Takuji Hatakeyama
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan). .,PRESTO (Japan) Science and Technology Agency, 5, Sanbancho, Chiyoda, Tokyo 102-0075 (Japan). .,ESICB, Kyoto University, Katsura, Kyoto 615-8520 (Japan).
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158
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Liu W, Zheng CJ, Wang K, Chen Z, Chen DY, Li F, Ou XM, Dong YP, Zhang XH. Novel Carbazol-Pyridine-Carbonitrile Derivative as Excellent Blue Thermally Activated Delayed Fluorescence Emitter for Highly Efficient Organic Light-Emitting Devices. ACS APPLIED MATERIALS & INTERFACES 2015; 7:18930-18936. [PMID: 26289611 DOI: 10.1021/acsami.5b05648] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel blue thermally activated delayed fluorescence (TADF) emitter, CPC (2,6-di(9H-carbazol-9-yl)-4-phenylpyridine-3,5-dicarbonitrile), was designed and synthesized. By directly linking carbazole (to serve as electron-donor) and pyridine-3,5-dicarbonitrile (to serve as electron-acceptor), and distributing cyanogroups and carbazole groups at the para-position of pyridine core, CPC successfully achieves an extremely small singlet-triplet splitting and fairish photoluminescence quantum yield, thus can act as the highly efficient blue TADF emitter. The optimized organic light-emitting diode (OLED) based on 13 wt % CPC doped in mCP (1,3-bis(9H-carbazol-9-yl)benzene) host exhibits maximum current efficiency, power efficiency, and external quantum efficiency of 47.7 cd A(-1), 42.8 lm W(-1), and 21.2%, respectively, which are the best results in reported blue TADF-based devices up to date and even comparable with the best reported blue phosphorescent OLEDs.
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Affiliation(s)
- Wei Liu
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- College of Materials Science and Engineering, Beijing Institute of Technology , Beijing 100081, P. R. China
| | - Cai-Jun Zheng
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Kai Wang
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of the Chinese Academy of Sciences , Beijing 100039, P. R. China
| | - Zhan Chen
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of the Chinese Academy of Sciences , Beijing 100039, P. R. China
| | - Dong-Yang Chen
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of the Chinese Academy of Sciences , Beijing 100039, P. R. China
| | - Fan Li
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Xue-Mei Ou
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Yu-Ping Dong
- College of Materials Science and Engineering, Beijing Institute of Technology , Beijing 100081, P. R. China
| | - Xiao-Hong Zhang
- Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- Functional Nano & Soft Materials Laboratory (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, P.R. China
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159
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Cui LS, Xie YM, Wang YK, Zhong C, Deng YL, Liu XY, Jiang ZQ, Liao LS. Pure Hydrocarbon Hosts for ≈100% Exciton Harvesting in Both Phosphorescent and Fluorescent Light-Emitting Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:4213-4217. [PMID: 26095076 DOI: 10.1002/adma.201501376] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/14/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Lin-Song Cui
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Yue-Min Xie
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Ya-Kun Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Cheng Zhong
- Department of Chemistry, Wuhan University, Wuhan, 430072, PR China
| | - Ya-Li Deng
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Xiang-Yang Liu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Zuo-Quan Jiang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
| | - Liang-Sheng Liao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, PR China
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160
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Li C, Wang S, Chen W, Wei J, Yang G, Ye K, Liu Y, Wang Y. High performance full color OLEDs based on a class of molecules with dual carrier transport channels and small singlet-triplet splitting. Chem Commun (Camb) 2015; 51:10632-5. [PMID: 26040328 DOI: 10.1039/c5cc03492b] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two deep blue emitting materials PPI-PPITPA and PPI-PPIPCz with dual carrier transport properties and small singlet-triplet splitting features are designed and synthesized. PPI-PPITPA and PPI-PPIPCz were used not only as non-doped emitting layers to fabricate highly efficient deep blue OLEDs, but also as hosts to construct high performance green, yellow and red phosphorescent OLEDs.
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Affiliation(s)
- Chenglong Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
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161
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Ban X, Jiang W, Sun K, Xie X, Peng L, Dong H, Sun Y, Huang B, Duan L, Qiu Y. Bipolar host with multielectron transport benzimidazole units for low operating voltage and high power efficiency solution-processed phosphorescent OLEDs. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7303-7314. [PMID: 25785899 DOI: 10.1021/acsami.5b00510] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two soluble bipolar host materials (mCP-BPBI and CP-QPBI), comprising different proportions of hole-transporting carbazole and electron-transporting benzimidazole, were synthesized. Their thermal, physical, and electrochemical properties were characterized. The designated bulky star-shaped structures efficiently suppress the direct intramolecular interaction between the donor and acceptor subunits to give high triplet energies. Through computational studies, varying the ratio of hole- and electron-transporting moieties could significantly change the carrier injection/transporting abilities and charge balance properties of the host materials. Indeed, CP-QPBI with more benzimidazole units shows extremely enhanced current density at the same voltage when compared to mCP-BPBI. The operating voltage of solution-processed phosphorescent light-emitting diodes with CP-QPBI as host were dramatically reduced by ∼3 V compared with the similar devices of mCP-BPBI. At the same time, the power efficiencies were improved for 2-2.5 times at the corresponding voltage. Importantly, both blue and green devices maintain their high efficiencies even at brightness up to 1000 cd m(-2), which clearly demonstrates that the new strategy applied to improve electron-transporting ability and charge-balance property of the solution-processable host material by tuning the ratio of donor and acceptor unit is profitable.
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Affiliation(s)
- Xinxin Ban
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Wei Jiang
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Kaiyong Sun
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Xinyu Xie
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Lang Peng
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Hongshuang Dong
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Yueming Sun
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Bin Huang
- †School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, P. R. China
| | - Lian Duan
- ‡Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Yong Qiu
- ‡Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
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162
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Xu X, Yang X, Zhao J, Zhou G, Wong WY. Recent Advances in Solution-Processable Dendrimers for Highly Efficient Phosphorescent Organic Light-Emitting Diodes (PHOLEDs). ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402266] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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163
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Singh G, Bhalla V, Kumar M. Carbazole-functionalized polyphenylene-decorated solid state emissive D–A–D molecules: reduced donor–acceptor interaction and enhanced emission in the solid state. Phys Chem Chem Phys 2015; 17:22079-89. [DOI: 10.1039/c5cp02234g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reducing intermolecular donor–acceptor interactions through steric effects can prevent ACQ and lead to enhanced emission in the solid state.
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Affiliation(s)
- Gopal Singh
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Vandana Bhalla
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Manoj Kumar
- Department of Chemistry
- UGC Sponsored-Centre for Advanced Studies-I
- Guru Nanak Dev University
- Amritsar-143005
- India
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164
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Kundu R, Kulshreshtha C. Design, synthesis and electronic properties of push–pull–push type dye. RSC Adv 2015. [DOI: 10.1039/c5ra13416a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Alkyne conjugated push–pull–push type dye where alkyne π-spacer and push units monitor the electronic properties of the dye.
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Affiliation(s)
- Rajen Kundu
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang 790-784
- Republic of Korea
| | - Chandramouli Kulshreshtha
- Department of Chemical Engineering
- Pohang University of Science and Technology
- Pohang 790-784
- Republic of Korea
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165
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Jiang W, Ban X, Sun Y. Enhanced electron affinity and charge balance property of a bipolar material: highly efficient solution-processed deep blue electrofluorescent and green electrophosphorescent devices. RSC Adv 2015. [DOI: 10.1039/c5ra12377a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The slight move in the ratio of the donor and acceptor group can slightly affect the optoelectronic property as a whole, and consequently modulate the electron affinity, charge balance property and exciton recombination efficiency.
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Affiliation(s)
- Wei Jiang
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China 211189
| | - Xinxin Ban
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China 211189
| | - Yueming Sun
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China 211189
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166
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Hua W, Liu Z, Duan L, Dong G, Qiu Y, Zhang B, Cui D, Tao X, Cheng N, Liu Y. Deep-blue electroluminescence from nondoped and doped organic light-emitting diodes (OLEDs) based on a new monoaza[6]helicene. RSC Adv 2015. [DOI: 10.1039/c4ra13486a] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Electroluminescent properties of a new monoaza[6]helicene as deep-blue light emitters in nondoped and doped OLEDs were investigated.
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Affiliation(s)
- Wanming Hua
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan
- China
| | - Zhi Liu
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan
- China
| | - Lian Duan
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Guifang Dong
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yong Qiu
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Baojie Zhang
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan
- China
| | - Deliang Cui
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan
- China
| | - Xutang Tao
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan
- China
| | - Na Cheng
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- China
| | - Yongjun Liu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan
- China
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167
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Wang K, Wang S, Wei J, Miao Y, Zhang Z, Zhang Z, Liu Y, Wang Y. Structurally simple phenanthroimidazole-based bipolar hosts for high-performance green and red electroluminescent devices. RSC Adv 2015. [DOI: 10.1039/c5ra14570h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two structurally simple and easily synthesized phenanthroimidazole-based bipolar-transporting host materials realized efficient green and red phosphorescent OLEDs with low efficiency roll-off.
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Affiliation(s)
- Kai Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Shipan Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Jinbei Wei
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yang Miao
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Zhenyu Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Zuolun Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yu Liu
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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168
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Lee IH, Lee JY. Phenothiazine dioxide based high triplet energy host materials for blue phosphorescent organic light-emitting diodes. RSC Adv 2015. [DOI: 10.1039/c5ra19722h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Donor–acceptor type high triplet energy host materials were derived from a phenothiazine dioxide based electron transport moiety and a carbazole based hole transport moiety.
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Affiliation(s)
- In Ho Lee
- Department of of Polymer Science and Engineering
- Dankook University
- Yongin
- Korea
| | - Jun Yeob Lee
- School of Chemical Engineering
- Sungkyunkwan University
- Suwon
- Korea
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169
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Bučinskas A, Volyniuk D, Danyliv Y, Grazulevicius JV, Baryshnikov G, Minaev B, Ivaniuk K, Cherpak V, Stakhira P. N-annelated perylenes as effective green emitters for OLEDs. RSC Adv 2015. [DOI: 10.1039/c5ra15075b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
New carbazole-substituted N-annelated perylenes with different linking topologies of the chromophores were synthesized and their physical properties were studied with various experimental techniques.
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Affiliation(s)
- A. Bučinskas
- Department of Polymer Chemistry and Technology
- Department of Organic Technology
- Kaunas University of Technology
- LT-50254 Kaunas
- Lithuania
| | - D. Volyniuk
- Department of Polymer Chemistry and Technology
- Department of Organic Technology
- Kaunas University of Technology
- LT-50254 Kaunas
- Lithuania
| | - Y. Danyliv
- Department of Polymer Chemistry and Technology
- Department of Organic Technology
- Kaunas University of Technology
- LT-50254 Kaunas
- Lithuania
| | - J. V. Grazulevicius
- Department of Polymer Chemistry and Technology
- Department of Organic Technology
- Kaunas University of Technology
- LT-50254 Kaunas
- Lithuania
| | - G. Baryshnikov
- Bohdan Khmelnytsky National University
- 18031 Cherkassy
- Ukraine
| | - B. Minaev
- Bohdan Khmelnytsky National University
- 18031 Cherkassy
- Ukraine
| | - K. Ivaniuk
- Lviv Polytechnic National University
- 79013 Lviv
- Ukraine
| | - V. Cherpak
- Lviv Polytechnic National University
- 79013 Lviv
- Ukraine
| | - P. Stakhira
- Lviv Polytechnic National University
- 79013 Lviv
- Ukraine
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170
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Tang C, Bi R, Tao Y, Wang F, Cao X, Wang S, Jiang T, Zhong C, Zhang H, Huang W. A versatile efficient one-step approach for carbazole–pyridine hybrid molecules: highly efficient host materials for blue phosphorescent OLEDs. Chem Commun (Camb) 2015; 51:1650-3. [DOI: 10.1039/c4cc08335k] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of carbazole–pyridine hybrid hosts were prepared by a convenient catalyst free C–N coupling reaction for high-efficiency blue electrophosphorescence.
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171
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Zhang S, Xu QL, Jing YM, Liu X, Lu GZ, Liang X, Zheng YX, Zuo JL. Yellow electrophosphorescent devices with hosts containing N1-(naphthalen-1-yl)-N1,N4-diphenylnaphthalene-1,4-diamine and tetraphenylsilane units. RSC Adv 2015. [DOI: 10.1039/c5ra02475g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Two novel host materials SiP and SiM with a high glass transition temperature were synthesized and the yellow phosphorescent OLEDs show maximum current and power efficiency of 40.81 cd A−1 and 33.60 lm W−1 with low efficiency roll-off.
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Affiliation(s)
- Song Zhang
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Qiu-Lei Xu
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Yi-Ming Jing
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Xuan Liu
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Guang-Zhao Lu
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Xiao Liang
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
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172
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Cho MJ, Kim SJ, Yoon SH, Shin J, Hong TR, Kim HJ, Son YH, Kang JS, Um HA, Lee TW, Bin JK, Lee BS, Yang JH, Chae GS, Kwon JH, Choi DH. New bipolar host materials for realizing blue phosphorescent organic light-emitting diodes with high efficiency at 1000 cd/m2. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19808-19815. [PMID: 25370737 DOI: 10.1021/am505049h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
New host molecules such as 9-(6-(9H-carbazol-9-yl)pyridin-3-yl)-6-(9H-carbazol-9-yl)-9H-pyrido[2,3-b]indole (pPCB2CZ) and 9-(6-(9H-carbazol-9-yl)pyridin-2-yl)-6-(9H-carbazol-9-yl)-9H-pyrido[2,3-b]indole (mPCB2CZ) were designed and synthesized for blue phosphorescent organic light-emitting diodes (PhOLEDs). The glass transition temperatures of two host molecules were measured higher than 120 °C, and the identical triplet energies were determined to be 2.92 eV for both molecules. The bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl)iridium(III) (FIrpic)-doped mPCB2CZ-based PhOLED exhibited practically useful driving voltage of 4.8 V in a simple organic three layer device configuration which has a smaller number of interfaces in conventional multilayer PhOLEDs. Also, the high quantum efficiency of 23.7% is reported at the practically useful brightness value of 1000 cd/m2.
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Affiliation(s)
- Min Ju Cho
- Department of Chemistry, Research Institute for Natural Sciences, Korea University , 5 Anam-dong, Sungbuk-Gu, Seoul 136-701, Republic of Korea
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173
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Chen L, Jiang Y, Nie H, Hu R, Kwok HS, Huang F, Qin A, Zhao Z, Tang BZ. Rational design of aggregation-induced emission luminogen with weak electron donor-acceptor interaction to achieve highly efficient undoped bilayer OLEDs. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17215-17225. [PMID: 25254940 DOI: 10.1021/am505036a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this work, two tailored luminogens (TPE-NB and TPE-PNPB) consisting of tetraphenylethene (TPE), diphenylamino, and dimesitylboryl as a π-conjugated linkage, electron donor, and electron acceptor, respectively, are synthesized and characterized. Their thermal stabilities, photophysical properties, solvachromism, fluorescence decays, electronic structures, electrochemical behaviors, and electroluminescence (EL) properties are investigated systematically, and the impacts of electron donor-acceptor (D-A) interaction on optoelectronic properties are discussed. Due to the presence of a TPE unit, both luminogens show aggregation-induced emission, but strong D-A interaction causes a decrease in emission efficiency and red-shifts in photoluminescence and EL emissions. The luminogen, TPE-PNPB, with a weak D-A interaction fluoresces strongly in solid film with a high fluorescence quantum yield of 94%. The trilayer OLED [ITO/NPB (60 nm)/TPE-PNPB (20 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm)] utilizing TPE-PNPB as a light emitter shows a peak luminance of 49 993 cd m(-2) and high EL efficiencies up to 15.7 cd A(-1), 12.9 lm W(-1), and 5.12%. The bilayer OLED [ITO/TPE-PNPB (80 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm)] adopting TPE-PNPB as a light emitter and hole transporter simultaneously affords even better EL efficiencies of 16.2 cd A(-1), 14.4 lm W(-1), and 5.35% in ambient air, revealing that TPE-PNPB is an eximious p-type light emitter.
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Affiliation(s)
- Long Chen
- Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT) , Guangzhou 510640, China
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174
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Zhang D, Duan L, Li C, Li Y, Li H, Zhang D, Qiu Y. High-efficiency fluorescent organic light-emitting devices using sensitizing hosts with a small singlet-triplet exchange energy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5050-5055. [PMID: 24944186 DOI: 10.1002/adma.201401476] [Citation(s) in RCA: 207] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 04/27/2014] [Indexed: 06/03/2023]
Abstract
Materials with small singlet-triplet splits (ΔEST s) are introduced as sensitizing hosts to excite fluorescent dopants, breaking the trade-off between small ΔEST and high radiative decay rates. A highly efficient orange-fluorescent organic light-emitting diode (OLED) is prepared, showing a maximum external quantum efficiency of 12.2%.
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Affiliation(s)
- Dongdong Zhang
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
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175
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Ledwon P, Brzeczek A, Pluczyk S, Jarosz T, Kuznik W, Walczak K, Lapkowski M. Synthesis and electrochemical properties of novel, donor–acceptor pyrrole derivatives with 1,8-naphthalimide units and their polymers. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.163] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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176
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Muangpaisal R, Hung WI, Lin JT, Ting SY, Chen LY. Binaphthalene bridged bipolar transporting materials for blue electroluminescence: toward high EL efficiency via molecular tuning. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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177
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Amacher A, Luo H, Liu Z, Bircher M, Cascella M, Hauser J, Decurtins S, Zhang D, Liu SX. Electronic tuning effects via cyano substitution of a fused tetrathiafulvalene–benzothiadiazole dyad for ambipolar transport properties. RSC Adv 2014. [DOI: 10.1039/c3ra46784h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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178
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Zhuang J, Li W, Su W, Zhou M, Cui Z. Novel ternary bipolar host material with carbazole, triazole and phosphine oxide moieties for high efficiency sky-blue OLEDs. NEW J CHEM 2014. [DOI: 10.1039/c3nj01054f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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179
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Liu Y, Sun X, Si Y, Qu X, Wang Y, Wu Z. Tuning the electronic properties and quantum efficiency of blue Ir(iii) carbene complexes via different azole-pyridine-based N^N′ ligands. RSC Adv 2014. [DOI: 10.1039/c3ra46804f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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180
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Leung MK, Hsieh YH, Kuo TY, Chou PT, Lee JH, Chiu TL, Chen HJ. Novel Ambipolar Orthogonal Donor–Acceptor Host for Blue Organic Light Emitting Diodes. Org Lett 2013; 15:4694-7. [DOI: 10.1021/ol402001v] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Man-kit Leung
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Yu-Hsuan Hsieh
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Ting-Yi Kuo
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Pi-Tai Chou
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Jiun-Haw Lee
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Tien-Lung Chiu
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
| | - Hsin-Jen Chen
- Department of Chemistry, Institute of Polymer Science and Engineering, Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C., and Department of Photonics Engineering, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan, R.O.C
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181
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Weber L, Kahlert J, Brockhinke R, Böhling L, Halama J, Brockhinke A, Stammler HG, Neumann B, Nervi C, Harder RA, Fox MA. C,C'-bis(benzodiazaborolyl)dicarba-closo-dodecaboranes: synthesis, structures, photophysics and electrochemistry. Dalton Trans 2013; 42:10982-96. [PMID: 23793134 DOI: 10.1039/c3dt51125a] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six new C,C'-bis(benzodiazaborolyl)dicarba-closo-dodecaboranes, 1,A-R2-1,A-C2B10H10, where R represents the group 2-(1,3-Et2-1,3,2-N2BC6H4) or 2-(1,3-Ph2-1,3,2-N2BC6H4) and A is 2, 7 or 12, were synthesized from o-, m-, and p-dicarbadodecaboranes (carboranes) by lithiation and subsequent treatment with the respective 2-bromo-1,3,2-benzodiazaboroles. UV-visible and fluorescence spectra of all carboranes display low energy charge transfer emissions. While such emissions with Stokes shifts between 17,330 and 21,290 cm(-1) are typical for C,C'-bis(aryl)-ortho-carboranes, the observed low-energy emissions with Stokes shifts between 8320 and 15,170 cm(-1) for the meta- and para-isomers are unusual as high-energy emissions are typical for meta- and para-dicarbadodecaboranes. Fluorescence quantum yields (φF) for the novel 1,7- and 1,12-bis(benzodiazaborolyl)-carboranes depend on the substituents at the nitrogen atoms of the heterocycle. Thus, the para-carborane with N-ethyl substituents 1,12-(1',3'-Et2-1',3',2'-N2BC6H4)2-1,12-C2B10H10 has a φF value of 41% in cyclohexane solution and only of 9% in the solid state, whereas the analogous 1,12-(1',3'-Ph2-1',3',2'-N2BC6H4)2-1,12-C2B10H10 shows quantum yields of 3% in cyclohexane solution and 72% in the solid state. X-ray crystallographic, computational and cyclic voltammetry studies for these carboranes are also presented.
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Affiliation(s)
- Lothar Weber
- Fakultät für Chemie der Universität Bielefeld, 33615 Bielefeld, Germany.
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182
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Lee CW, Lee JY. High quantum efficiency in solution and vacuum processed blue phosphorescent organic light emitting diodes using a novel benzofuropyridine-based bipolar host material. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:596-600. [PMID: 23136111 DOI: 10.1002/adma.201203180] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 09/26/2012] [Indexed: 06/01/2023]
Abstract
High quantum efficiency in solution and vacuum processed blue phosphorescent organic light emitting diodes are achieved using a new benzofuropyridine based bipolar host material. High quantum efficiencies of 18.0% and 23.0% are obtained in soluble and vacuum evaporable blue devices.
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Affiliation(s)
- Chil Won Lee
- Department of Polymer Science and Engineering, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin, Gyeonggi, 448-701, Korea
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183
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Kim SJ, Kim YJ, Son YH, Hur JA, Um HA, Shin J, Lee TW, Cho MJ, Kim JK, Joo S, Yang JH, Chae GS, Choi K, Hyuk Kwon J, Hoon Choi D. High-efficiency blue phosphorescent organic light-emitting diodes using a carbazole and carboline-based host material. Chem Commun (Camb) 2013; 49:6788-90. [DOI: 10.1039/c3cc42569j] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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184
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Tan Y, Yu J, Gao J, Cui Y, Wang Z, Yang Y, Qian G. A fluorescent pH chemosensor for strongly acidic conditions based on the intramolecular charge transfer (ICT) effect. RSC Adv 2013. [DOI: 10.1039/c3ra00120b] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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185
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Chen CT, Chao WS, Liu HW, Wei Y, Jou JH, Kumar S. Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications. RSC Adv 2013. [DOI: 10.1039/c3ra41642a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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186
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Kupfer S, Guthmuller J, González L. An Assessment of RASSCF and TDDFT Energies and Gradients on an Organic Donor–Acceptor Dye Assisted by Resonance Raman Spectroscopy. J Chem Theory Comput 2012; 9:543-54. [DOI: 10.1021/ct3009057] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Kupfer
- Institute for Physical Chemistry,
Friedrich-Schiller University
Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - Julien Guthmuller
- Faculty of Applied Physics and
Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80233
Gdansk, Poland
| | - Leticia González
- Institute
of Theoretical Chemistry,
University of Vienna, Währinger Str. 17, 1090 Vienna, Austria
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187
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Huang L, Stolte M, Bürckstümmer H, Würthner F. High-performance organic thin-film transistor based on a dipolar organic semiconductor. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:5750-4. [PMID: 22899558 DOI: 10.1002/adma.201202441] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 07/16/2012] [Indexed: 05/21/2023]
Abstract
A merocyanine dye with an outstandingly large dipole moment of 14 Debye affords thin-film transistors with 0.18 cm(2) V(-1) s(-1) hole mobility and a 10(6) on/off ratio. These results suggest that molecules that lack symmetry and possess large dipole moments can perform excellent charge carrier transport contrary to established molecular semiconductor design strategies.
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Affiliation(s)
- Lizhen Huang
- Universität Würzburg, Institut für Organische Chemie & Röntgen Research, Center for Complex Material Systems, Germany
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188
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Synthesis of new bipolar materials based on diphenylphosphine oxide and triphenylamine units: efficient host for deep-blue phosphorescent organic light-emitting diodes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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189
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An ZF, Zheng C, Chen RF, Yin J, Xiao JJ, Shi HF, Tao Y, Qian Y, Huang W. Exceptional Blueshifted and Enhanced Aggregation-Induced Emission of Conjugated Asymmetric Triazines and Their Applications in Superamplified Detection of Explosives. Chemistry 2012; 18:15655-61. [DOI: 10.1002/chem.201202337] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Indexed: 12/25/2022]
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190
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Experimental and theoretical study of the charge transport property of 4,4′-N,N′-dicarbazole-biphenyl. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4747-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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191
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Lee CW, Lee JY. N,N-Diphenylpyridin-4-amine as a bipolar core structure of high-triplet-energy host materials for blue phosphorescent organic light-emitting diodes. Chem Asian J 2012; 7:2203-7. [PMID: 22821901 DOI: 10.1002/asia.201200463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 06/11/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Chil Won Lee
- Department of Polymer Science and Engineering, Dankook University, 126, Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do, 448-701, Korea
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192
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Huang H, Chen Z, Ortiz RP, Newman C, Usta H, Lou S, Youn J, Noh YY, Baeg KJ, Chen LX, Facchetti A, Marks T. Combining Electron-Neutral Building Blocks with Intramolecular “Conformational Locks” Affords Stable, High-Mobility P- and N-Channel Polymer Semiconductors. J Am Chem Soc 2012; 134:10966-73. [DOI: 10.1021/ja303401s] [Citation(s) in RCA: 188] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hui Huang
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
| | - Zhihua Chen
- Polyera Corporation, 8045
Lamon Avenue, Skokie, Illinois 60077, United States
| | - Rocio Ponce Ortiz
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
- Department of
Physical Chemistry, University of Malaga, Malaga 29071, Spain
| | - Christopher Newman
- Polyera Corporation, 8045
Lamon Avenue, Skokie, Illinois 60077, United States
| | - Hakan Usta
- Polyera Corporation, 8045
Lamon Avenue, Skokie, Illinois 60077, United States
| | - Sylvia Lou
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
| | - Jangdae Youn
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
| | - Yong-Young Noh
- Department of Chemical Engineering, Hanbat National University, Daejeon, 305-719 (Republic
of Korea)
| | - Kang-Jun Baeg
- Convergence Components & Materials Laboratory, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-350, Republic of Korea
| | - Lin X. Chen
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
| | - Antonio Facchetti
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
| | - Tobin Marks
- Department of Chemistry and
the Materials Research Center, Northwestern University, Evanston Illinois 60208, United States
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193
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Hu B, Yao C, Wang QW, Zhang H, Yu JK. Carbon, Nitrogen, and Chalcogen Substitution Effects on 2,1,3-Benzothiadiazole Derivative: Theoretical Investigations of Electronic, Optical, and Charge Transport Properties. CHINESE J CHEM PHYS 2012. [DOI: 10.1088/1674-0068/25/01/25-30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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194
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Thomas A, Bhanuprakash K. Comparative Study of the Semiconducting Properties of Benzothiadiazole and Benzobis(thiadiazole) Derivatives Using Computational Techniques. Chemphyschem 2012; 13:597-605. [DOI: 10.1002/cphc.201100565] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 10/27/2011] [Indexed: 11/11/2022]
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195
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Chang CH, Kuo MC, Lin WC, Chen YT, Wong KT, Chou SH, Mondal E, Kwong RC, Xia S, Nakagawa T, Adachi C. A dicarbazole–triazine hybrid bipolar host material for highly efficient green phosphorescent OLEDs. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm14686j] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Goel A, Kumar V, Singh SP, Sharma A, Prakash S, Singh C, Anand RS. Non-aggregating solvatochromic bipolar benzo[f]quinolines and benzo[a]acridines for organic electronics. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31052j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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197
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Thirion D, Romain M, Rault-Berthelot J, Poriel C. Intramolecular excimer emission as a blue light source in fluorescent organic light emitting diodes: a promising molecular design. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16774c] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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198
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Linton KE, Fisher AL, Pearson C, Fox MA, Pålsson LO, Bryce MR, Petty MC. Colour tuning of blue electroluminescence using bipolar carbazole–oxadiazole molecules in single-active-layer organic light emitting devices (OLEDs). ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31825c] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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199
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Bui TT, Vuong MH, Bonneval BGD, Alary F, Kane J, Duhayon C, Sournia-Saquet A, Moineau-Chane-Ching KI. Synthesis, X-ray crystal structures, optical properties and modelling data of neutral bis(1,2-dithiolene) nickel complexes of the “non-cyclic SR” family. NEW J CHEM 2012. [DOI: 10.1039/c2nj40398f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Huang J, Su JH, Tian H. The development of anthracene derivatives for organic light-emitting diodes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16855c] [Citation(s) in RCA: 222] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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