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Synthesis and optical properties of copolymers containing carbazole and 1,3,4-oxadiazole groups as blue host matrix and charge transport materials for polymer light emitting devices

Title
Synthesis and optical properties of copolymers containing carbazole and 1,3,4-oxadiazole groups as blue host matrix and charge transport materials for polymer light emitting devices
Authors
Wang, H[Wang, Hui]Ryu, JT[Ryu, Jeong-Tak]Han, YS[Han, Yoon Soo]Kim, DH[Kim, Dae-Hwan]Choi, BD[Choi, Byeong Dae]Kwon, Y[Kwon, Younghwan]
DGIST Authors
Han, YS[Han, Yoon Soo]; Kim, DH[Kim, Dae-Hwan]
Issue Date
2007-02
Citation
Molecular Crystals and Liquid Crystals, 463, 285-295
Type
Article
Article Type
Article
Keywords
1,3,4-OxadiazoleAbsorption SpectroscopyBlue EmissionCharge TransportChemical ModificationCopolymersEnergy GapLight-Emitting DiodesN-ArylcarbazolePalladium-Catalyzed PolycondensationReaction Kinetics
ISSN
1542-1406
Abstract
Alternating copolymers with N-arylcarbazole as hole injection and transport moieties with blue emission and 1,3,4-oxadiazole as electron transporting and hole blocking moieties were synthesized by Pd-catalyzed polycondensation reaction, and named as poly[N-(4-aminophenyl)-carbazole-alt-N-(2-ethylhexyl)-3, 6-carbazole] (P1), poly[N-(4-aminophenyl)-carbazole-alt-2,5-bis(4-phenyl)-1,3,4- oxadiazole] (P2) and poly[N-(4-aminophenyl)-carbazole-alt-2,5-bis(4- methylenephenyl)-1,3,4-oxadiazole] (P3). It was observed that UV-Vis absorption spectra showed two main peaks at 290295 and 310380 nm and maximum photoluminescence peaks of the polymers were all in the range of blue light emission from 418 to 453nm. It appeared that optical and electrochemical properties of polymers such as HOMO, LUMO levels and band gap energy could be fine tuned by chemical modification of polymer structures.
URI
http://hdl.handle.net/20.500.11750/2521
DOI
10.1080/15421400601013445
Publisher
Taylor and Francis Ltd.
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles
Convergence Research Center for Solar Energy1. Journal Articles


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