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Synthesis,characterization and applications of vinylsilafluorene copolymers:New host materials for electroluminescent devices

查看全文 作　　者：CHEN RunFeng,ZHU Rui,ZHENG Chao,FAN QuLi & HUANG Wei* Key Laboratory for Organic Electronics & Information Displays(KLOEID);Institute of Advanced Materials(IAM),Nanjing University of Posts and Telecommunications(NUPT),Nanjing 210046,China 高影响力作者 出　　处：《Science China Chemistry》索引2010年第53卷第11期,共8页高影响力期刊 基　　金：supported by the National Basic Research Program of China (973 Program) (2009CB930601);National Natural Science Foundation of China (20804020,60976019,and 20974046);Program for New Century Excellent Talents in University (NCET-07-0446);Natural Science Foundation of Jiangsu College Council (Grant No. 08KJB150012);Scientific and Technological Innovation Teams of Colleges and Universities in Jiangsu Province (TJ207035);Nanjing University of Posts and Telecommunications (NY207161) 摘　　要：Vinylsilafluorene(VSiF) was successfully synthesized and copolymerized with vinylcarbazole and methyl methacrylate via free radical copolymerization for the first time.The synthesis,photophysical properties,computational modeling studies,and organic light-emitting devices of the VSiF copolymers were presented.The good coordinated photoluminescent(PL) spectra with the absorption of blue light-emitting materials and the high energy band-gap of the VSiF copolymers were observed.Higher triplet band gap(3Eg) to host the blue phosphorescent emitters and better HOMO and LUMO than PVK for electron and hole injection and transportation of the VSiF model compounds were revealed by density functional theory(DFT) calculations.The preliminary device results in applications of these copolymers as host materials for green phosphorescent emitters demonstrate the copolymers of VSiF and vinylcarbazole have comparable device performance of polyvinylcarazole(PVK),suggesting a bright future of VSiF as building blocks for host materials. 关 键 词：vinylsilafluorene HOST MATERIALS polyvinylsilafluorene
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