Siloles and Acetenyl Aromatics Copolymers: Synthesis, Characterization and Photophysical Properties

作     者：Zhenhua He Guoqiao Lai Zhifang Li Xiao Yuan Yongjia Shen Chengyun Wang 

作者机构：Key Laboratory for Advanced Materials and Institute of Fine ChemicalsEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of EducationHangzhou Normal UniversityHangzhouZhejiang 310012China 

出 版 物：《中国化学:英文版》 (Chinese Journal of Chemistry)

年 卷 期：2015年第33卷第5期

页      面：550-558页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：the financial support from the National Natural Science Foundation of China(Nos.20872035 21076078) and the Hangzhou Normal University 

主　　题：silole acetylene carbazole fluorene conjugated polymer density functional theory 

摘      要：Two copolymers,poly(1,1-dimethyl-3,4-diphenylsilole-alt-N-hexyl-3,6-diethynylcarbazole)(PS-DyCz)and poly-(1,1-dimethyl-3,4-diphenylsilole-alt-2,7-diethynyl-9,9 -dihexylfluorene)(PS-DyF),were synthesized by Sonogashira coupling reaction of 2,5-dibromo-1,1-dimethyl-3,4-diphenylsilole and N-hexyl-3,6-diethynylcarbazole or 2,7-diethynyl-9,9 -dihexylfluorene,*** chemical structures of the copolymers were characterized by NMR,FT-IR *** thermal and photophysical properties were evaluated by TGA,DSC,UV-Vis and fluorescence spectroscopy,*** weight-averaged molecular weights(Mw)of PS-DyCz and PS-DyF are 1.20×10^(4) and 3.83×10^(4) Da,*** degree of polymerization is 8 and 22 ***π-conjugated polymers exhibited lower band-gap of 2.25 and 2.70 eV due to the presence of silole rings and C≡C triple bonds in their backbone,the results were consistent with the density functional(DFT)calculations at the B3LYP/6-31G^(*)level.