文献类型：期刊文献

中文题名：Siloles and Acetenyl Aromatics Copolymers: Synthesis, Characterization and Photophysical Properties

作者：Zhenhua He[1,2];Guoqiao Lai[2];Zhifang Li[2];Xiao Yuan[1];Yongjia Shen[1];Chengyun Wang[1]

机构：[1]Key Laboratory for Advanced Materials and Institute of Fine Chemicals,East China University of Science and Technology,Shanghai 200237,China;[2]Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education,Hangzhou Normal University,Hangzhou,Zhejiang 310012,China

年份：2015

卷号：33

期号：5

起止页码：550

中文期刊名：Chinese Journal of Chemistry

外文期刊名：中国化学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2015_2016】；PubMed;

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

语种：英文

中文关键词：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,respectively.The chemical structures of the copolymers were characterized by NMR,FT-IR techniques.Their thermal and photophysical properties were evaluated by TGA,DSC,UV-Vis and fluorescence spectroscopy,respectively.The weight-averaged molecular weights(Mw)of PS-DyCz and PS-DyF are 1.20×10^(4) and 3.83×10^(4) Da,respectively.The degree of polymerization is 8 and 22 units.Theseπ-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.