文献类型：期刊文献

中文题名：Synthesis and properties of polybenzazoles containing flexible methylene in backbone

作者：Xiaohui XU[1];Xiaoyun LIU[1];Chengjun ZHOU[1];Qixin ZHUANG[1];Zhewen HAN[1]

机构：[1]Key Laboratory for Ultrafine Materials of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2008

卷号：2

期号：4

起止页码：412

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；PubMed;

语种：英文

中文关键词：polybenzazole;aliphatic dicarboxylic acid;synthesis and characterization;photophysical property;stokes shift

摘要：A novel series of polybenzazoles with rigid-rod benzoxazole cycle and soft methylene segment was designed and synthesized via solution condensation poly-merizations from 4,6-diamino-l,3-benzenediol dipho-sphate,terephthalic acid and aliphatic dicarboxylic acid.The structures of polybenzazoles were characterized by means of FT-IR,1H NMR and Wide-angle X-ray diffrac-tion(WAXRD).All the polymers show excellent thermal stability and the TdS was above 471℃,The intrinsic vis-cosities[η]of the polymers ranged from 0.8 to 0.9.The UV-Vis absorption peaks of the polymers in MSA were blue-shifted from 429 nm for PBO to 291 nm for PBOC7,and the Stokes shifts in PL spectra enlarged.