文献类型：会议论文

英文题名：Synthesis and optical properties of hyperbranched polyarylenes

作者：Peng, Han[1]; Luo, Jingdong[1]; Cheng, Lin[1]; Lam, Jacky W.Y.[1]; Xu, Kaitian[1]; Dong, Yuping[1]; Zhang, Dezhen[2]; Huang, Yi[2]; Xu, Zhongde[2]; Tang, Ben Zhong[1]

机构：[1]Hong Kong Univ Sci & Technol, Dept Chem, Inst Nano Sci & Technol, Open Lab Chirotechnol,Inst Mol Technol Drug Disco, Kowloon, Hong Kong, Peoples R China;[2]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China

会议论文集：International Conference on Photo-Responsive Organics and Polymers (ICPOP 2001)

会议日期：AUG 19-25, 2001

会议地点：CHEJU ISL, SOUTH KOREA

语种：英文

外文关键词：polymer synthesis; alkyne polycyclotrimerization; hyperbranched polyarylenes; conjugated polymers; light emission; optical limiting

摘要：High molecular weight, hyperbranched polyarylenes were synthesized in high isolation yields by the copolycyclotrimerizations of 2,5-diethynylthiophene (1), 4,4'-biphenyldiyne (2), and 2,7-diethynylfluorenes (3) with I-heptyne (4) and 1-dodecyne (5) using TaCl5-Ph4Sn as the catalyst in toluene. The structures of the polymers were characterized by IR, NMR, TGA, and UV analyses. All the polymers exhibited outstanding thermal stability and emitted strong blue light, whose intensities are higher than that of poly(l-phenyl-l-octyne), a well-known highly emissive polyacetylene. Little red shift was observed in the photoluminescence of the polymer thin films. The polymers strongly attenuated intense pulses of 532 nm laser pulses. (C) 2002 Elsevier Science B.V. All rights reserved.