SYNTHESIS AND OPTICAL PROPERTIES OF POLY(THIENYLACETYLENES)

• 来源期刊: 高分子科学(英文版)
• 年，卷（期）: 1999,（1）
• 页码范围: 81-86
• 页数: 6页
• 语种: 英文

摘要

3-Ethynyl-4-(trimethylsilyl)thiophene (1a) and 3-ethynyl-4-bromothiophene (1b) selectively undergo acetylene polymerizations in the presence of the MoCl5- and WCl6-Ph3SiH catalysts to give soluble,high-molecular-weight poly(thienylacetylenes) (2) (Mw up to 602000) in high yields (up to 100%). Light transmission spectra of THF solutions of 2 continuously red-shift with increasing concentration. The concentratochromism shows a logarithmic concentration dependence; that is, the optical transitions of 2 are predictably tunable by simply changing their concentrations.