摘要
3-Ethynyl-4-(trimethylsilyl)thiophene(1a)and3-ethynyl-4-bromothiophene(1b)selectivelyundergoacetylenepolymerizationsinthepresenceoftheMoCl5-andWCl6-Ph3SiHcatalyststogivesoluble,high-molecular-weightpoly(thienylacetylenes)(2)(Mwupto602000)inhighyields(upto100%).LighttransmissionspectraofTHFsolutionsof2continuouslyred-shiftwithincreasingconcentration.Theconcentratochromismshowsalogarithmicconcentrationdependence;thatis,theopticaltransitionsof2arepredictablytunablebysimplychangingtheirconcentrations.
出版日期
1999年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)