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Synthesis and optical properties of poly(thienylacetylenes)

Authors Tang, BZ View this author's profile
Poon, WH
Peng, H.
Wong, HNC
Ye, XS
Monde, T.
Issue Date 1999
Source Chinese Journal of Polymer Science , v. 17, (1), 1999, p. 81-86
Summary 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) (M-w 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.
ISSN 0256-7679
Language English
Format Article
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