Synthesis and Properties of Novel Germole-Containing Polymers by Reaction of Bis(cyclopentadienyl)titana-cyclopentadiene-Containing Polymer with Germanium Tetrachloride

摘要

The synthesis and properties of novel germole-containing polymers are described.A polymer possessing bis(cyclopentadienyl)titanacyclopentadiene unit in the main chain was prepared by the polymerization of 1,4-bis(1-hexynyl)benzene and a low-valent bis(cyclopentadienyl)titanium(II)complex,generated in situ from bis(cyclo-pentadienyl)titanium(IV)dichloride and n-butyllithium(2 equiv).The organotitanium polymer thus obtained was converted into a 1,1-dichlorogermole-containing polymer by the reaction with GeCl4,and its further reaction with methyllithium gave a 1,1-dimethylgermole-containing polymer.Optical and electrochemical properties of the resulting 1,1-dimethylgermole-containing polymer were studied by the UV-vis spectra and the cyclic voltammetric analyses,from which the germole-containing polymer was supposed to have a low-lying LUMO level.