SYNTHESIS AND PROPERTIES OF DITHIENOSILOLES

A series of dithienosilole derivatives were synthesized and some of th eir properties were investigated. UV spectra of dithienosiloles show a bsorption bands around 350 nm and their cyclic voltammograms display o xidation peaks at about 1.2 V vs. SCE. Nickel-catalyzed coupling of 2, 6-dibromodithienosilole with the diGrignard reagent prepared from bis( 5-bromothienyl)tetraethyldisilane afforded an alternating polymer comp osed of a 2,6-dithienyldithienosilole system and tetraethyldisilanylen e unit. When the polymer film was doped with FeCl3 vapor, the film bec ame conducting with the maximum conductivity of 7.0 x 10(-3) S/cm. (C) 1998 Elsevier Science S.A.