ELECTRICAL-CONDUCTIVITY OF ORGANOSILICON POLYMERS II - SYNTHESIS AND ELECTRICAL CONDUCTIVITIES OF IODINE-DOPED POLYSILANES CONTAINING AMINO-GROUPS

A series of polysilanes containing an N,N-dimethylaminophenyl group an d N-pyrrolyalkyl group as in the side chain were prepared by the Wurtz coupling polymerization. The polymerization of N-pyrrolylbutyl or N-p yrrolglhexyl-substituted dichlorosilane with sodium gave successfully the polysilanes with higher molecular weight than 10(5). The electrica l conductivities of I-2-doped polysilanes were dependent on the chemic al structure of the amino side chain. Moreover, by use of excess iodin e, the conductivity of the polymer was enhanced. The electrical conduc tivity of poly [bis{6-(N-pyrrolyl)hexyl}silane] (7a) increased to a ma ximum value of 8 x 10(-2) S/cm. (C) 1998 Elsevier Science S.A. All rig hts reserved.