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Type: Artigo de periódico
Title: Synthesis and characterization of thienyl- and terthienyl-group-bearing methacrylic polymers as precursors for grafting reactions of thiophene side-chains
Author: Ranieri, N
Ruggeri, G
Ciardelli, F
Abstract: Acrylic and methacrylic monomers bearing pyrrolyl, thienyl and terthienyl groups, were synthesized and copolymerized with various amounts of butyl acrylate and butyl methacrylate. In the resulting copolymers the heterocycle side-groups behaved as initiators in the oxidative polymerization of thiophene, allowing the polythiophene chains to grow from the side-groups and leading therefore to graft copolymers. These last were collected mostly as insoluble fractions after extraction with chloroform. Processible polymers with polythiophene side-chains were obtained when in the precursor polymer the heterocycle side-group content was very low. The presence in the graft copolymers of a significant number of stiff polythiophene side-chains was responsible for the rise in Tg values in comparison with the precursor polymers. The average number of grafted thiophene units, evaluated in the range 2-7.5, did not relate directly to measured conductivity values that were in the range 5.9 x 10(-5)-6.2 x 10(-2) Scm(-1). (C) 1999 Society of Chemical Industry.
Subject: thienyl
precursor polymer
thiophene grafting
Country: Inglaterra
Editor: John Wiley & Sons Ltd
Rights: fechado
Identifier DOI: 10.1002/(SICI)1097-0126(199911)48:11<1091
Date Issue: 1999
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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