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Regioregular Poly(3-hexylthiophene) in a Novel Conducting Amphiphilic Block Copolymer
C Rockford Craley1, Rui Zhang, Tomasz Kowalewski
1Department of Chemistry, Carnegie Mellon University 4400 Fifth Ave., Pittsburgh, Pennsylvania 15213, USA.
Abstract:
Regioregular poly(3-hexylthiophene) has been successfully incorporated into a novel amphiphilic block copolymer. The amphiphilic nature of poly(3-hexylthiophene)-block-poly(acrylic acid) has been investigated using spectroscopic methods and has yielded solvatochromic behavior in several solvents of varying polarity. Evidence suggests that a supramolecular, long range ordering of block copolymer occurs in polar solvents, resulting in the formation of aggregates. Despite relatively large amounts of non-conductive blocks, the poly(3-hexylthiophene) diblock copolymer yields a high conductivity of 1 S · cm(-1) , and atomic force microscopy shows the formation of a highly organized nanofibrilar morphology in the solid state.
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