Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 28, Issue 17, Pages 1809-1815Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200700399
Keywords
chiral; conjugated polymers; metal polymers complexes; self-assembly; sensors
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A series of chiral thio-and oxo-substituted polythiophenes and polythienylethynylenes has been synthesised and investigated. The replacement of an oxo-linkage by a thio-linkage distorts and/or inhibits the helical aggregation behaviour. The quenching of fluorescence upon coordination to palladium is also radically different depending on the presence of oxo- or thio-substitution of the thiophene units. The alkylthio-substituted polythiophenes and polythienylethynylenes do act as sensors for palladium by quenching of their fluorescence to a significantly greater extent than the quenching observed for nonthio functionalised polythiophenes and polythienylethynylenes.
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