Alkoxy-substituted thiophenes have been shown to yield polymers with a reduced bandgap. An X-ray investigation of two symmetrical pentoxy-substituted 2,2′-bithienyls is reported, and their structure and packing described. It is suggested that the extra rigidity and packing stability of the alkoxythiophene oligomers and polymers accounts for their lower solubility and higher melting points compared to their alkyl-substituted analogues.
THE INFLUENCE OF ALKOXY SIDE-CHAINS ON THE CONFORMATIONAL FLEXIBILITY OF OLIGOTHIOPHENES AND POLYTHIOPHENES
MEILLE, STEFANO VALDO;GALLAZZI, MARIA CARMELA
1994-01-01
Abstract
Alkoxy-substituted thiophenes have been shown to yield polymers with a reduced bandgap. An X-ray investigation of two symmetrical pentoxy-substituted 2,2′-bithienyls is reported, and their structure and packing described. It is suggested that the extra rigidity and packing stability of the alkoxythiophene oligomers and polymers accounts for their lower solubility and higher melting points compared to their alkyl-substituted analogues.File in questo prodotto:
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