THE INFLUENCE OF ALKOXY SIDE-CHAINS ON THE CONFORMATIONAL FLEXIBILITY OF OLIGOTHIOPHENES AND POLYTHIOPHENES

被引:75
作者
MEILLE, SV [1 ]
FARINA, A [1 ]
BEZZICCHERI, F [1 ]
GALLAZZI, MC [1 ]
机构
[1] POLITECN MILAN,DIPARTIMENTO CHIM IND,I-20133 MILAN,ITALY
关键词
D O I
10.1002/adma.19940061109
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
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页码:848 / 851
页数:4
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