A NOVEL TYPE OF SEMICONDUCTING POLYMERS - SYNTHESIS AND PROPERTIES OF ELECTROCHEMICALLY-DOPED POLYMERS CONTAINING PENDANT OLIGOTHIOPHENES

被引:18
作者
NAWA, K
MIYAWAKI, K
IMAE, I
NOMA, N
SHIROTA, Y
机构
[1] Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565, Yamadaoka
关键词
5-VINYL-2,2'/5',2''/5'',2'''-QUATERTHIOPHENE; 2-[4-(2-THIENYL)PHENYL]-5-VINYLTHIOPHENE; ELECTROLYTIC POLYMERIZATION; ELECTROCHEMICALLY-DOPED POLYMER; ELECTRICAL CONDUCTIVITY;
D O I
10.1016/0379-6779(93)90220-Q
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For the purpose of developing a novel type of electrically conducting polymers, synthesis and properties of electrochemically-doped, non-conjugated vinyl type polymers containing oligothiophenes as pendant groups have been studied. New vinyl monomers, 2-[4-(2-thienyl)-phenyl]-5-vinylthiophene and 5-vinyl-2,2':5',2'':5'',2'''-quaterthiophene, have been synthesized, and electrolytic polymerization carried out by controlled potential anodic oxidation. The resulting polymers were identified as partially oxidized radical cation salts with ClO4- as a dopant, having partially cross-linked structures. The polymers undergo reversible color changes. Electrochemically-doped poly(5-vinyl-2,2':5',2'':5'',2'''-quaterthiophene) exhibits room-temperature conductivities of ca. 10(-7) S cm-1 with activation energies of ca. 0.5 eV.
引用
收藏
页码:1176 / 1181
页数:6
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