Δ4,4′-dicyclopenta[2,1-b:3,4-b′]dithiophene.: A conjugated bridging unit for low band gap conducting polymers

被引：21
|
作者：
Loganathan, K [1 ]
Cammisa, EG [1 ]
Myron, BD [1 ]
Pickup, PG [1 ]
机构：
[1] Mem Univ Newfoundland, Dept Chem, St Johns, NF A1B 3X7, Canada
来源：
CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 09期
关键词：
D O I：
10.1021/cm0218110
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Delta(4,4 ')-Dicyclopenta[2,1-b:3,4-b'ldithiophene has been prepared from cyclopenta[2,1-b:3,4blbithiophen-4-one and its electrochemical and spectroscopic properties have been characterized. Its low HOMO-LUMO gap and facile electrochemical polymerization make it an attractive building block for low band gap conducting polymers. Films of poly-(Delta(4,4')- dicyclopenta[2,1-b:3,4-b']dithiophene) on electrodes have been characterized by cyclic voltammetry, electronic absorption spectroscopy, IR spectroscopy, and in situ conductivity measurements. The spectroscopic and electrochemical results confirm the formation of a polymeric material with long conjugation length and low band gap (ca. 0.5 eV). The intrinsic conductivity is consistent with this band gap.
引用
收藏
页码：1918 / 1923
页数：6
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