A new narrow band gap electroactive polymer: Poly[2,5-bis{2-(3,4-ethylenedioxy)thienyl}silole]

Authors
Lee, Y Sadki, S Tsuie, B Reynolds, JR
Citation
Y. Lee et al., A new narrow band gap electroactive polymer: Poly[2,5-bis{2-(3,4-ethylenedioxy)thienyl}silole], CHEM MATER, 13(7), 2001, pp. 2234
Citations number
24
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
13
Issue
7
Year of publication
2001
Database
ISI
SICI code
0897-4756(200107)13:7<2234:ANNBGE>2.0.ZU;2-A
Abstract
A new silole-containing monomer, 1,1-dihexyl-3,4-diphenyl-2,5-bis{2-(3,4-et hylenedioxy)-thienyl}silole, was synthesized and electropolymerized at a qu ite low potential (E-ox,E-m = 0.29 V vs Fc/Fc(+)) to yield an electroactive polymer. Spectroelectrochemical and colorimetric analysis has shown that t he polymer switches between blue and transmissive yellow-green upon doping. The low-lying LUMO levels of the siloles, combined with the electron-rich character of the 3,4-ethylene dioxythiophene units, confer upon this new po lymer a narrow band gap of 1.3-1.4 eV.