Zhang, Kai and Tieke, Bernd and Forgie, John C. and Vilela, Filipe and Skabara, Peter J. and Skabara, Peter (2012) Donor-acceptor conjugated polymers based on p- and o-benzodifuranone and thiophene derivatives: electrochemical preparation and optical and electronic properties. Macromolecules, 45 (2). pp. 743-750. ISSN 0024-9297Full text not available in this repository. (Request a copy from the Strathclyde author)
A series of pi-conjugated polymers consisting of bis-EDOT or bis-EDTT units and p- or o-diphenylbenzodifuranones have been prepared electrochemically. The monomers and polymers were investigated using UV/vis absorption spectroscopy and cyclic voltammetry. The monomers were synthesized from 3,4-ethylenedioxythien-2-yl or 3,4-ethylenedithiathien-2-yl trimethylstannane and 3,7-bis(4-bromophenyl)benzo[1,2-b:4,5-b']difuran-2,6-dione or 3,6-bis(4-bromophenyl)benzo[1,2-b:6,5-b']difuran-2,7-dione using Stile coupling. The polymers exhibit broad absorption bands, and strong donor-acceptor characteristics with very small band gaps (in a range from 0.40 to 1.20 eV). Electrochemically grown polymer thin films exhibit reversible behavior under oxidative and reductive conditions. Under reduction, the polymer films show color changes from dark to almost transparent.
|Keywords:||monomers , conjugated polymers , o-benzodifuranone , thiophene derivatives, Chemistry|
|Subjects:||Science > Chemistry|
|Department:||Faculty of Science > Pure and Applied Chemistry|
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|Depositing user:||Pure Administrator|
|Date Deposited:||07 Jun 2012 11:40|
|Last modified:||07 Dec 2013 04:09|
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