Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Donor-acceptor conjugated polymers based on p- and o-benzodifuranone and thiophene derivatives: electrochemical preparation and optical and electronic properties

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 0024-9297

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

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.