Highly conjugated thiophene derivatives, based on thienylene vinylene and thienylene vinylene phenylene units, have been synthesized in order to examine: (i) the effect of such regular conjugated monomer structures on polymer formation; and (ii) the optical and electrochemical properties of the corresponding macromolecules. The all-trans monomers have been prepared by a Wittig reaction. The polymers have then been synthesized electrochemically. The polymers are electrochromic and can be reversibly doped both oxidatively and reductively. Their electrochemical behavior and optical properties have been analyzed on the basis of a series of quantum-chemical calculations.
Bibliographical noteFunding Information:
C.J. and C.M. thank the ‘Fonds de la Recherche pour 1’Industrie et l’agriculture’ (FRIA) for a fellowship. R.L. is chercheur qualifiB du Fonds National de la Recherche Scien-tifique (FNRS) . The authors are grateful to the ‘Services FCdBraux des Affaires Scientifiques, Techniques et Culturel-les’ for general support in the frame of the ‘P8les d’ Attraction Interuniversitaires: Polymbres et Catalyse, et Chimie Supra-molBculaire’. The collaboration between Mons and LiBge is partly supported by the European Commission (Human Capital and Mobility Network: Functional Materials Organized at Supramolecular Level) ; the work in Mons is also supported by FNRS-FRFC and an IBM Academic Joint study. We are also indebted to Professor B. Gilbert (University of Libge) for assistance with Raman spectroscopy and to Dr D. Beljonne (University of Mons) for providing the theoretical absorption spectrum of DTDVT.
- Conjugated polymers
- Dithienylene vinylene derivatives
- Electrochemical synthesis
- Electronic structure
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry