Morphological influences on the excited state dynamics of conjugated polymers

Abstract

A series of soluble phenylene vinylene copolymers have been prepared by four different methods. Two of these methods use the Wittig reaction in toluene and DMF, whereas the other two were prepared by the Horner reaction using the same two solvents. Morphology and chain conformations were found to be highly dependent on the preparation method. In particular, the method of preparation was found to affect cis/trans vinylene bond ratio and also the molecular weight characteristics.