Photoinduced electron transfer reactions in mixed films of π-conjugated polymers and a homologous series of tetracyano- p -quinodimethane derivatives

The photoexcitation of poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] and poly[3-(2-(3-methylbutoxy)ethyl)thiophene] in composite films with a series of tetracyano-p-quinodimethane derivatives containing fused aromatic rings as acceptors and compare results of the photophysical studies with those obtained with C sub(60). The photoinduced electron transfer efficiency depends on the reduction potential of these acceptor molecules. The quenching of luminescence as well as the intersystem crossing of the conjugated polymer donors show a maximum as function of the reduction potential of the acceptor.