Theory of photoinduced charge transfer in weakly coupled donor-acceptor conjugated polymers: application to an MEH-PPV:CN-PPV pair

Abstract

In a pair of coupled donor-acceptor conjugated polymer chains, it is possible for an exciton photoexcited on either polymer to decay into a hole in the donor polymer's valence band and an electron in the conduction band of the acceptor polymer. We calculate the corresponding exciton decay rate and its dependence on inter-polymer distance. For a pair of derivatives of poly(phenylene vinylene), PPV, specifically poly[2-methoxy, 5-(2${}^{\prime }$-ethyl-hexyloxy)-1, 4 PPV], MEH-PPV, and poly(2,5-hexyloxy $p$-phenylene cyanovinylene), CN-PPV, at a separation of 6 Åthe characteristic decay time is 2.2 ps, whereas at 4 Åit is $\sim 50$ fs.

arXiv comment9 pages, RevTeX, 4 PS files, to be published in a special issue of Chem. Phys

References in corpus (1)

• Effect of interchain coupling on conducting polymer luminescence: excimers in derivatives of poly(phenylene vinylene)

Cited by in corpus (1)

• Exciton Regeneration at Polymeric Semiconductor Heterojunctions