Ultrafast excitation energy transfer in a blend of light-emitting conjugated polymers

Authors
Cerullo, G Graupner, W Lanzani, G Nisoli, M List, EJW Stagira, S De Silvestri, S Leising, G
Citation
G. Cerullo et al., Ultrafast excitation energy transfer in a blend of light-emitting conjugated polymers, SYNTH METAL, 101(1-3), 1999, pp. 306-307
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
101
Issue
1-3
Year of publication
1999
Pages
306 - 307
Database
ISI
SICI code
0379-6779(199905)101:1-3<306:UEETIA>2.0.ZU;2-K
Abstract
We applied femtosecond pump-probe spectroscopy to a guest-host system of co njugated polymers, the blue-emitting poly(para-phenylene) (m-LPPP) and the red-emitting poly(perylene-co-diethynylbenzene) (PPDB). Excitation energy t ransfer between m-LPPP and PPDB, monitored by the formation of the PPDB pho tobleaching band at 2.15 eV, takes place on a picosecond time scale. The no nexponential kinetics of the excitation energy transfer and its dependence on acceptor (PPDB) concentration provide clear evidence for a Forster-type energy transfer.