Tuning of the photoinduced charge transfer process in donor-acceptor double-cable copolymers
- Autori: Luzzati, Silvia*; Scharber, Markus; Catellani, Marinella; Lupsac, Natalia-Oxana; Giacalone, Francesco; Segura, José L.; Martin, Nazario; Neugebauer, Helmut; Sariciftci, N. Serdar
- Anno di pubblicazione: 2003
- Tipologia: Articolo in rivista (Articolo in rivista)
- Parole Chiave: Donor-acceptor alkylthiophene copolymers; Light-induced electron spin resonance; Photoinduced absorption; Photoinduced charge transfer; Electronic, Optical and Magnetic Materials; Condensed Matter Physics;
- OA Link: http://hdl.handle.net/10447/286285
Abstract
We present a study on the photoinduced charge transfer properties of a series of alkylthiophene copolymers carrying anthraquinone type acceptor molecules covalently linked to the conjugated backbone. FTIR photoinduced absorption and light-induced electron spin resonance (LESR) experiments demonstrate the photoinduced electron transfer from the polythiophene backbone to the anthraquinone moieties. By changing the content of acceptor molecules, it is possible to tune the number of photogenerated charges as well as their lifetimes. Changes induced by the acceptors to the polythiophene properties are also observed and discussed. © 2003 Elsevier B.V. All rights reserved.