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2. Tuning of the photoinduced charge transfer process in donor-acceptor 'double cable' copolymers

Author

LUZZATI S, MOZER A, DENK P, SCHARBER M. C, CATELLANI M, LUPSAC N. O, SEGURA J. L, MARTIN N, NEUGEBAUER H, SARICIFTCI N. S., GIACALONE, Francesco, Z. H. KAFAFI, P. A. LANE EDS., LUZZATI S, MOZER A, DENK P, SCHARBER M C, CATELLANI M, LUPSAC N O, GIACALONE F, SEGURA J L, MARTIN N, NEUGEBAUER H, SARICIFTCI N S, Luzzati, Silvia, Scharber, Marku, Catellani, Marinella, Lupsac, Natalia-Oxana, Giacalone, Francesco, Segura, José L., Martin, Nazario, Neugebauer, Helmut, and Sariciftci, N. Serdar

Subjects
Condensed Matter Physic, Conjugated system, Photochemistry, Anthraquinone, Photoinduced electron transfer, law.invention, chemistry.chemical_compound, law, Materials Chemistry, Molecule, Donor-acceptor alkylthiophene copolymer, Photoinduced charge transfer, Electron paramagnetic resonance, Mechanical Engineering, Electronic, Optical and Magnetic Material, Metals and Alloys, Settore CHIM/06 - Chimica Organica, Condensed Matter Physics, Acceptor, Electronic, Optical and Magnetic Materials, chemistry, Mechanics of Materials, Covalent bond, Polythiophene, Light-induced electron spin resonance, Photoinduced absorption
Abstract

The covalent linking of acceptor molecules to electron donating conjugated polymer is an approach for the development of new photoactive materials for the fabrication of organic photoelectric conversion devices. With this strategy we have designed a polyalkylthiophene copolymer series containing in the side chain anthraquinone molecules as electron acceptor. The peculiar features of the copolymers are the good processability and the ease in tailoring the content of acceptor moieties. Their potential use as photoactive materials is investigated in terms of the photoinduced charge transfer properties, studied by FTIR photoinduced absorption and Light Induced Electron Spin Resonance spectroscopies. The results indicate the photoinduced electron transfer from the polythiophene backbone to the anthraquinone substituents and its tunability by changing the content of acceptor molecules. The photovoltaic response of these polymers is also discussed.

Published
2004
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