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Synthesis and characterization of donor-acceptor perylene based copolymers

Published online by Cambridge University Press:  31 January 2011

Erika Kozma ,
Filomena Munno ,
Dariusz Kotowski ,
Fabio Bertini ,
Silvia Luzzati  and
Marinella Catellani
Erika Kozma
Affiliation:
erika.kozma@ismac.cnr.it, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
Filomena Munno
Affiliation:
filomena.munno@alice.it, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
Dariusz Kotowski
Affiliation:
darekkot@wp.pl, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
Fabio Bertini
Affiliation:
fabio.bertini@ismac.cnr.it, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
Silvia Luzzati
Affiliation:
silvia.luzzati@ismac.cnr.it, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
Marinella Catellani
Affiliation:
marinella.catellani@ismac.cnr.it, Consiglio Nazionale delle Ricerche, Istituto per lo Studio delle Macromolecole, Milano, Italy
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Abstract

Two donor-acceptor copolymers containing perylene diimide and oligothiophenes linked through triple bonds have been designed and synthesized by palladium catalyzed Sonogashira coupling reaction. The introduction of the triple bond spacer between the electron-acceptor perylene moieties and the electron donating oligothiophene moieties produces an extended conjugation along the main chain, and produces soluble and high molecular weight copolymers.The thermal, optical and electrochemical properties of these copolymers were examined. The HOMO-LUMO energy levels of these copolymers, along with the photoinduced charge transfer process, probed by photoluminescence quenching and by FTIR photoinduced absorption spectroscopy, in blends with poly(3-hexylthiophene) (P3HT), indicate that they are suitable materials for application as electron acceptor and n-type components in bulk heterojunction solar cells with P3HT.

Keywords

polymerpolymerizationphotovoltaic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1212: Symposium S – Organic Materials and Devices for Sustainable Energy Systems , 2009 , 1212-S08-08
Copyright
Copyright © Materials Research Society 2010

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