title: New donor-acceptor materials based on random polynorbornenes bearing pendant phthalocyanine and fullerene units.
abstract: New donor-acceptor materials based on a polynorbornene framework to which both phthalocyanine and C60 electroactive pendant units are randomly attached have been prepared in good yield by ring-opening-metathesis polymerization (ROMP) in the presence of a Grubbs catalyst. A structurally related phthalocyanine homopolymer was also synthesized for comparison. A remarkable fluorescence quenching was observed in the homopolymer and accounts for PcPc interactions along the polymeric framework. As expected, the fluorescence quenching increases in the case of the polynorbornenes containing both Pc and C60 units owing to photoinduced electron transfer, which was further confirmed by transient absorption spectroscopy. Finally, preliminary solar cell devices made of one of the copolymers were constructed.
authors: Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid.
authors: Andrés
authors: A
authors: de la Escosura
authors: M Victoria
authors: MV
authors: Martínez-Díaz
authors: Tomás
authors: T
authors: Torres
authors: Robert H
authors: RH
authors: Grubbs
authors: Dirk M
authors: DM
authors: Guldi
authors: Helmut
authors: H
authors: Neugebauer
authors: Christoph
authors: C
authors: Winder
authors: Martin
authors: M
authors: Drees
authors: N Serdar
authors: NS
authors: Sariciftci