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New Donor–Acceptor Materials Based on Random Polynorbornenes Bearing Pendant Phthalocyanine and Fullerene Units
Author(s) -
de la Escosura Andrés,
MartínezDíaz M. Victoria,
Torres Tomás,
Grubbs Robert H.,
Guldi Dirk M.,
Neugebauer Helmut,
Winder Christoph,
Drees Martin,
Sariciftci N. Serdar
Publication year - 2006
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200600090
Subject(s) - phthalocyanine , romp , metathesis , photochemistry , quenching (fluorescence) , ring opening metathesis polymerisation , acceptor , polymerization , copolymer , polymer chemistry , chemistry , fluorescence , absorption (acoustics) , organic solar cell , materials science , polymer , organic chemistry , optics , physics , composite material , condensed matter physics
New donor–acceptor materials based on a polynorbornene framework to which both phthalocyanine and C 60 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 Pc⋅⋅⋅Pc interactions along the polymeric framework. As expected, the fluorescence quenching increases in the case of the polynorbornenes containing both Pc and C 60 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.