Back to Search Start Over

Exploration of electronically interactive cyclic porphyrin arrays

Authors :
Naoki Aratani
Atsuhiro Osuka
Takaaki Hori
Yasuyuki Nakamura
Source :
Journal of Organometallic Chemistry. 692:148-155
Publication Year :
2007
Publisher :
Elsevier BV, 2007.

Abstract

We have explored a variety of covalently and non-covalently assembled cyclic porphyrin arrays mainly as biomimetic models of light harvesting antenna in photosynthetic systems. The key reaction is Ag(I)-promoted coupling reaction of 5,15-diaryl zinc(II) porphyrin that provides a meso–meso linked diporphyrin. An advantage of this coupling reaction is its extremely easy extension to higher porphyrin arrays, since longer porphyrin arrays have practically the same reactivity as that of the monomer. On the basis of this strategy, we have prepared cyclic porphyrin arrays including directly meso–meso linked porphyrin rings CZ4 – CZ8 , large porphyrin wheels C12ZA and C24ZB , and three-dimensional porphyrin boxes D1 – D3 . Efficient excitation energy transfer along these cyclic porphyrin arrays has been revealed by the time-resolved transient absorption and fluorescence measurements.

Details

ISSN :
0022328X
Volume :
692
Database :
OpenAIRE
Journal :
Journal of Organometallic Chemistry
Accession number :
edsair.doi...........1014863325f1d5d21bc3ef252b3a081a
Full Text :
https://doi.org/10.1016/j.jorganchem.2006.08.044