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Multiple photosynthetic reaction centers composed of supramolecular assemblies of a zinc porphyrin dendrimer with pyridylnaphthalenediimide

Title
Multiple photosynthetic reaction centers composed of supramolecular assemblies of a zinc porphyrin dendrimer with pyridylnaphthalenediimide
Authors
Fukuzumi S.Ohkubo K.Saito K.Kashiwagi Y.Khoury T.Crossley M.J.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2011
Journal Title
Journal of Porphyrins and Phthalocyanines
ISSN
1088-4246JCR Link
Citation
vol. 15, no. 41590, pp. 1292 - 1298
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Multiple photosynthetic reaction centers have successfully been constructed using a supramolecular complex of zinc porphyrin dendrimer [D(ZnP) 16] with pyridylnaphthalenediimide (PyNIm) in benzonitrile. The apparent formation constant determined from the fluorescence quenching of the singlet excited state of porphyrin moieties by PyNIm is significantly larger than that determined from the UV-vis spectral change. This indicates that efficient energy migration occurs between the porphyrin units of the dendrimer prior to the electron transfer from the singlet excited state of zinc porphyrin to PyNIm. The charge-separated (CS) state has been successfully detected as the transient absorption spectrum in the laser flash photolysis. The CS lifetime of in the supramolecular complex of D(ZnP) 16 with PyNIm was determined to be 0.83 ms at 298 K. © 2011 World Scientific Publishing Company.
DOI
10.1142/S1088424611004178
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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