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Control of Photoinduced Electron Transfer from Zinc‐Porphyrin to Methyl Viologen by Supramolecular Formation between Monoclonal Antibody and Zinc‐Porphyrin
Author(s) -
Harada Akira,
Yamaguchi Hiroyasu,
Okamoto Kazutake,
Fukushima Hiroyuki,
Shiotsuki Keizou,
Kamachi Mikiharu
Publication year - 1999
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1999.tb08139.x
Subject(s) - porphyrin , chemistry , zinc , photochemistry , viologen , electron transfer , photoinduced electron transfer , fluorescence , electron acceptor , organic chemistry , physics , quantum mechanics
Photoinduced electron transfer from tetrakis(4‐carboxy‐phenyl porphyrin)‐zinc complex (Zn‐TCPP) to an acceptor molecule (methyl viologen; MV 2+ ) has been found to be controlled by the complex formation of monoclonal antibody 03‐1 for the porphyrin (TCPP) and Zn‐TCPP. Although there are no ground‐state interactions between Zn‐TCPP and MV 2+ for a 2:1 complex of antibody 03‐1 and Zn‐TCPP, the fluorescence of Zn‐TCPP is quenched by the addition of MV 2+ . The Stern‐Volmer plots and emission lifetime studies show that there is a long‐range electron transfer through the antibody 03‐1.