Long-lived triplet radical ion pair state of porphyrin-methylviologen combined systems as revealed by a large magnetic field effect on its lifetime.
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概要
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The external magnetic field effect on the lifetime of the ion pair state has been examined for the porphyrinmethylviologen combined systems in polar solvents by using nanosecond laser flash photolysis techniques. Applying the external magnetic field, a drastic increase in the lifetime has been observed. For PllMV<SUP>2+</SUP> in DMSO under the magnetic field of 50 mT, the ion pair lifetime was almost three times longer than the zero field value, which can be deemed the ideal case of the external magnetic field effect due to the hyperfine interaction mechanism. The results clearly showed that the long-lived ion pair was formed by the intramolecular electron transfer from the triplet state of porphyrin.
- 公益社団法人 日本化学会の論文
著者
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Hirata Yoshinori
Department Of Chemistry Faculty Of Science Kanagawa University
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Mataga Noboru
Department Of Chemistry Faculty Of Engineering Science Osaka University
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Sato Hisashi
Department Of Information And Computer Sciences Faculty Of Engineering Saitama University
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Yoshida Toshikatsu
Department Of Chemistry Faculty Of Integrated Arts And Sciences University Of Osaka Prefecture
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Saito Toshiro
Department of Chemistry, Faculty of Engineering Science, Osaka University
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Hirata Yoshinori
Department of Chemistry, Faculty of Engineering Science, Osaka University
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