PHOTO-EXCITED TRIPLET STATE OF DIMERIC CHLOROPHYLL a IN 3-METHYLPENTANE RIGID MATRIX AT 77 K STUDIED BY FLASH PHOTOLYSIS |
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| Authors: | M. Hoshino M. Imamura K. Koike K. Kikuchi H. Kokubun |
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| Affiliation: | Solar Energy Research Group, The Institute of Physical and Chemical Research, Wako. Saitama 351, Japan;*Department of Chemistry, Faculty of Science, Tohoku University. Sendai. Miyagi 980, Japan |
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| Abstract: | Abstract— Flash photolysis studies of dimeric and monomeric chlorophyll a were carried out at 77 K. The triplet-triplet absorption spectrum of the dimeric chlorophyll a in 3-methylpentane at 77 K is interpreted as a sum of the spectra of chlorophyll a in the ground and triplet states. The dimeric chlorophyll a in the triplet state is considered to have the half-excited structure at 77 K without photodisaggregation owing to high viscosity of the solvent. |
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