ABSORPTION AND FLUORESCENCE SPECTRA OF CHLOROPHYLL-a IN POLAR SOLVENTS AS A FUNCTION OF TEMPERATURE |
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| Authors: | CLAUDE BALNY SEYMOUR S BRODY GASTON HUI BON HOA |
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| Institution: | Institut de Biologie Physico-Chimique, Service de Biospectroscopie, 13 rue P. et M. Curie, Pans Ve |
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| Abstract: | Abstract— Absorption and fluorescence spectra of chlorphyll-a in aqueous alcohol were determined as a function of temperature between 173° and 293°K. From a comparison of these spectra with ones obtained in pure methanol, it is suggested that changes in molecular association occur within aggregates of chlorophyll-a in aqueous-alcoholic solution induced by variation of the dielectric constant. The latter varies over a wide range in aqueous alcohol as a function of temperature. |
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