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ABSORPTION AND FLUORESCENCE SPECTRA OF CHLOROPHYLL‐ a IN POLAR SOLVENTS AS A FUNCTION OF TEMPERATURE
Author(s) -
BALNY CLAUDE,
BRODY SEYMOUR S.,
HOA GASTON HUI BON
Publication year - 1969
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.1751-1097.1969.tb07312.x
Subject(s) - aqueous solution , chemistry , methanol , absorption spectroscopy , absorption (acoustics) , fluorescence , spectral line , analytical chemistry (journal) , alcohol , polar , dielectric , atmospheric temperature range , materials science , organic chemistry , thermodynamics , optics , physics , optoelectronics , astronomy , composite material
— 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.