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POLARIZED PHOTOACOUSTIC SPECTRA OF PHYCOERYTHRIN and PHYCOCYANIN IN ANISOTROPIC POLYMER FILMS
Author(s) -
Frackowiak Danuta,
Hotchandani Surat,
BialekBylka G.,
Leblanc Roger M.
Publication year - 1985
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.1751-1097.1985.tb01611.x
Subject(s) - chromophore , fluorescence , absorption (acoustics) , materials science , analytical chemistry (journal) , phycocyanin , photoacoustic imaging in biomedicine , anisotropy , phycoerythrin , photochemistry , deuterium , chemistry , optics , chromatography , atomic physics , cyanobacteria , physics , flow cytometry , biology , bacteria , composite material , genetics
— Photoacoustic spectra (PAS) of biliproteins, namely, R‐phycoerythrin (PE) and C‐phycocyanin (PC) and their mixture in anisotropic and isotropic polyvinylalcohol (PVA) films were measured under the illumination with polarized and natural light. Also samples in deuterated PVA were investigated. The yields of fluorescence of various chromophores of investigated biliproteins were obtained from PAS, absorption, fluorescence and fluorescence lifetime measurements. The deuteration of samples causes different changes in thermal deactivation of excitation of various chromophores. Ratios of PAS to absorption of the light polarized parallel and perpendicular to the direction of film stretching are different. The PAS amplitude of deuterated samples is higher than that for undeuterated.