POLARIZED PHOTOACOUSTIC SPECTRA OF PHYCOERYTHRIN and PHYCOCYANIN IN ANISOTROPIC POLYMER FILMS

Danuta Frackowiak, Surat Hotchandani, G. Bialek‐Bylka, Roger M. Leblanc

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Abstract— 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.

Original languageEnglish (US)
Pages (from-to)567-572
Number of pages6
JournalPhotochemistry and Photobiology
Volume42
Issue number5
DOIs
StatePublished - Nov 1985
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

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