SPECTROSCOPIC BEHAVIOUR OF RETINYL POLYENES IN SOLID FILMS

Surat Hotchandani, Roger M. Leblanc

Research output: Contribution to journalArticle

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Abstract

Abstract— The absorption spectroscopic study of retinyl polyenes, i.e. all‐trans retinal, 9‐cis retinal, 13‐cis retinal, all‐trans retinol, 13‐cis retinol and all‐trans retinyl acetate in solid films is discussed. The spectra of the films with low surface coverages obtained from dilute solutions are red shifted relative to their solution spectra. This shift is interpreted as due to the weak interaction between the surface and polyene molecules. With increased surface coverages, i.e. the films obtained from concentrated solutions, the retinals show a large red shift whereas a blue shift is observed with the retinols. Chromophore–chromophore interactions in addition to the surface effects are believed to be responsible for such observations. Effect of surface causing permanent changes in molecule is also discussed.

Original languageEnglish (US)
Pages (from-to)59-65
Number of pages7
JournalPhotochemistry and Photobiology
Volume24
Issue number1
DOIs
StatePublished - Jul 1976
Externally publishedYes

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ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

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