Isomerization of Diphenyl Polyenes. Part II. Fluorescence Properties of 1,8-Diphenyl-1,3,5,7-octatetraene in Poly (vinyl alcohol) Film

A. Kawski, A. Kubicki, B. Kukliński, I. Gryczyński, Z. Gryczyński

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12 Scopus citations

Abstract

The effect of temperature on the fluorescence properties of 1,8-diphenyl-1,3,5,7-octatetraene (DPO) in poly(vinyl alcohol) film (PVA) was investigated in the range from 295 to 428 K. Upon heating above 353 K, the quantum yield of DPO increases rapidly. This effect is irreversible, similarly as the optical density in the long wavelength absorption band (320–440 nm). It has its origin in the cis-trans conversion of DPO molecules in PVA film at high temperatures. The behaviour of the fluorescence anisotropy in the same temperature range was also investigated. The emission anisotropy was found to be a viscosity indicator in the microenvironment of the DPO molecules in PVA film.

Original languageEnglish
Pages (from-to)1017-1022
Number of pages6
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume47
Issue number10
DOIs
StatePublished - 1 Oct 1992

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