THE EFFECT OF A PERMANENT ELECTRIC FIELD ON THERMOLUMINESCENCE OF CHLOROPLASTS

Peter P. Knox, Gyozo I. Garab

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Abstract— The effect of a permanent electric field on the thermoluminescence (TL) of pea chloroplasts was studied. The field was applied to suspensions at lowtemperatures(–15 to ‐40oC) and to dry films of various humidity. A permanent electric field increased TL at low temperatures at the expense of the peaks above OAoC. When the field strength was high, an increase in the quantum yield could be observed. When a field was applied at ‐15OC, the band around +10oC was reduced preferentially, but when a field was applied at – 40AoC, TL bands emitted above OAoC decreased to a similar extent. Analogies between the behaviour of solid suspensions and dry films of various humidity, and the isotope effect with D2O, indicated that the efficiency and mode of action of an electric field on TL depends on the conformational mobility of the microsurroundings of the traps in the membrane.

Original languageEnglish
Pages (from-to)733-736
Number of pages4
JournalPhotochemistry and photobiology
Volume35
Issue number5
DOIs
Publication statusPublished - May 1982

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

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