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THE EFFECT OF A PERMANENT ELECTRIC FIELD ON THERMOLUMINESCENCE OF CHLOROPLASTS
Author(s) -
Knox Peter P.,
Garab Gyozo I.
Publication year - 1982
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.1751-1097.1982.tb02637.x
Subject(s) - electric field , thermoluminescence , humidity , field (mathematics) , analytical chemistry (journal) , materials science , field strength , chemistry , luminescence , physics , optoelectronics , environmental chemistry , thermodynamics , magnetic field , mathematics , quantum mechanics , pure mathematics
— 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 ‐40 o C) and to dry films of various humidity. A permanent electric field increased TL at low temperatures at the expense of the peaks above OA o C. When the field strength was high, an increase in the quantum yield could be observed. When a field was applied at ‐15 O C, the band around +10 o C was reduced preferentially, but when a field was applied at – 40 Ao C, TL bands emitted above OA o C decreased to a similar extent. Analogies between the behaviour of solid suspensions and dry films of various humidity, and the isotope effect with D 2 O, 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.