论文信息 - OPTICAL AND ESR STUDIES ON TRIPHENYLIMIDAZOLYL RADICALS PRODUCED BY PHOTOLYSIS AND RADIOLYSIS AT LOW TEMPERATURE.

OPTICAL AND ESR STUDIES ON TRIPHENYLIMIDAZOLYL RADICALS PRODUCED BY PHOTOLYSIS AND RADIOLYSIS AT LOW TEMPERATURE.

The characteristic temperature-dependent behavior exhibited by the solution of the photochromic dimer of triphenylimidazolyl (photo-dimer) has been reinvestigated by means of optical and ESR spectroscopy. Assuming two conformations for triphenylimidazolyl radical, the spectral change at low temperatures has been elucidated in terms of a conformational isomerization of the radical and dimerization of the radical to a colorless dimer. Photo-dimer in γ-irradiated glassy solutions undergoes a dissociative electron attachment to produce triphenylimidazolyl radical and its anion.

Taro Hayashi | K. Maeda | T. Shida

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