PHOTOLYSIS OF SOME ARYLALKYL THIOCYANATES, ISOTHIOCYANATES AND DISULFIDES IN RIGID GLASSES AT 77 K: FORMATION AND TRAPPING OF ARYLALKYL FREE RADICALS |
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| Authors: | G Favaro U Mazzucato |
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| Institution: | Institute of Physical Chemistry, University of Padova, Padova National Centre of Radiation Chemistry and Radioelements of the "Consiglio Nazionale delle Ricerche", Section III, Bologna |
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| Abstract: | Abstract Photolysis of benzyl and benzhydryl thiocyanates and of benzyl, benzhydryl and trityl isothiocyanates and disulfides has been studied in rigid glasses at liquid nitrogen temperature. Most intermediate and final products of photolysis have been identified by absorption and fluorescence spectroscopy. Evidence has been obtained for benzyl, diphenylmethyl and triphenylmethyl trapped radicals. A number of new luminescence bands of benzyl radical, in the 550–610 nm region, and the hitherto unknown lowest energy luminescence spectrum (doublet-doublet) of diphenylmethyl radical, are reported. |
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