THE CIDEP STUDY OF PHOTOLYZED P-BENZOSEMI QUINONE ANION-RADICAL IN MICELLAR MICROENVIRONMENT

The CIDEP spectra of photolyzed p-benzosemiquinone radical in differen t media have teen studied experimentally with the highly time resolved ESR spectrometer. in p-benzoquinone solution with ethylene glycol as solvent, emission lines from PBQH(.) (R)over dot(OH)(2) were obtained. With ethylene glycol and water mixture as solvent, the spectrum mainl y contained six lines from PBQH(.). With the addition of some surfacta nts (TX-100 and AOT)and increase of their concentration, the strength of PBQH(.) lines decreased gradually to such an extent as to disappear at last. At the same time, lines from PBQ(.-) appeared in the spectru m and increased gradually. On the basis of special properties of the m icroenvironment in which radicals lied, a polarization transference me chanism and some related physical chemical properties were discussed t o explain these experimental results.