HIGHLY MOBILE SOLVENT HOLES IN VISCOUS SQUALANE SOLUTIONS AS DETECTEDBY QUANTUM BEATS AND MARY SPECTROSCOPY TECHNIQUES

The quantum beats and magnetic field effect on the reaction yield spec troscopy techniques were employed to study the formation of diphenyl s ulfide radical cations in squalane solutions under ionizing irradiatio n. It is demonstrated that the precursors of diphenyl sulfide radical cations are short-lived primary solvent radical cations (holes) with t he electron spin resonance spectrum narrowed by the resonance charge t ransfer reaction. The rate constant of hole scavenging by diphenyl sul fide molecules was measured directly and amounts to 6.1 x 10(9) M-1 s( -1), exceeding the diffusion-controlled one several times. The obtaine d value is well in line with the data on pulse radiolysis of squalane solutions with optical monitoring of the highly mobile precursor, supp orting the hypothesis about the hole nature of the latter.