Electron transfer and solvation in 3-methylpentane-1-propanol mixtures γ-irradiated at 77 and 4 K

The trapped electron in 3-methylpentane-1-propanol mixtures γ-irradiated at 77 and 4 K was investigated by observing the evolution of the trapped electron spectra at 77 K by conventional spectrophotometric method. An isosbestic point observed during the spectral evolution indicated that almost all the electrons in 3-methylpentane traps transformed efficiently to those in 1-propanol traps at high concentration of 1-propanol (> 0.6 mol dm-3). Results were interpreted in terms of diffusional transfer of the electron or combined diffusion and tunneling mechanism. The electron spectra observed from the mixture irradiated at 4 K were different from the spectra for irradiation at 77 K: the former spectra were due to both shallowly-trapped alcoholated electrons and unrelaxed hydrocarbonated electrons. (author)