Pulse radiolysis study on temperature dependent absorption spectra and temporal behaviors of the yield of solvated electron in poly-alcohols

Lin, M.; Katsumura, Yosuke*; Muroya, Yusa*; Yamashita, Shinichi; Yan, Y.*; Hata, Kuniki ; Peng, J.

With a re-evaluation of the extinction coefficients of solvated electron in 1,2-ethanediol (12ED), 1,2-propanediol (12PD), 1,3-propanediol (13PD), and glycerol (GLY), the time-dependent radiolytic yields of the solvated electron in these diols from the picosecond to the microsecond time range are described. The radiolytic yield of solvated electron in these viscous solvents is found to be quite different from that in aqueous solution. The temperature dependent absorption spectra of the solvated electron in 12ED, 12PD, 13PD, and GLY have been also investigated. Very interestingly, the red-shift of the spectrum with increasing temperature corresponds very well with the spectral shift of electron solvation obtained by femtosecond laser photolysis.