Author/Authors :
Tang، نويسنده , , Shi-Ying and Suzuki، نويسنده , , Yoshi-ichi and Shen، نويسنده , , Huan and Sekiguchi، نويسنده , , Kentaro and Kurahashi، نويسنده , , Naoya and Nishizawa، نويسنده , , Kiyoshi and Zuo، نويسنده , , Peng and Suzuki، نويسنده , , Toshinori، نويسنده ,
Abstract :
Time-resolved photoelectron spectroscopy (TR-PES) of ultrafast dynamics in solution is presented. To measure the photoelectron kinetic energy distribution (PKED) that is free from inelastic scattering in solution, photoelectrons were generated with ultra-low kinetic energies (ULKE: <5 eV). Time constants of the elementary processes in the charge-transfer-to-solvent (CTTS) reaction from I− to bulk water were in excellent agreement with those obtained by transient absorption spectroscopy, demonstrating the bulk-sensitivity of TR-PES-ULKE. The analysis suggests that the CTTS reaction proceeds via two intermediates, and that 30% of the first intermediate and 70% of the second intermediate respectively are quenched by geminate recombination between the electron and the neutral iodine atom.
