Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto606-8502, Japan.
School of Medical Technology, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsucho, Ishikari, Hokkaido061-0293, Japan.
J Phys Chem Lett. 2023 Feb 2;14(4):1052-1058. doi: 10.1021/acs.jpclett.2c03849. Epub 2023 Jan 24.
Charge transfer reactions from I to solvent water, methanol, and ethanol were studied using extreme ultraviolet time-resolved photoelectron spectroscopy (EUV-TRPES). This technique eliminates spectral broadening, previously seen in UV-TRPES, caused by electron inelastic scattering in liquids, and enables clear observation of the temporal evolution of the spectral shape. The peak position, width, and intensity of the electron binding energy distribution indicate electron detachment and subsequent solvation and thermalization processes. Geminate recombination between detached electrons and iodine atoms is discussed using a diffusion equation and a global fitting analysis based on a kinetics model.
采用极紫外光时间分辨光电子能谱（EUV-TRPES）研究了 I 到溶剂水、甲醇和乙醇的电荷转移反应。该技术消除了先前在紫外光时间分辨光电子能谱（UV-TRPES）中观察到的由于液体中电子非弹性散射引起的光谱展宽，从而能够清晰地观察光谱形状的时间演化。电子结合能分布的峰值位置、宽度和强度表明了电子的脱附以及随后的溶剂化和热化过程。通过扩散方程和基于动力学模型的全局拟合分析讨论了脱附电子和碘原子之间的复合。
