Direct Measurement of Vertical Electron Binding Energies of Solvated Electrons in Methanol and Ethanol
Direct Measurement of Vertical Electron Binding Energies of Solvated Electrons in Methanol and Ethanol
复制标题
直接测量甲醇和乙醇中溶剂化电子的垂直电子结合能
DOI：
10.1246/cl.2010.668
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发表时间：
2010
影响因子：
1.6
通讯作者：
Toshinori Suzuki
中科院分区：
文献类型：
--
作者：
H. Shen;N. Kurahashi;T. Horio;K. Sekiguchi;Toshinori Suzuki
在超低动能的时间分辨光电子能谱应用于液体束的碘化钠溶液在甲醇和乙醇。溶剂化电子形成的I-离子在这些解决方案中的电荷转移到溶剂反应。首次测定了溶剂化电子的垂直电子结合能。结合能均为3.10 ± 0.1 eV。这与利用先前测量的水合电子的垂直结合能的溶剂化电子的介电连续模型是合理一致的，这表明溶剂化电子在水、甲醇和乙醇中的腔半径大致相同（0.33-0.35 nm）。
Time-resolved photoelectron spectroscopy at ultralow kinetic energy was applied to liquid beams of NaI solutions in methanol and ethanol. Solvated electrons were formed from I-ions in these solutions by charge transfer to solvent reactions. The vertical electron binding energies of the solvated electrons were determined for the first time. Both of the binding energies were found to be 3.10 ± 0.1 eV. This is in reasonable agreement with the dielectric continuum model of solvated electrons using the previously measured vertical binding energy of a hydrated electron. This indicates that the cavity radii of solvated electrons in water, methanol, and ethanol are approximately the same (0.33-0.35 nm).