期刊
SCIENCE
卷 294, 期 5545, 页码 1322-1325出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1064916
关键词
-
We produced gaseous hydrated clusters of sulfate and oxalate anions [SO42-- (H2O)(n) and C2O42-(H2O)(n) where n = 4 to 40]. Photoelectron spectra of these clusters revealed that the solute dianions were in the center of the water cluster, (H2O)(n) For small clusters, these spectra were characteristic of the respective solutes, but beyond the first solvation shell (n approximate to 12), features in the spectra from the solutes were diminished and a new feature from ionization of water emerged, analogous to bulk aqueous solutions. For large clusters with dimensions greater than 1 nanometer, the solute photoemission features disappeared and the spectra were dominated by the ionization of water as the solvent coverage increased. A smooth transition from gas-phase clusters to behavior of electrolyte solutions was clearly revealed, and the large solvated clusters can be used as molecular models to investigate the photophysics and chemistry of aqueous electrolyte solutions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据