Dynamics of electrons in ammonia cages: The discovery system of solvation

I. Ren Lee, Wonchul Lee, Ahmed H. Zewail

研究成果: 雜誌貢獻期刊論文同行評審

26 引文 斯高帕斯(Scopus)

摘要

Two centuries ago solvated electrons were discovered in liquid ammonia and a century later the concept of the solvent cage was introduced. Here, we report a real time study of the dynamics of size-selected clusters, n=20 to 60, of electrons in ammonia, and, for comparison, that of electrons in water cages. Unlike the water case, the observed dynamics for ammonia indicates the formation, through a 100 fs temperature jump, of a solvent collective motion in a 500 fs relaxation process. The agreement of the experimental results - obtained for a well-defined n, gated electron kinetic energy, and time delay - with molecular dynamics theory suggests the critical and different role of the kinetic energy and the librational motions involved in solvation.

原文英語
頁(從 - 到)83-88
頁數6
期刊ChemPhysChem
9
發行號1
DOIs
出版狀態已發佈 - 2008 一月 11

ASJC Scopus subject areas

  • 原子與分子物理與光學
  • 物理與理論化學

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