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Dynamics of Electrons in Ammonia Cages: The Discovery System of Solvation

Lee, I-Ren and Lee, Wonchul and Zewail, Ahmed H. (2008) Dynamics of Electrons in Ammonia Cages: The Discovery System of Solvation. ChemPhysChem, 9 (1). pp. 83-88. ISSN 1439-4235. doi:10.1002/cphc.200700562. https://resolver.caltech.edu/CaltechAUTHORS:20160816-095603021

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Abstract

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/cphc.200700562DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/cphc.200700562/abstractPublisherArticle
Additional Information:© 2008 WILEY-VCH Verlag GmbH & Co. Received: September 25, 2007. Published online on November 23, 2007. Version of Record online: 23 Nov 2007. This work was financially supported by the National Science Foundation and the Air Force Office of Scientific Research.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Subject Keywords:ammonia clusters femtochemistry photoelectron spectroscopy solvated electrons
Issue or Number:1
DOI:10.1002/cphc.200700562
Record Number:CaltechAUTHORS:20160816-095603021
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160816-095603021
Official Citation:Lee, I.-R., Lee, W. and Zewail, A. H. (2008), Dynamics of Electrons in Ammonia Cages: The Discovery System of Solvation. ChemPhysChem, 9: 83–88. doi: 10.1002/cphc.200700562
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69655
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:16 Aug 2016 20:59
Last Modified:11 Nov 2021 04:17

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