Laser-Initiated Shuttling of a Water Molecule Between H-Bonding Sites-Reference-Cited by-同舟云学术

Laser-Initiated Shuttling of a Water Molecule Between H-Bonding Sites

Published:2005-03-04 Issue:5714 Volume:307 Page:1443-1446
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Clarkson Jasper R.¹²,Baquero Esteban¹²,Shubert V. Alvin¹²,Myshakin Evgeniy M.¹²,Jordan Kenneth D.¹²,Zwier Timothy S.¹²

Affiliation:

1. Department of Chemistry, 560 Oval Drive, Purdue University, West Lafayette, IN 47907–2084, USA.

2. Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Abstract

The two-step laser excitation scheme of stimulated emission pumping (SEP) induces shifts of a single water molecule between two remote hydrogen bonding sites on trans -formanilide. This reaction can be initiated by selective excitation of either isomer (C O-bound or NH-bound) with different SEP excitation wavelengths. Energy ( E ) thresholds for isomerization in both directions have been measured [796 wave numbers ≤ E (C O→NH) ≤ 988 wave numbers and 750 wave numbers ≤ E (NH→C O) ≤ 988 wave numbers], and the energy difference D E between the C O-bound and NH-bound isomers was extracted (–238 wave numbers ≤ D E ≤ +192 wave numbers).

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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