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Theoretical Insight into the Inelastic Electron Tunneling Spectra of an Anil Derivative
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology.
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2013 (English)In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 117, no 48, 12783-12795 p.Article in journal (Refereed) Published
Abstract [en]

First-principles simulations have been employed to simulate the inelastic electron tunneling (JET) spectra of the enol and keto forms of an anil molecular switch and to analyze them with respect to the character of the vibrational normal modes. When the molecules are sandwiched between Au plates, the dominant JET signatures appear at very similar voltages for both forms, but their intensities are clearly different, which makes JET an efficient technique to probe the molecular state of the switch. The JET-active modes are also similar for both anil forms and consist of in-plane molecular motions, CC and ring stretching, and C-H bending motions. Moreover, the JET activity of the vibrational modes specific to the enol and keto forms, i.e., those involving bending motions of the C-O-H and C-N-H groups, respectively, demonstrates that JET spectroscopy is an efficient technique to distinguish unambiguously between the two states of the keto/enol switch.

Place, publisher, year, edition, pages
2013. Vol. 117, no 48, 12783-12795 p.
Keyword [en]
First-principles simulations, IET spectroscopy, Inelastic electron tunneling, Inelastic electron tunneling spectra, Molecular motions, Molecular switches, Vibrational modes, Vibrational normal modes
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-139277DOI: 10.1021/jp408068dISI: 000328100800011Scopus ID: 2-s2.0-84890042515OAI: oai:DiVA.org:kth-139277DiVA: diva2:684813
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QC 20140108

Available from: 2014-01-08 Created: 2014-01-08 Last updated: 2017-12-06Bibliographically approved

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Luo, Yi

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