Intramolecular Diffusive Motion in Alkane Monolayers Studied by High-Resolution Quasielastic Neutron Scattering and Molecular Dynamics Simulations

F. Y. Hansen, L. Criswell, D. Fuhrmann, K. W. Herwig, A. Diama, R. M. Dimeo, D. A. Neumann, U. G. Volkmann, H. Taub

Research output: Contribution to journalArticlepeer-review

Abstract

Molecular dynamics simulations of a tetracosane ([Formula presented]) monolayer adsorbed on a graphite basal-plane surface show that there are diffusive motions associated with the creation and annihilation of gauche defects occurring on a time scale of [Formula presented]. We present evidence that these relatively slow motions are observable by high-energy-resolution quasielastic neutron scattering (QNS) thus demonstrating QNS as a technique, complementary to nuclear magnetic resonance, for studying conformational dynamics on a nanosecond time scale in molecular monolayers.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Volume92
Issue number4
DOIs
StatePublished - 2004
Externally publishedYes

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