Experimental and theoretical studies of the effect of mass on the dynamics of gas/organic-surface energy transfer

The Journal of Chemical Physics
William A AlexanderDiego Troya

Abstract

The effect of mass on gas/organic-surface energy transfer is explored via investigation of the scattering dynamics of rare gases (Ne, Ar, and Kr) from regular (CH3-terminated) and omega-fluorinated (CF3-terminated) alkanethiol self-assembled monolayers (SAMs) at 60 kJmol collision energy. Molecular-beam scattering experiments carried out in ultrahigh vacuum and molecular-dynamics simulations based on high-accuracy potentials are used to obtain the rare-gases' translational-energy distributions after collision with the SAMs. Simulations indicate that mass is the most important factor in determining the changes in the energy exchange dynamics for Ne, Ar, and Kr collisions on CH3- and CF3-terminated SAMs at 60 kJmol collision energy. Other factors, such as changes in the gas-surface potential and intrasurface interactions, play only a minor role in determining the differential dynamics behavior for the systems studied.

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Citations

Mar 5, 2009·The Journal of Chemical Physics·William A AlexanderDiego Troya
Jul 28, 2015·Physical Chemistry Chemical Physics : PCCP·S PratiharW L Hase
Mar 15, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Y YamadaW W Hayes
Oct 5, 2010·Physical Chemistry Chemical Physics : PCCP·Bradford G Perkins, David J Nesbitt
Dec 13, 2012·Faraday Discussions·William A AlexanderTimothy K Minton
Dec 31, 2009·The Journal of Physical Chemistry. a·Bradford G Perkins, David J Nesbitt
May 2, 2014·The Journal of Physical Chemistry. B·Subha PratiharWilliam L Hase

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Methods Mentioned

BETA
infrared absorption spectrometry

Software Mentioned

SAM

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