Molecular switch on a metal surface

The Journal of Physical Chemistry. B
Bidisa Das, Shuji Abe

Abstract

We report a theoretical study for the conformational switching of molecules on Au(111) surface in the presence of an applied electric field. Ab initio calculations for N-(2-mercaptoethyl)benzamide indicate that this molecule, when adsorbed, can exist as two stable conformers of nearly equal energies, but the dipoles point in reverse directions with respect to the surface. An electric field can be used to "switch" one conformer to the other, and during this process, there is an abrupt change in the height of the molecule from the surface. This change is expected to cause a conductance switching in the system. Further calculations for N-(2-mercaptoethyl)-4-phenylazobenzamide suggest that the experimentally observed phase switching of this molecule is associated with a conformational change accompanied by dipole reversal.

References

Sep 15, 1988·Physical Review A: General Physics·A D Becke
Jun 20, 2001·Accounts of Chemical Research·A R PeaseJ R Heath
Jun 20, 2001·Accounts of Chemical Research·B L Feringa
Feb 2, 2002·Chemistry : a European Journal·Tetsuo AkasakaKoji Araki
Dec 6, 2002·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Yi LuoJames R Heath
Dec 6, 2002·Journal of the American Chemical Society·Alessandro Troisi, Mark A Ratner
May 31, 2003·Science·Ganesh K RamachandranStuart M Lindsay
Dec 25, 2003·Journal of the American Chemical Society·Satoshi YasudaHidemi Shigekawa
Mar 12, 2004·Journal of the American Chemical Society·Alessandro CembranGiorgio Orlandi
Jul 23, 2004·The Journal of Chemical Physics·Jun NaraTakahisa Ohno
Dec 18, 2004·Science·Amar H FloodJames R Heath
Dec 23, 2004·Accounts of Chemical Research·Andrea DeiLorenzo Sorace
Jan 18, 2005·Nature Materials·Amy Szuchmacher BlumBanahalli R Ratna
Sep 22, 2005·Angewandte Chemie·Kazuya KitagawaShunsaku Kimura
Jul 21, 2006·The Journal of Physical Chemistry. B·Alessandra Ricca, Charles W Bauschlicher

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Citations

Apr 22, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Ulrich JungOlaf Magnussen
Sep 17, 2011·ACS Nano·Changshui HuangPadma Gopalan
Sep 3, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Ulrich JungOlaf Magnussen
May 15, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·A Joseph RastegarBeth L Pruitt
Sep 21, 2007·The Journal of Physical Chemistry. B·Sairam S Mallajosyula, Swapan K Pati

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