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Step‐Mediated Anisotropic Adsorption and Condensation of tert ‐Butylamine on Cu(111)
Author(s) -
Chen Yumin,
Deng Ke,
Qiu Xiaohui,
Wang Chen
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200900595
Subject(s) - adsorption , density functional theory , scanning tunneling microscope , molecule , butylamine , condensation , intermolecular force , chemical physics , anisotropy , chemistry , computational chemistry , surface diffusion , diffusion , crystallography , materials science , nanotechnology , thermodynamics , organic chemistry , amine gas treating , physics , quantum mechanics
Scanning tunneling microscopy (STM) combined with density functional theory (DFT) calculations were applied in studying the anisotropic adsorption and condensation of tert ‐butylamine ( t ‐BA) molecules in the vicinity of the steps on the Cu(111) surface. The preferential adsorption at the upper step edges and uneven distribution of t ‐BA in the vicinity of the steps illustrate the asymmetric electronic structure of the surface steps. Our observation demonstrates that the adsorption and diffusion of a polar molecule would be significantly mediated by steps on metal surfaces due to the molecule–step interaction and the intermolecular interactions.