The role of surface defects in large organic molecule adsorption:substrate configuration effects

Waldmann, Thomas and Nenon, Christina and Tonigold, Katrin and Hoster, Harry E. and Gross, Axel and Behm, R. Juergen (2012) The role of surface defects in large organic molecule adsorption:substrate configuration effects. Physical Chemistry Chemical Physics, 14 (30). pp. 10726-10731. ISSN 1463-9076

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Abstract

The role of the configuration of metal surface atoms in the interaction between individual large, planar organic molecules and a metal substrate was investigated by low-temperature scanning tunneling microscopy and density functional theory calculations, including a semi-empirical correction scheme to account for dispersion effects. As test case, we used the adsorption of the oligopyridine derivative 2-phenyl-4,6-bis(6-(pyridine-2-yl)-4-(pyridine-4-yl) pyridine-2-yl) pyrimidine (2,4'-BTP) on a stepped Ag(100) surface. Both experiment, via statistical evaluation of the adsorption site and orientation of 2,4'-BTP admolecules, and theory indicate distinct structural effects. The results are compared with the adsorption behavior of pyridine derivatives and benzene on metal surfaces. Consequences on the understanding of the interaction between heteroatoms or functional groups in large organic adsorbates and metal atoms in typical nano-scaled surface defects and hence of the interaction with more realistic metal surfaces are discussed.

Item Type:
Journal Article
Journal or Publication Title:
Physical Chemistry Chemical Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1606
Subjects:
ID Code:
72929
Deposited By:
Deposited On:
13 Feb 2015 13:39
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Nov 2020 12:38