Binding and ordering of large organic molecules on an anisotropic metal surface:: PVBA on Pd(110)

被引：23

作者：

Weckesser, J

Barth, JV ^{[1
]}

Cai, CZ

Müller, B

Kern, K

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Expt, CH-1015 Lausanne, Switzerland

[2] Swiss Fed Inst Technol, Inst Quantenelekt, CH-8093 Zurich, Switzerland

[3] ETH BWB, CH-8952 Schlieren, Switzerland

[4] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

SURFACE SCIENCE | 1999年 / 431卷 / 1-3期

关键词：

adsorption kinetics; chemisorption; growth; large organic molecules; organic molecular beam epitaxy; palladium; scanning tunneling microscopy; surface structure; morphology;

D O I：

10.1016/S0039-6028(99)00455-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption and ordering characteristics of 4-trans-2-(pyrid-4-yl-vinyl) benzoic acid (PVBA) on a Pd(110) surface were investigated by variable temperature scanning tunneling microscopy, PVBA is a rigid organic molecule (m = 225 amu) designed for nonlinear optics, The molecules adsorb flat on the surface and bind diagonally to three neighbouring Pd-rows, which configuration is maintained at all submonolayer coverages, With the completion of the first monolayer a parquet pattern evolves, resulting from the fixed bonding geometry and space limitations. Monte Carlo simulations of the film growth confirm that the monolayer ordering is stochastic in nature, even if an extrinsic precursor mechanism is operative in the adsorption, The lateral interactions between adsorbed molecules and Pd steps or adatoms at the surface are weak. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：168 / 173

页数：6

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