期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 118, 期 1, 页码 468-475出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp410086b
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资金
- CONICET
- University of Buenos Aires
- Agencia Nacional de Promocion Cientifica y Tecnologica
Surface molecular self-assembly is a fast advancing field with broad applications in molecular electronics, sensing and advanced materials. Although a large number of practical systems utilize alkanethiols, there is increasing interest in alkylamine self-assembled monolayers (SAMs). In this article, the molecular and electronic structure of alkylamine SAMs on Au surfaces was studied. It was found that amine-terminated alkanes self-assemble, forming a compact layer with the amine headgroup interacting directly with the Au surface and the hydrocarbon backbone tilted by around 30 degrees with respect to the surface normal. The dense layers formed substantially decrease electron tunneling across the metal/solution interface and form a dipole layer with positive charges residing at the monolayer/vacuum interface.
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