Molecular ordering and adsorbate induced faceting in the Ag{110}-(S)-glutamic acid system

被引：45

作者：

Jones, TE

Baddeley, CJ ^{[1
]}

Gerbi, A

Savio, L

Rocca, M

Vattuone, L

机构：

[1] Univ St Andrews, EsStCHEM Sch Chem, St Andrews KY16 9ST, Fife, Scotland

[2] Univ Genoa, Dipartimento Fis, CNR, IMEM, I-16146 Genoa, Italy

[3] Univ Genoa, Dipartimento Fis, CNISM, I-16146 Genoa, Italy

来源：

LANGMUIR | 2005年 / 21卷 / 21期

关键词：

D O I：

10.1021/la050414b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of the amino acid, (S)-glutamic acid, was investigated on Ag{110} as a function of coverage and adsorption temperature using the techniques of scanning tunneling microscopy, low energy electron diffraction, and reflection absorption infrared spectroscopy. In the monolayer, (S)-glutamic acid was found to adsorb predominantly in the anionic glutamate form. Several discrete ordered adlayer structures were observed depending on preparation conditions. In addition, (S)-glutamic acid was found to induce both one-and two-dimensional faceting of the Ag{101} surface. In some cases, evidence was found that the 2-D faceting involved the creation of a chiral facet distribution. A comparison is made of the Ag/(S)-glutamic acid system with analogous studies of amino acids on Cu.

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收藏

页码：9468 / 9475

页数：8

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