烷基膦酸在SS316L原生氧化物表面形成自组装单分子层。

Formation of self-assembled monolayers of alkylphosphonic acid on the native oxide surface of SS316L.

作者信息

Raman Aparna, Dubey Manish, Gouzman Irina, Gawalt Ellen S

机构信息

Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA.

出版信息

Langmuir. 2006 Jul 18;22(15):6469-72. doi: 10.1021/la060636p.

DOI:10.1021/la060636p

PMID:16830984

Abstract

Phosphonate-steel interactions have been industrially significant for decades, but details of the phosphonate-steel interface have not yet been characterized. Self-assembled monolayers of phosphonic acids were formed on stainless steel 316L by room-temperature solution deposition. The acids are covalently bound to the surface as phosphonates in a bidentate manner, as determined by diffuse reflectance Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Complete coverage of the surface is confirmed by contact angle measurement and atomic force microscopic imaging. This method of monolayer formation contrasts the requirement for heating and long reaction times found to be necessary to form phosphonate monolayers on other metal oxide substrates, such as titanium and silicon.

摘要

几十年来，膦酸盐与钢的相互作用在工业上一直具有重要意义，但膦酸盐与钢界面的细节尚未得到表征。通过室温溶液沉积在316L不锈钢上形成了膦酸自组装单分子层。通过漫反射傅里叶变换红外光谱和X射线光电子能谱确定，这些酸以双齿方式作为膦酸盐共价结合到表面。通过接触角测量和原子力显微镜成像证实了表面的完全覆盖。这种单分子层形成方法与在其他金属氧化物基底（如钛和硅）上形成膦酸盐单分子层所需的加热和长时间反应形成对比。