Alkylation of Gold Surface by Treatment with C18H37HgOTs and Anodic Hg Stripping

详细信息    查看全文

• 作者：Malgorzata Mucha ; Eva Kaletov谩 ; Anna Kohutov谩 ; Frank Scholz ; Elizabeth S. Stensrud ; Ivan Stibor ; Lubom铆r Posp铆拧il ; Florian von Wrochem ; Josef Michl
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：April 17, 2013
• 年：2013
• 卷：135
• 期：15
• 页码：5669-5677
• 全文大小：433K
• 年卷期：v.135,no.15(April 17, 2013)
• ISSN：1520-5126

文摘

Treatment of a gold surface with a solution of C₁₈H₃₇HgOTs under ambient conditions results in the formation of a covalently adsorbed monolayer containing alkyl chains attached directly to gold, Hg(0) atoms, and no tosyl groups. It is stable against a variety of chemical agents. When the initial deposition is performed at a positive applied potential and is followed by oxidative electrochemical stripping, the mercury can be completely removed, leaving a gold surface covered only with alkyl chains. The details of the attachment structure are not known. The conclusions are based on infrared spectroscopy, X-ray and UV photoelectron spectroscopy, ellipsometry, contact angle goniometry, differential pulse polarography, and measurements of electrode blocking and electrochemical admittance.