Postformation Modification of SAMs: Using Click Chemistry to Functionalize Organic Surfaces

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• 作者：Rolf Chelmowski ; Daniel Kfer ; Stephan David Kster ; Tim Klasen ; Tobias Winkler ; Andreas Terfort ; Nils Metzler-Nolte ; Christof Wll
• 刊名：Langmuir
• 出版年：2009
• 出版时间：October 6, 2009
• 年：2009
• 卷：25
• 期：19
• 页码：11480-11485
• 全文大小：885K
• 年卷期：v.25,no.19(October 6, 2009)
• ISSN：1520-5827

文摘

We have investigated a recently established strategy of modifying organic surfaces exposed by thiolate SAMs (self-assembled monolayers) deposited on Au substrates by employing so-called click chemistry. This term is used to denote a modified Huisgen 1,3-dipolar cycloaddition. We demonstrate the potential of this method by coupling ferrocene and azido acetic acid to alkyne/azide-terminated SAMs. After the surface reaction, the modified organic monolayers were analyzed using infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Under the conditions used in this study, only for the azide-terminated SAMs could successful grafting of the ferrocene be achieved whereas for the alkyne-terminated SAMs the spectroscopic studies reveal a rather low yield of the coupling reaction.