Pd-catalyzed coupling reaction on the organic monolayer: Sonogashira reaction on the silicon (1 1 1) surfaces

详细信息    查看全文

• 作者：Mengnan Qu ; Yuan Zhang ; Jinmei He ; Xiaoping Cao ; Junyan Zhang
• 关键词：Surface reaction ; Hydrogen-terminated silicon surfaces ; Sonogashira coupling reaction ; X-ray photoelectron spectroscopy
• 刊名：Applied Surface Science
• 出版年：2008
• 出版时间：30 December 2008
• 年：2008
• 卷：255
• 期：5, Part 2
• 页码：2608-2612
• 全文大小：187 K

文摘

Iodophenyl-terminated organic monolayers were prepared by thermally induced hydrosilylation on hydrogen-terminated silicon (1 1 1) surfaces. The films were characterized by ellipsometry, contact-angle goniometry, and X-ray photoelectron spectroscopy (XPS). To modify the surface chemistry and the structure of the monolayers, the Sonogashira coupling reaction was performed on the as-prepared monolayers. The iodophenyl groups on the film surfaces reacted with 1-ethynyl-4-fluorobenzene or the 1-chloro-4-ethynylbenzene under the standard Sonogashira reaction conditions for attaching conjugated molecules via the formation of CC bonds. It is expected that this surface coupling reaction will present a new method to modify the surface chemistry and the structure of monolayers.