高等学校化学学报

高等学校化学学报

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Pt4(OCOCH3)4(OCOCH=CH2)4的合成及其在n型单晶硅表面的嫁接与组装

徐庆红, 魏亚波, 赵钰雪   

  1. 北京化工大学化工资源有效利用国家重点实验室, 北京 100029
  • 收稿日期:2007-01-11 修回日期:1900-01-01 出版日期:2007-10-10 发布日期:2007-10-10
  • 通讯作者: 徐庆红

Synthesis of Pt4(OCOCH3)4(OCOCH=CH2)4 and Its Assembly and Grafting on n-Si(111) Crystalline Surface

XU Qing-Hong*, WEI Ya-Bo, ZHAO Yu-Xue   

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2007-01-11 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10
  • Contact: XU Qing-Hong

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摘要： 利用羧基取代法, 通过化合物Pt4(OCOCH3)8与过量的丙烯酸作用合成了配合物Pt4(OCOCH3)4(OCOCH=CH2)4. 晶体结构研究结果表明, 化合物Pt4(OCOCH3)8中的4个乙羧基能够被烯丙羧基有规律地选择性替换, 从而形成一个含双键的对称铂配合物. 利用Si—H与不饱和键的加成性质将该配合物嫁接到氢化n型单晶硅(111)表面, 发现配合物Pt4(OCOCH3)4(OCOCH=CH2)4除了能嫁接到单晶硅表面外, 还能在n型单晶硅表面进行自组装而形成许多岛状纳米粒子, 这种组装体系具有良好的热稳定性和一定的抗酸性.

关键词: 铂配合物, 单晶, n型单晶硅, 嫁接, 岛状粒子

Abstract: A platinum complex, Pt4(OCOCH3)4(OCOCH=CH2)4, was synthesized by the reaction of Pt4(OCOCH3)8 with acrylic acid in dichloromethane as solvent, four equatorial acetate ligands in Pt4(OCOCH3)8 were selectively replaced by acrylates. At the same time, n-Si(111) crystalline was modified by this complex and many island-like particles were formed on the silicon wafer. Characterizations of XPS as well as SEM and FTIR spectrum reveal that the platinum clusters close to the wafer covalently connected to silicon in Si—C bonds and the assembly is stable at a high temperture and in some acidic solutions.

Key words: Platinum complex, Single crystal, n-Si(111) crystalline, Grafting, Island-like particle

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