高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (11): 2090-2094.

• 研究论文 • 上一篇    下一篇

Ru-Fe异金属化合物及其在Au表面上SAM的电化学研究

李朝晖1,2, Fehlner T. P.2, 付贤智1   

  1. 1. 福州大学光催化研究所, 福州350002;
    2. U niver sity of N otr e D am e, N otre Dame 46556, U SA
  • 收稿日期:2003-11-24 出版日期:2004-11-24 发布日期:2004-11-24
  • 基金资助:

    国家自然科学基金(批准号:20301003);福建省青年科技创新基金(批准号:2003J011);福建省自然科学基金(批准号:E0410009);福建省教育厅科学基金(批准号:K03009);福州大学科技发展基金(批准号:2003-XQ-05);福州大学人才基金(批准号:XJY-0301)资助.

Electrochemistry of Ru-Fe Heterobimetallic Complexes and the SAM on Au Surface

LI Zhao-Hui1,2, Fehlner T. P.2, FU Xian-Zhi1   

  1. 1. Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China;
    2. University of Notre Dame, Notre Dame 46556, USA
  • Received:2003-11-24 Online:2004-11-24 Published:2004-11-24

摘要: 为使不对称Ru-Fe化合物能在表面上自组装形成单分子膜,对trans-RuCl(dppm)2(C≡CFc)[Fc=C5H4FeC5H5,dppm=(C6H5)2PCH2P(C6H5)2](1)进行修饰,得到Ru(dppm)2(C≡CFc)(C≡CPhOCH3)(2),[Ru(dppm)2(C≡CFc)(N≡CCH2CH2NH2)][PF6](3)和[Ru(dppm)2(C≡CFc)(N≡CCH2CH2NHC(O)·(CH2)10SH)][PF6](4),并详细研究了该系列化合物的电化学性质.循环伏安结果显示出Ru周围配体得失电子能力的差别,直接影响了Ru中心的氧化-还原性,但这种影响并没有通过共轭的炔键传递到二茂铁中的Fe中心.化合物4可以在Au表面上自组装形成稳定、有序的单分子膜.还利用循环伏安法研究了单分子膜的形成过程及其表面覆盖率.

关键词: 二茂铁, 钌, 异金属化合物, 循环伏安, 自组装单分子膜

Abstract: Heterobimetallic Ru-Fe complex trans-RuCl(dppm)2(C≡CFc)(1)(Fc=C5H4FeC5H5, dppm=(C6H5)2PCH2P(C6H5)2) was functionalized to give Ru(dppm)2(C≡CFc)(C≡CPhOCH3)(2), [Ru(dppm)2(C≡CFc)(N≡CCH2CH2NH2)][PF6](3) and[Ru(dppm)2(C≡CFc)(N≡CCH2CH2NH·C(O)(CH2)10SH)][PF6](4) for surface binding. Cyclic voltametric techniques were performed on these complexes to study the extent of perturbation of the surface binding “tail” on the overall electrochemical peroperties. It is found that the substituent on the Ru center adjusts the electron density on the Ru atom and affects the redox properties of the Ru center. However, this substituent effect is not transferred through the acetylene bond to the ferrocenyl moiety. Complex 4 forms a stable and order SAM on the Au surface and CV was used to study the film growth and surface coverage.

Key words: Ferrocene, Ruthenium, Heterobimetallic complex, CV, Self-assembly monolayer(SAM)

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