高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (7): 1141.

• 论文 • 上一篇    下一篇

二茂铁硫醇自组装膜的电化学行为及其离子对效应

程广军, 于化忠, 邵会波, 夏南, 刘忠范   

  1. 北京大学化学与分子工程学院智能材料研究中心, 北京 100871
  • 收稿日期:1997-01-22 出版日期:1997-07-24 发布日期:1997-07-24
  • 通讯作者: 刘忠范.
  • 作者简介:程广军, 男, 24岁, 硕士研究生.
  • 基金资助:

    国家攀登计划资助

Electrochemistry Behavior and Ion-pair Effect of Ferrocene in Self-assembled Monolayers

CHENG Guang-Jun, YU Hua-Zhong, SHAO Hui-Bo, XIA Nan, LIU Zhong-Fan   

  1. Center for Intelligent Materials Research, College of Chemistry andMolecular Engineering, Peking University, Beijing 100871
  • Received:1997-01-22 Online:1997-07-24 Published:1997-07-24

摘要: 详细研究了10-二茂铁-1-癸硫醇(HSC10Fc)在金基底上形成的自组装单分子膜的电化学行为,发现HSC10Fc在金基底上能形成稳定的自组装膜,并且在0. 1mol/L的HCIO4溶液中表现出可逆的氧化还原行为,但其氧化还原峰的峰形和峰位极易受溶液中阴离子种类和浓度的影响. 考察了二茂铁自组装膜及通过后置换形成的二茂铁硫酸/十二烷基硫醇混合膜在混合电解液中的电化学行为,直接比较了两种不同阴离子与二茂铁阳离子的结合能力,

关键词: 二茂铁硫醇, 自组装膜, 电化学行为, 离子对效应, 混合组装膜

Abstract: Ferrocenylalkanethiol (HSC10Fc) can be self-assembled into a stable and repro-ducible monolayer on gold.The self-assembled monolayer(SAM) showed a reversible redoxbehavior in 0.1 mol/L HClO4 solution, while its voltammetric properties was influenced byboth type and concentration of the supporting electrolytes.On the basis of "ion pair" effect,a detailed experimental investigation was performed to evaluate the role of type and concen-tration of the different anions in determining the shapes and positions of the redox peaks.Atthe same time, the mixed monolayer of HSC10 Fc with HSC11 CH3 was prepared, whichshowed varied electrochemical behavior comparing to the pure monolayer.However, the ion-pair effect was the same as the pure monolayer.

Key words: Ferrocenylalkanethiol, Self-assembled monolayer, Electrochemistry behavior, Ion-pair effect, Self-assembled mixed monolayer

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