Monitoring the electrochemical transformation of an azobenzene-terminated alkanethiolate monolayer at gold by chemical force microscopy

Zhongyun Wu, Dong Dong, Hua Zhang, Huixin He, Zhongfan Liu

Research output: Contribution to journalArticle

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Abstract

Chemical Force Microscopy (CFM) was used to study the electrochemical behavior of azobenzene-terminated self-assembled monolayers (SAMs). Both the gold-coated AFM tip and the gold-coated silicon substrate were modified with a 4-((N-(2′-mercapto-ethyl)-amino) carbonyl) azobenzene monolayer. For such a system, only when the reduction/oxidation reaction of azobenzene group occurs, the adhesion force between the tip and sample shows a drastic change, demonstrating the ability of CFM in monitoring the electrochemical transformation of an azobenzene group.

Original languageEnglish (US)
Pages (from-to)305-308
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume337
DOIs
Publication statusPublished - Jan 1 1999

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Keywords

  • Chemical force microscopy
  • Self-assembled monolayers

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