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Photochemical-controlled switching based on azobenzene monolayer modified silicon (111) surface

  • Yongqiang Wen
  • , Wenhui Yi
  • , Lingjie Meng
  • , Min Feng
  • , Guiyuan Jiang
  • , Wenfang Yuan
  • , Yuqi Zhang
  • , Hongjun Gao
  • , Lei Jiang
  • , Yanlin Song
  • CAS - Institute of Chemistry
  • Xi'an Jiaotong University
  • CAS - Institute of Physics

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

Azobenzene-containing compounds were covalently attached onto Si(111) surfaces via Si-O linkages using a two-step procedure. The modified Si(111) surfaces were characterized by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectroscopy measurements. The monolayer surface showed preferably chemical stability. Switchable photoisomerizability of azobenzéne molecules on these modified surfaces was observed in response to alternating UV and visible light exposure. The measured conductivity showed distinct difference with trans and cis forms of azobenzene compounds on as-modified Si(111) surfaces.

Original languageEnglish
Pages (from-to)14465-14468
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number30
DOIs
StatePublished - 4 Aug 2005

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