title: Photochemical-controlled switching based on azobenzene monolayer modified silicon (111) surface.
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 azobenzene 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.
authors.affiliation: Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, China.
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Wen
authors.forename: Wenhui
authors.initials: W
authors.lastname: Yi
authors.forename: Lingjie
authors.initials: L
authors.lastname: Meng
authors.forename: Min
authors.initials: M
authors.lastname: Feng
authors.forename: Guiyuan
authors.initials: G
authors.lastname: Jiang
authors.forename: Wenfang
authors.initials: W
authors.lastname: Yuan
authors.forename: Yuqi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Hongjun
authors.initials: H
authors.lastname: Gao
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Song