Photoswitching of electron transfer property of diarylethene-viologen linked molecular layer constructed on a hydrogen-terminated Si(111) Surface

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Article

Masuda, Takuya^1,2  Irie, Masahiro³  Uosaki, Kohei^1,2,4 

[1] Hokkaido Univ, Grad Sch Sci, Div Chem, Phys Chem Lab, Sapporo, Hokkaido 0600810, Japan

[2] Hokkaido Univ, Grad Sch Sci, Network Ctr Mol & Syst Life Sci, Sapporo, Hokkaido 0600810, Japan

[3] Kyushu Univ, Grad Sch Engn, Dept Chem & Biochem, Higashi Ku, Fukuoka 8128581, Japan

[4] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton Satellite MANA, Sapporo, Hokkaido 0600810, Japan

关键词: Hydrogen terminated Si(111);    Photoswitching;    Electron Transfer;    Diarylethene;    Viologen;    Molecular layer;   

DOI  :  10.1016/j.tsf.2009.07.035

来源: Elsevier

【 摘 要 】

An organic monolayer with diarylethene and viologen moieties as a photochromic and an electroactive group, respectively, was constructed on a hydrogen-terminated Si(111) surface by sequential surface reactions. Photoswitching behaviour of electron transfer from the Si electrode to viologen moiety, larger and smaller current after UV and visible irradiation, respectively, was observed. This photoswitching behaviour can be explained by a change in molecular conductivity of diarylethene moiety, which separates Si surface and viologen moiety, as a result of ring closing and opening induced by UV and visible irradiation, respectively. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free