Photoswitching of azobenzene derivatives formed on planar and colloidal gold surfaces

被引：182
作者：
Evans, SD [1 ]
Johnson, SR
Ringsdorf, H
Williams, LM
Wolf, H
机构：
[1] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
[2] Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany
来源：
LANGMUIR | 1998年 / 14卷 / 22期
关键词：
D O I：
10.1021/la980450t
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Azobenzene-derivatized alkanethiols have been used to form self-assembled monolayers on planar and colloidal gold substrates. Five derivatives were used allowing investigation of the effects of chain length, omega-functionality and a comparison of thiol versus disulfide. Single-component monolayer films, i.e., consisting only of the "azo"-derivatized thiols (disulfides), showed no evidence of photoswitching. However, "photoswitching" was observed in "mixed monolayers", in self-assembled multilayers, and on nanoparticles coated with mixed monolayers. The photoswitching was observed using surface plasmon resonance on the planar samples and by UV-vis spectroscopy from nanoparticle solutions.
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收藏
页码：6436 / 6440
页数：5
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