Spatially Controlled Photoisomerizability of Azobenzene Moieties in Langmuir-Blodgett Monolayers of Ion-Paired Macrocyclic Amphiphiles
作者:
M. Nakagawa,
R. Watase,
K. Ichimura,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 344,
issue 1
页码: 113-118
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008023823
出版商: Taylor & Francis Group
关键词: azobenzene;Langmuir-Blodgett;monolayer;macrocyclic amphiphile;electrostatic interaction
数据来源: Taylor
摘要:
Monolayers of ternary ion-paired macrocyclic amphiphiles consisting of a tetracationic cyclophane and two kinds of sulfonate surfactants with an azobenzene unit and either a single or double long chain alkyl unit were prepared by a Langmuir-Blodgett technique to elucidate the structure/property relation between a free space surrounding an azobenzene moiety and photoisomerizability in monolayers. It was found that an azobenzene unit with a hexyl group needs a minimum occupied area of about 0.5 nm2for sufficientE/Zphotoisomerization.
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