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Highly Organized Self-Assembled Monolayer and Multilayer Films of Titania Nanosheets

✍ Scribed by T. Tanaka; K. Fukuda; Y. Ebina; K. Takada; T. Sasaki

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
159 KB
Volume
16
Category
Article
ISSN
0935-9648

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✦ Synopsis

Highly organized monolayer and multilayer films of titania nanosheets have been fabricated via electrostatic self‐assembly of large‐sized sheets and subsequent ultrasonic treatment. Overlapped or crumpled portions of the nanosheets in an as‐deposited film are effectively trimmed upon ultrasonication in a tetrabutylammonium hydroxide solution, resulting in neat tiling of the nanosheets without gaps and extensive overlaps (see Figure).

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A self-assembled monolayer (SAM) of azo stillbazolium sandwiched between two conductive electrodes is shown. The upper and lower electrodes are doped silicon and a Hg drop, respectively, a confi guration often used for measuring the conductivity of SAMs and multilayers of hybrid organic and inorgani