Issue 24, 2009
From the journal:

Journal of Materials Chemistry

Facile formation of single crystalline Pt nanowires on a substrate utilising lyotropic liquid crystals consisting of cationic surfactants†

Azusa Takai,a   Yusuke Yamauchi*abc  and  Kazuyuki Kuroda*a  

* Corresponding authors

a Faculty of Science & Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo, Japan
E-mail: kuroda@waseda.jp
Fax: +81 (0)3 5286 3199
Tel: +81 (0)3 5286 3199

b World Premier International (WPI) Research Center, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Ibaraki, Japan
E-mail: YAMAUCHI.Yusuke@nims.go.jp
Fax: +81 (0)29 860 4706
Tel: +81 (0)29 860 4635

c PRESTO, Japan Science and Technology Agency (JST), Chiyoda-ku 3-5, Tokyo, Japan

Abstract

Single crystalline Pt nanowires about 2 nm in diameter with high-aspect ratios are successfully formed over the entire area of glass substrates by utilising lyotropic liquid crystals (LLC) containing cationic surfactants and Pt species. After the LLC films are coated on the substrates by spin-coating, the Pt species are reduced in the presence of the LLC films with an aqueous solution of sodium borohydride. Each Pt nanowire, which is well adhered to the substrate surface, is single crystalline because the nanowires are deposited in LLC films consisting of cationic surfactants acting as a capping agent. In this article, we propose a new role for LLC coated on substrates that provides a reaction field near the surface of substrates and contributes to the anisotropic growth of Pt nanowires.

Graphical abstract: Facile formation of single crystalline Pt nanowires on a substrate utilising lyotropic liquid crystals consisting of cationic surfactants

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Article information

DOI
https://doi.org/10.1039/B901663E
Article type
Paper
Submitted
26 Jan 2009
Accepted
03 Apr 2009
First published
12 May 2009

J. Mater. Chem., 2009,19, 4205-4210

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Facile formation of single crystalline Pt nanowires on a substrate utilising lyotropic liquid crystals consisting of cationic surfactants

A. Takai, Y. Yamauchi and K. Kuroda, J. Mater. Chem., 2009, 19, 4205 DOI: 10.1039/B901663E

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