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Fabrication of Inorganic Tubular Structures Using a Lipid Nanotube as a Template in Aqueous Solutions

Published online by Cambridge University Press:  01 February 2011

Qingmin Ji ,
Rika Iwaura ,
Masaki Kogiso  and
Toshimi Shimizu
Qingmin Ji
Affiliation:
qingmin-ji@aist.go.jp, National Institute of Advanced Industrial Science and Technology, Nanoarchitectonics Research Center, Tsukuba central 5, 1-1-1 Higashi,, Tsukuba, Ibaraki, 305-8565, Japan, 81-29-861-4682, 81-29-861-4545
Rika Iwaura
Affiliation:
r-iwaura@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanoarchitectonics Research Center (NARC), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
Masaki Kogiso
Affiliation:
m-kogiso@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanoarchitectonics Research Center (NARC), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
Toshimi Shimizu
Affiliation:
tshmz-shimizu@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Nanoarchitectonics Research Center (NARC), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
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Abstract

A secondary ammonium hydrochloride of the peptidic lipid, in which an L-prolyl-L-prolyl-L-proline fragment is coupled with an L-glutamate derivative carrying two long alkyl chains, self-assembles in water to form nanotube structures consisting of a single bilayer wall. Using this lipid nanotube as a template, we carried out the sol—gel transcription to metal oxide nanotubes from aqueous lipid nanotubes without solution catalysts. TEM analysis of the aqueous gel phase, coupled with electron energy-loss spectroscopy (EELS) revealed the presence of a high population of hybrid nanotube architectures with a well-defined lipid/silica interface and thus proved the success of structural transcription from the lipid nanotube template. Besides silica, when changing the lipid nanotube in aqueous solutions to an iced lipid nanotube as a template, we also succeeded in the transcription to transition metal oxide nanotubes (titanium oxide, tantalum oxide, vanadium oxide) was also succeeded. The weakly acidic and mildly catalytic headgroup of the lipid is responsible for the formation of the metal oxide on the surface of the lipid nanotube template.

Keywords

nanostructuresol-gelself-assembly
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 922: Symposium U – Organic and Inorganic Nanotubes – From Molecular to Submicron Structures , 2006 , 0922-U01-01
Copyright
Copyright © Materials Research Society 2006

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