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Geoinspired synthetic chrysotile nanotubes

Published online by Cambridge University Press:  03 March 2011

N. Roveri ,
G. Falini ,
E. Foresti ,
G. Fracasso ,
I.G. Lesci  and
P. Sabatino
N. Roveri*
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
G. Falini
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
E. Foresti
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
G. Fracasso
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
I.G. Lesci
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
P. Sabatino
Affiliation:
Department of Chemistry “G. Ciamician”, Alma Mater Studiorum University of Bologna, I-40126 Bologna, Italy
*
a) Address all correspondence to this author. e-mail: norberto.roveri@unibo.it
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Abstract

Since the 1991 discovery of hollow cylindrical carbon-based unidimensional structures, the nanotubular form of matter has been thoroughly investigated leading to a wealth of literature. Their particular features are not limited to graphite but are common in many inorganic highly anisotropic two-dimensional layered compounds. The first non-mineral inorganic nanotubes, constituted of lamellar molybdenum and tungsten disulfides, were synthesized in 1992. Afterwards, a large number of inorganic nanotubes have been synthesized, opening the path to the development of nanoelectronics, due to their dielectric properties. The unique mineral phase that crystallizes with a tubular morphology is chrysotile, which has been tentatively used to prepare ultra-thin wires by filling its hollow nanodimensional core with a conductive material. To overcome its natural heterogeneity in composition, morphology, and structure, synthetic chrysotile-inspired nanotubes have been recently synthesized. These geoinspired nanotubes can be prepared with specific properties, finalized to focused achievements such as preparation of new quantum wires. The existing knowledge on the structural and physicochemical properties of mineral and synthetic chrysotile nanotubes is reviewed, with the aim of emphasizing their potential applications as nonlinear optical and conducting technological devices. Bibliography encompasses over one hundred references.

Keywords

Chemical synthesisCrystalNanostructure

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Type
Reviews
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Journal of Materials Research , Volume 21 , Issue 11 , November 2006 , pp. 2711 - 2725
Copyright
Copyright © Materials Research Society 2006

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