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Journal of Nanomaterials
Volume 2015, Article ID 105157, 13 pages
Research Article

Crystallizing Vanadium Pentoxide Nanostructures in the Solid-State Using Modified Block Copolymer and Chitosan Complexes

1Departamento de Química, Facultad de Química, Universidad de Chile, La Palmeras 3425, Casilla Postal 653, Nuñoa, 780-0026 Santiago de Chile, Chile
2Universidad Autónoma de Chile, Instituto de Ciencias Aplicadas, El Llano Subercaseaux 2801, San Miguel, 780-0026 Santiago, Chile
3Department of Chemistry, University College Cork, Cork, Ireland
4Micro & Nanoelectronics Centre, Tyndall National Institute, Lee Maltings, Cork, Ireland

Received 7 December 2014; Revised 12 April 2015; Accepted 15 April 2015

Academic Editor: Subrata Kundu

Copyright © 2015 C. Diaz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A systematic study of the synthesis of V2O5 nanostructured materials using macromolecular PS-co-4-PVP(VCl3)y and chitosan·(VCl3)y complexes is presented. It is demonstrated that various coordination degrees of the metal into the polymeric chain specifically influence the product formation after pyrolysis. PS-co-4-PVP·(VCl3)y and chitosan·(VCl3)y complexes were prepared by simple coordination reaction of VCl3 with the respective polymer in molar ratios 1 : 1, 1 : 5, and 1 : 10 metal/polymer and characterized by elemental analysis, IR spectroscopy, and TGA/DSC analysis. Solid-state thermolysis of these precursors at several temperatures under air results in nanostructured V2O5 using all precursors. The size and shape of the nanostructured V2O5 depend on the nature of the polymer. For the chitosan·(VCl3)y precursors sub-10 nm nanocrystals are formed. The calcination process, involved in the preparation method, produces V2O5 with photoluminescence in the visible light region, suggesting the possible application in oxygen sensing devices.