Reversible interconversion of a divalent vanadium bronze between and quasi-1D structures. Academic Article uri icon

abstract

  • Charge fluctuations along the quasi-1D frameworks of M(x)V(2)O(5) bronzes have evinced much recent interest owing to the manifestation of colossal metal-insulator transitions and superconductivity. Depending upon the nature of the intercalating cation (M), distinctive geometries of the V(2)O(5) framework are accessible. Herein, we demonstrate an unprecedented reversible transformation between double-layered () and tunnel () quasi-1D geometries for nanowires of a divalent vanadium bronze, Ca(x)V(2)O(5) (x 0.23), upon annealing-induced dehydration and hydrothermally induced hydration. Such a facile hydration/dehydration-induced interconversion between two prominent quasi-1D structures (accompanied by a change in charge-ordering motifs) has not been observed in the bulk and is posited to result from the ease of propagation of crystallographic slip processes across the confined nanowire widths for the conversion and the facile diffusion of water molecules within the tunnel geometries for the reversion.

published proceedings

  • Inorg Chem

altmetric score

  • 0.5

author list (cited authors)

  • Marley, P. M., & Banerjee, S.

citation count

  • 21

complete list of authors

  • Marley, Peter M||Banerjee, Sarbajit

publication date

  • May 2012