Issue 18, 2012
From the journal:

Journal of Materials Chemistry

Directional freezing of liquid crystalline systems: from silver nanowire/PVA aqueous dispersions to highly ordered and electrically conductive macroporous scaffolds

Hernán E. Romeo,*a   Cristina E. Hoppe,a   M. Arturo López-Quintela,b   Roberto J. J. Williams,a   Yanina Minaberryc  and  Matías Jobbágyc  

* Corresponding authors

a Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata, Argentina
E-mail: hromeo@fi.mdp.edu.ar

b Departamento de Química Física, Facultad de Química, Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain

c Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

Abstract

Highly ordered hybrid metallic–polymeric assemblies were prepared by simultaneously combining two organization-directing tools: the liquid crystalline behavior of high aspect ratio silver nanowires (Ag-NWs) dispersed in poly(vinyl alcohol) (PVA) aqueous solutions and a cryogenic technique based on the directional freezing of the liquid crystal-like systems. This combination allowed us to render highly oriented Ag-NWs inside macroporous PVA scaffolds. As a consequence of the compact self-assembly of NWs into the structured composites, electrically conductive metallic–polymeric hybrid materials were obtained.

Graphical abstract: Directional freezing of liquid crystalline systems: from silver nanowire/PVA aqueous dispersions to highly ordered and electrically conductive macroporous scaffolds

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Article information

DOI
https://doi.org/10.1039/C2JM16329B
Article type
Paper
Submitted
03 Dec 2011
Accepted
05 Mar 2012
First published
30 Mar 2012

J. Mater. Chem., 2012,22, 9195-9201

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Directional freezing of liquid crystalline systems: from silver nanowire/PVA aqueous dispersions to highly ordered and electrically conductive macroporous scaffolds

H. E. Romeo, C. E. Hoppe, M. A. López-Quintela, R. J. J. Williams, Y. Minaberry and M. Jobbágy, J. Mater. Chem., 2012, 22, 9195 DOI: 10.1039/C2JM16329B

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