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Enhanced growth of tellurium nanowires under conditions of macromolecular crowding

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Abstract

An unprecedented rate enhancement was observed in the wet-chemical synthesis of tellurium nanowires under crowded conditions of inert macromolecules. The synthesis was carried out at 105 °C using solutions of sodium tellurite (Na2TeO3) as a precursor, hydrazine (N2H4) as a reducing agent, and polyvinylpyrrolidone (PVP) as both a stabilizing and crowding agent. The PVP concentration was systematically varied between the dilute and crowding regimes up to 166 g l−1. The growth of the nanowires was monitored by measuring their size-dependent optical properties in the UV-Vis spectrum characterizing the size and morphology evolution of the nanowires and a coexisting phase of amorphous tellurium nanoparticles. The observed growth characteristics were interpreted in terms of non-specific structural organization of the crowded media due to the entropic-driven effects of space compartmentalization.

Graphical abstract: Enhanced growth of tellurium nanowires under conditions of macromolecular crowding

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Publication details

The article was received on 15 Feb 2017, accepted on 30 May 2017 and first published on 30 May 2017


Article type: Paper
DOI: 10.1039/C7CP01011G
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
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    Enhanced growth of tellurium nanowires under conditions of macromolecular crowding

    M. Hunyadi, Z. Gácsi, I. Csarnovics, L. Csige, A. Csik, L. Daróczi, R. Huszánk and Z. Szűcs, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP01011G

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