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Issue 32, 2011
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V2O5nanowires with an intrinsic iodination activity leading to the formation of self-assembled melanin-like biopolymers

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Abstract

V2O5 nanowires act as biomimetic catalysts resembling vanadium haloperoxidases (V-HPO). The nanowires display iodinating activity as confirmed by a colorimetric assay using thymol blue (TB), UV/Vis spectrophotometry and mass spectrometry (FD-MS). In the presence of dopamine these nanowires catalyze the fast and efficient synthesis of melanin-like biopolymers under mild conditions (aqueous solution, neutral pH and room temperature). The resulting melanin-like biopolymer obtained by the V2O5 nanowire catalysts was characterized by scanning electron microscopy (SEM), X-ray diffraction, UV-Vis, FT-IR and electric conductivity resembling the natural biopolymer both in its chemical and morphological features. In addition, this synthetic biopolymer self-assembles into fibril-like structures by forming stacks due to π interactions between the aromatic rings.

Graphical abstract: V2O5 nanowires with an intrinsic iodination activity leading to the formation of self-assembled melanin-like biopolymers

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Supplementary files

Article information


Submitted
25 Apr 2011
Accepted
25 May 2011
First published
11 Jul 2011

J. Mater. Chem., 2011,21, 11923-11929
Article type
Paper

V2O5 nanowires with an intrinsic iodination activity leading to the formation of self-assembled melanin-like biopolymers

F. Natalio, R. André, S. A. Pihan, M. Humanes, R. Wever and W. Tremel, J. Mater. Chem., 2011, 21, 11923
DOI: 10.1039/C1JM11811K

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