Effect of CuCl2 concentration on the aggregation and mineralization of Tobacco mosaic virus biotemplate.

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TitleEffect of CuCl2 concentration on the aggregation and mineralization of Tobacco mosaic virus biotemplate.
Publication TypeJournal Article
Year of Publication2006
AuthorsLee, S-Y, Culver, JN, Harris, MT
JournalJ Colloid Interface Sci
Volume297
Issue2
Pagination554-60
Date Published2006 May 15
ISSN0021-9797
KeywordsCopper, Minerals, Nephelometry and Turbidimetry, Particle Size, Tobacco Mosaic Virus
Abstract

Aggregation of the biotemplates in mineralization processes is a considerable obstacle in preparing well-dispersed bio-inorganic hybrid materials. In this study, aggregation and mineralization of Tobacco mosaic virus (TMV) biotemplates were investigated as a function of the copper precursor (CuCl2) concentration. The mean hydrodynamic radius of TMV in an aqueous CuCl2 solution was determined by dynamic light scattering for the monitoring of the TMV aggregation. At CuCl2 concentration of 0.5 mM or higher, the mean hydrodynamic radius of TMV increased dramatically indicating aggregation of the TMV particles. Numerical calculations on the long-range interaction energy between parallel model TMV particles agreed with the experimental observations for the TMV aggregation. Mineralization of copper precursors on the TMV biotemplates was achieved only at the CuCl2 concentrations that induced considerable aggregation of the biotemplate. From the numerical calculations and experimental results, it was concluded that a dense copper cluster deposition cannot be achieved without aggregation of TMV templates.

DOI10.1016/j.jcis.2005.11.039
Alternate JournalJ Colloid Interface Sci
PubMed ID16364358