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    Description

    Biological systems such as proteins, viruses, and DNA have been most often reported to be used as templates for the synthesis of functional nanomaterials, but the properties of widely available biopolymers, such as cellulose, have been much less exploited for this purpose. Here, we report for the first time that cellulose nanocrystals (CNC) have the capacity to assist in the synthesis of metallic nanoparticle chains. A cationic surfactant, cetyltrimethylammonium bromide (CTAB), was critical to nanoparticle stabilization and CNC surface modification. Silver, gold, copper, and platinum nanoparticles were synthesized on CNCs, and the nanoparticle density and particle size were controlled by varying the concentration of CTAB, the pH of the salt solution, and the reduction time.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Padalkar, Sonal; Capadona, J.R.; Rowan, S.J.; Weder, C.; Won, Yu-Ho; Stanciu, Lia A.; Moon, Robert J. 2010. Natural biopolymers: novel templates for the synthesis of nanostructures. Langmuir. 26(11): 8497-8502.

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    Keywords

    Nanotechnology, nanostructured materials, biopolymers, biosynthesis, cellulose, biotechnology, nanocrystals, crystalline cellulose, nanoparticles, surface active agents, silver, gold, platinum, copper, salts, heavy metals, cations, Tunicata, sea squirts, Styela, crystallization, nanometals, Cetyltrimethylammonium bromide, CTAB, surface properties, particle sizes.

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