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Issue 19, 2009
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Growth of fibrous aggregates of silicananoparticles: Fibre growth by mimicking the biogenic silicapatterning processes

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Abstract

We describe the self-assembly of discrete SiO2 nanofibers via grafting of silicatein side chains to a polymer backbone. The covalent binding of silicatein to the backbone of the polymer is based on the affinity of the nitrilotriacetic acid (NTA) side chain, which serves as a ligand for the immobilization of His-tagged silicatein. The surface charge and the bulkiness of the protein moieties prevent the entropically favoured coil formation of the polymer and force it to adopt an open chain structure after hydrolysis of the silica precursors. The probes were characterized by scanning force microscopy (SFM) and optical light microscopy. Surface complexation of the resulting silica nanoparticles by the polymer-bound silicatein were analysed using high resolution tranmission electron microscopy (HRTEM).

Graphical abstract: Growth of fibrous aggregates of silica nanoparticles: Fibre growth by mimicking the biogenic silica patterning processes

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Supplementary files

Article information


Submitted
13 Mar 2009
Accepted
12 Jun 2009
First published
20 Jul 2009

Soft Matter, 2009,5, 3657-3662
Article type
Paper

Growth of fibrous aggregates of silica nanoparticles: Fibre growth by mimicking the biogenic silica patterning processes

M. N. Tahir, F. Natalio, R. Berger, M. Barz, P. Theato, H. Schröder, W. E. G. Müller and W. Tremel, Soft Matter, 2009, 5, 3657
DOI: 10.1039/B905178C

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