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Issue 19, 2012
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Polydentate disulfides for enhanced stability of AuNPs and facile nanocavity formation

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Abstract

Stabilization of gold nanoparticles (AuNPs) on a unique polydentate disulfide ligand, poly(DSDMA) synthesized by selective polymerization of bis(methacryloyl hydroxyethyl)disulfide (DSDMA), results in 2.2 nm monodisperse AuNPs, which exhibit Coulomb blockade at room temperature. A higher graft density (1.8 chains nm−2) of the polydentate ligand results in additional stability in DMF up to one year and competitive exchange against DTT (100 mM) up to 72 h. Crosslinking of the polymer remarkably enhances the thermal stability up to 140 °C for 4 h and also during selective etching by methyl iodide which results in nanocapsules as confirmed by TEM and AFM.

Graphical abstract: Polydentate disulfides for enhanced stability of AuNPs and facile nanocavity formation

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Publication details

The article was received on 04 Feb 2012, accepted on 15 Mar 2012 and first published on 16 Mar 2012


Article type: Paper
DOI: 10.1039/C2JM30680H
Citation: J. Mater. Chem., 2012,22, 10000-10008
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    Polydentate disulfides for enhanced stability of AuNPs and facile nanocavity formation

    S. C. Biradar, D. B. Shinde, V. K. Pillai and M. G. Kulkarni, J. Mater. Chem., 2012, 22, 10000
    DOI: 10.1039/C2JM30680H

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