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Issue 19, 2011
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Silver tip formation on colloidal CdSe nanorods by a facile phase transfer protocol

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Abstract

A facile phase transfer procedure is described for the formation of uniform silver metal tips on II–VI semiconductor nanorods. Judicious choice of a functional ligand dimethyl phenol (DMP) which binds to the semiconductor rod in the organic phase enables the transfer of metal ions from the aqueous phase and their reduction onto the nanorod. The metal tips initially form as random sub <2 nm particles surrounding the nanorod which ripen to dual tips at the nanorod ends. The nanorod hybrids can be assembled into perpendicularly aligned arrays by simple solvent evaporation. The hybrid nanostructures are characterised by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence (PL), ultraviolet-visible spectroscopy (UV-Vis) and X-ray photoelectron spectroscopy (XPS). A detailed FTIR analysis is also carried out to predict the role of the ligands in the tipping procedure.

Graphical abstract: Silver tip formation on colloidal CdSe nanorods by a facile phase transfer protocol

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Publication details

The article was received on 10 Dec 2010, accepted on 28 Mar 2011 and first published on 08 Apr 2011


Article type: Communication
DOI: 10.1039/C0JM04324A
Citation: J. Mater. Chem., 2011,21, 6815-6820
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    Silver tip formation on colloidal CdSe nanorods by a facile phase transfer protocol

    T. Bala, A. Sanyal, A. Singh, D. Kelly, C. O'Sullivan, F. Laffir and K. M. Ryan, J. Mater. Chem., 2011, 21, 6815
    DOI: 10.1039/C0JM04324A

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