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

Date
2011
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 from as 10 random sub< 2nm 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.
Supervisor
Description
peer-reviewed
Publisher
Royal Society of Chemistry
Citation
Journal of Materials Chemistry;,21, pp. 6815-6820
Collections
Bernal Institute
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Keywords
semiconductor nanorods, nanocrystals
ULRR Identifiers
https://researchrepository.ul.ie/handle/10344/2334
 https://doi.org/10.34961/15137
Funding code
Funding Information
Science Foundation Ireland (SFI), INSPIRE, Irish Research Council for Science, Engineering and Technology (IRCSET)
Sustainable Development Goals
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Type
Article
Rights
https://creativecommons.org/licenses/by-nc-sa/1.0/
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