Superlattices of platinum and palladium nanoparticles

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The authors have used a nonionic inverse micelle synthesis technique to form nanoclusters of platinum and palladium. These nanoclusters can be rendered hydrophobic or hydrophilic by the appropriate choice of capping ligand. Unlike Au nanoclusters, Pt nanoclusters show great stability with thiol ligands in aqueous media. Alkane thiols, with alkane chains ranging from C{sub 6} to C{sub 18} were used as hydrophobic ligands, and with some of these they were able to form 2-D and/or 3-D superlattices of Pt nanoclusters as small as 2.7 nm in diameter. Image processing techniques were developed to reliably extract from transmission electron micrographs (TEMs) ... continued below

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36 p.

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MARTIN,JAMES E.; WILCOXON,JESS P.; ODINEK,JUDY G. & PROVENCIO,PAULA P. April 6, 2000.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The authors have used a nonionic inverse micelle synthesis technique to form nanoclusters of platinum and palladium. These nanoclusters can be rendered hydrophobic or hydrophilic by the appropriate choice of capping ligand. Unlike Au nanoclusters, Pt nanoclusters show great stability with thiol ligands in aqueous media. Alkane thiols, with alkane chains ranging from C{sub 6} to C{sub 18} were used as hydrophobic ligands, and with some of these they were able to form 2-D and/or 3-D superlattices of Pt nanoclusters as small as 2.7 nm in diameter. Image processing techniques were developed to reliably extract from transmission electron micrographs (TEMs) the particle size distribution, and information about the superlattice domains and their boundaries. The latter permits one to compute the intradomain vector pair correlation function of the particle centers, from which they can accurately determine the lattice spacing and the coherent domain size. From these data the gap between the particles in the coherent domains can be determined as a function of the thiol chain length. It is found that as the thiol chain length increases, the gaps between particles within superlattice domains increases, but more slowly than one might expect, possibly indicating thiol chain interdigitation.

Physical Description

36 p.

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OSTI as DE00753461

Medium: P; Size: 36 pages

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  • Journal Name: Journal Physical Chem B; Other Information: Submitted to Journal Physical Chem B

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  • Report No.: SAND2000-0858J
  • Grant Number: AC04-94AL85000
  • DOI: 10.1021/jp993212v | External Link
  • Office of Scientific & Technical Information Report Number: 753461
  • Archival Resource Key: ark:/67531/metadc708505

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  • April 6, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 12, 2017, 2:12 p.m.

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MARTIN,JAMES E.; WILCOXON,JESS P.; ODINEK,JUDY G. & PROVENCIO,PAULA P. Superlattices of platinum and palladium nanoparticles, article, April 6, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc708505/: accessed June 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.