Liquid chromatographic analysis and characterization of inorganic nanoclusters

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We describe the application of the techniques of high pressure liquid chromatography (HPLC) to analyze and characterize various types of inorganic nanoclusters. Both metal and semiconductor nanoclusters were grown in inverse micelles and we demonstrate how the nanoclusters can be separated from the surfactants and other byproducts of the reaction by using a variety of HPLC columns. We also discuss passivation of the cluster surface to prevent aggregation. The HPLC columns separate the clusters based upon a combination of size exclusion and chemical affinity mechanisms and the optical properties of the purified clusters are determined on- line using a variety ... continued below

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4 p.

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Wilcoxon, J.P. & Craft, S.A. July 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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

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Description

We describe the application of the techniques of high pressure liquid chromatography (HPLC) to analyze and characterize various types of inorganic nanoclusters. Both metal and semiconductor nanoclusters were grown in inverse micelles and we demonstrate how the nanoclusters can be separated from the surfactants and other byproducts of the reaction by using a variety of HPLC columns. We also discuss passivation of the cluster surface to prevent aggregation. The HPLC columns separate the clusters based upon a combination of size exclusion and chemical affinity mechanisms and the optical properties of the purified clusters are determined on- line using a variety of detectors. These include a photodiode array for collecting absorbance spectra, a fluorescence detector to monitor luminescence, and a conductivity detector to monitor surface charge on the nanoclusters. We illustrate the analysis of nanoclusters using HPLC by showing data from semiconductor Si, MoS{sub 2} nanoclusters and Au nanoclusters. An extremely novel luminescence was observed from very small metal nanoclusters.

Physical Description

4 p.

Notes

OSTI as DE96013187

Source

  • 3. international conference on nanostructured materials, Kona, HI (United States), 8-12 Jul 1996

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  • Other: DE96013187
  • Report No.: SAND--96-1914C
  • Report No.: CONF-960753--2
  • Grant Number: AC04-94AL85000;AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 274128
  • Archival Resource Key: ark:/67531/metadc667328

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  • July 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • April 13, 2016, 2:46 p.m.

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Wilcoxon, J.P. & Craft, S.A. Liquid chromatographic analysis and characterization of inorganic nanoclusters, article, July 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc667328/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.