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Purification of Molecularly Bridged Metal Nanoparticle Arrays by Centrifugation and Size Exclusion Chromatography

Novak, James P. and Nickerson, Charles and Franzen, Stefan and Feldheim, Daniel L. (2001) Purification of Molecularly Bridged Metal Nanoparticle Arrays by Centrifugation and Size Exclusion Chromatography. Analytical Chemistry, 73 (23). pp. 5758-5761. ISSN 0003-2700. https://resolver.caltech.edu/CaltechAUTHORS:20160803-161209681

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Abstract

Size exclusion chromatography and centrifugation separation protocols were developed and compared for isolating enriched fractions of phenylethynyl-bridged metal nanoparticle dimers and trimers from the monomeric particle starting material. Both methods enabled the isolation of enriched fractions of a desired array without causing significant sample aggregation or replacement of the phenylethynyl bridge. Solutions containing ca. 70% bridged gold dimers were obtained using either method. The further development of methods for separating discrete arrays of covalently bridged nanoparticle homo and hetero structures is expected to help advance our understanding of collective metal particle electronic structure-function relationships.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ac010812tDOIArticle
http://pubs.acs.org/doi/abs/10.1021/ac010812tPublisherArticle
Additional Information:© 2001 American Chemical Society. Received 19 July 2001; accepted 18 September 2001; published online 26 October 2001; published in print 1 December 2001. D.L.F. thanks the NSF (DMR-9900073) and The David and Lucile Packard Foundation for support of this work. The authors thank Chancellor M. A. Fox and Professor J. K. Whitesell for use of an HPLC.
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Funding AgencyGrant Number
NSFDMR-9900073
David and Lucile Packard FoundationUNSPECIFIED
Issue or Number:23
Record Number:CaltechAUTHORS:20160803-161209681
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160803-161209681
Official Citation:Novak, J. P., Nickerson, C., Franzen, S., & Feldheim, D. L. (2001). Purification of Molecularly Bridged Metal Nanoparticle Arrays by Centrifugation and Size Exclusion Chromatography. Analytical Chemistry, 73(23), 5758-5761. doi:10.1021/ac010812t
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69424
Collection:CaltechAUTHORS
Deposited By: Melissa Ray
Deposited On:03 Aug 2016 23:59
Last Modified:03 Oct 2019 10:22

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