Published December 1, 2001
| public
Journal Article
Purification of Molecularly Bridged Metal Nanoparticle Arrays by Centrifugation and Size Exclusion Chromatography
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.
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.Additional details
- Eprint ID
- 69424
- DOI
- 10.1021/ac010812t
- Resolver ID
- CaltechAUTHORS:20160803-161209681
- DMR-9900073
- NSF
- David and Lucile Packard Foundation
- Created
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2016-08-03Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field