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Gold Cluster Crystals

Published online by Cambridge University Press:  02 July 2020

J.F. Hainfeld ,
R.D. Powell ,
F.R. Furuya  and
J.S. Wall
J.F. Hainfeld
Affiliation:
Biology Department, Brookhaven National Lab, Upton NY11973
R.D. Powell
Affiliation:
Nanoprobes, Inc., 95 Horseblock Rd., Yaphank NY11980
F.R. Furuya
Affiliation:
Nanoprobes, Inc., 95 Horseblock Rd., Yaphank NY11980
J.S. Wall
Affiliation:
Biology Department, Brookhaven National Lab, Upton NY11973
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Extract

Gold clusters are gold compounds with a core of gold atoms and organic groups covalently bound to the surface gold atoms. An example is undecagold, Au11(P(C6H5)3)7, whose structure was solved by x-ray crystallography using 3-dimensional crystals. These differ from colloidal gold, which are suspensions of metal particles, usually formed by metal ion reduction; although the particles may be approximately the same size, they vary due to the statistical process of formation. Gold clusters are compounds with a definite formula, and should all be perfectly identical. However, it is known that there is a family of stable gold cluster compounds, such as Au6, Au11, Au13, AU55, Au67, etc. In a given preparation of gold clusters, there is usually some mixture of these, thus leading to some size variation. Methods such as gel filtration column chromatography and ultrafiltration can be used to separate most of these species, so that relatively pure preparations may be achieved.

Type
Labeling for Microscopy and Correlative Microscopy
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 326 - 327
Copyright
Copyright © Microscopy Society of America

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References

1.Gutierrez, E. et al., Eur. Phys. J., 9 (1999) 1.Google Scholar
2.Wall, J.S., J. Struct. Biol. 127 (1999) 161.CrossRefGoogle Scholar
3. The authors wish to thank Dr. Edmund Gutierrez for assisting with gold preparation. We would also like to thank Dr. Martha Simon, Ms. Beth Lin, and Mr. Frank Kito for STEM operation. Research supported by the Office of Biological and Environmental Research of the U.S. Department of Energy under Prime Contract No. DE-AC02- 98CH10886 with Brookhaven National Laboratory, and by National Institutes of Health Grant 2 P41 RR01777 and SBIR grants.Google Scholar