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Published May 4, 1995 | public
Journal Article

Thermodynamic Control of Gold Nanocrystal Size: Experiment and Theory


We present an experimental demonstration and a corresponding statistical thermodynamic formulation of surfactant-mediated size control of Au nanocrystals. In particular, we show how particle size-over a range of diameters from 15 to 200 A-can be sensitively controlled by simply varying the gold-to-thiol ratio. The agreement between theory and experiment is confirmed by X-ray line-broadening measurements of the nanocrystal products from a room-temperature synthesis in which the gold-thiol composition is systematically varied.

Additional Information

© 1995 American Chemical Society. Published in print 1 May 1995. W.M.G. would like to thank Professor Rob Whetten for bringing to his attention the synthesis of Brust et al. (ref 13), and the National Science Foundation (Grant CHE-92-01166) for partial financial support of this research. J.R.H. acknowledges funding from the NSF-NYI program, a Packard Fellowship, and a Dreyfus Young Faculty Award. D.V.L. would like to thank Professor R. Garrell for valuable discussions.

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