TY - JOUR
T1 - Critical sizes in the growth of Au clusters
AU - Alvarez, M. M.
AU - Khoury, J. T.
AU - Schaaff, T. G.
AU - Shafigullin, M.
AU - Vezmar, I.
AU - Whetten, R. L.
N1 - Funding Information: The authors thank S. Harfenist and Z.L. Wang for permission to cite their TEM results prior to publication, and C.L. Cleveland and U. Landman for further discussion of the results contained in Ref. \[8\].F inan-cial support has been provided by the Georgia Tech Research Foundation, the Packard Foundation and the Office of Naval Research.
PY - 1997/2/21
Y1 - 1997/2/21
N2 - A systematic exploration of the growth of Au clusters has revealed a critical size for the formation of stable assemblies. Mass-spectrometric measurements of clusters, as grown in the presence of an excess of weakly binding long-chain n-alkylthiol(ate) groups, show high yields of new compounds with core masses near the 15k minimum (≈ 75 Au atoms; k = 103 amu), and also at 23k, and 29k. Structural analyses establish their cores as compact metal nanocrystals of the corresponding effective diameters (1.4 to 1.7 nm), probably of decahedral close-packing and morphology. The precise identities of this sequence of special structures can now be sought.
AB - A systematic exploration of the growth of Au clusters has revealed a critical size for the formation of stable assemblies. Mass-spectrometric measurements of clusters, as grown in the presence of an excess of weakly binding long-chain n-alkylthiol(ate) groups, show high yields of new compounds with core masses near the 15k minimum (≈ 75 Au atoms; k = 103 amu), and also at 23k, and 29k. Structural analyses establish their cores as compact metal nanocrystals of the corresponding effective diameters (1.4 to 1.7 nm), probably of decahedral close-packing and morphology. The precise identities of this sequence of special structures can now be sought.
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U2 - 10.1016/S0009-2614(96)01535-7
DO - 10.1016/S0009-2614(96)01535-7
M3 - Article
SN - 0009-2614
VL - 266
SP - 91
EP - 98
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -