Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 284, Issue 2, Pages 521-526Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2004.10.038
Keywords
digestive ripening; self-assembly; 3-D superlattice; grain scale
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Capped nanoparticles of silver were synthesized via the solvated metal atom dispersion (SMAD) technique followed by a digestive ripening procedure producing gram quantities of monodisperse spherical nanoparticles. This shows for the first time that a digestive ripening protocol is possible for an element other than gold. The particle size and optical spectra were found to be dependent on the capping agent used. Particles capped with dodecane thiol had a mean diameter of 6.6 +/- 1 nm, while trioctyl phosphine capped particles were 6.0 +/- 2 nm determined via TEM microscopy. These Particles were found to organize into two- and three-dimensional superlattices with a well defined geometry through self-assembly in a liquid solution, that was dictated by the ligand used resulting in a triangular or circular lattice. (c) 2004 Elsevier Inc. All rights reserved.
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