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A Mechanism for Transition-Metal Nanoparticle Self-Assembly
Abstract
The four-step mechanism by which transition-metal nanoclusters or bulk-metal films self-assemble from metal salts under reductive conditions has been discovered. The presence of two autocatalytic steps in the same reaction scheme--double autocatalysis--is the key to the sharp "turn-on" feature after an induction period observed in the signature kinetic curves. Predictions of the new mechanism that are tested experimentally include the following: that low concentrations and high temperatures will favor nanoclusters over bulk-metal film formation; that bulk-metal is formed in some, if not many, literature syntheses reporting only Pt(0) nanoclusters; and that added ligands are one key to turning on the new mechanism. Particle-size-dependent metal-ligand bond dissociation energies are another implication from this mechanistic work.
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Özkar, S., & Finke, R. G. (2002) · Journal of the American Chemical Society · doi:10.1021/ja012749v · Cited by 293
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Cited by
Shape‐Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?
Xia, Y., Xiong, Y., Lim, B., & Skrabalak, S. E. (2009) · Angewandte Chemie International Edition · doi:10.1002/anie.200802248 · Cited by 5,702
Mechanisms of Nucleation and Growth of Nanoparticles in Solution
Thanh, N. T. K., Maclean, N., & Mahiddine, S. (2014) · Chemical Reviews · doi:10.1021/cr400544s · Cited by 3,399
Finney, E. E., & Finke, R. G. (2008) · Journal of Colloid and Interface Science · doi:10.1016/j.jcis.2007.05.092 · Cited by 377
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Metadata
- Authors
- Besson, C., Finney, E. E., & Finke, R. G.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-05-13
- Volume
- 127
- Issue
- 22
- Pages
- 8179-8184
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1984866899
- Cited by
- 212
- References
- 1
- FWCI
- 8.26
- Type
- journal article
- Language
- en
- Open access
- closed
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