期刊
CHEMICAL PHYSICS LETTERS
卷 683, 期 -, 页码 389-392出版社
ELSEVIER
DOI: 10.1016/j.cplett.2017.01.050
关键词
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资金
- Air Force Office of Scientific Research [FA9550-12-1-0280, FA9550-16-1-0150]
- National Science Foundation's Materials Research Science and Engineering Center (MRSEC) program [DMR-1121262]
- National Science Foundation
- Northwestern University's International Institute for Nanotechnology
- Northwestern University
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource [NSF NNCI-1542205]
- MRSEC program at the Materials Research Center [NSF DMR-1121262]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois, through the IIN
Several seed-mediated syntheses of low symmetry anisotropic nanoparticles yield broad product distributions with multiple defect structures. This observation challenges the role of the nanoparticle precursor as a seed for certain syntheses and suggests the possibility of alternate nucleation pathways. Herein, we report a method to probe the role of the nanoparticle precursor in anisotropic nanoparticle nucleation with compositional and structural 'labels' to track their fate. We use the synthesis of gold triangular nanoprisms (Au TPs) as a model system. We propose a mechanism in which, rather than acting as a template, the nanoparticle precursor catalyzes homogenous nucleation of Au TPs. (C) 2017 Elsevier B.V. All rights reserved.
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