Abstract
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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 389-392 |
| Number of pages | 4 |
| Journal | Chemical Physics Letters |
| Volume | 683 |
| DOIs | |
| State | Published - Sep 1 2017 |
Funding
This material is based upon work supported by the Air Force Office of Scientific Research under Awards FA9550-12-1-0280 and FA9550-16-1-0150, and the National Science Foundation's Materials Research Science and Engineering Center (MRSEC) program (DMR-1121262). C.R.L, L.K.F., M.N.O., and M.R.J. acknowledge the National Science Foundation for a graduate research fellowship. C.R.L. and M.R.J. are grateful to Northwestern University's International Institute for Nanotechnology for a Ryan Fellowship. L.K.F. is grateful to Northwestern University for a Basolo Fellowship. This work made use of the EPIC facility of the NUANCE Center at Northwestern University, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF NNCI-1542205); the MRSEC program (NSF DMR-1121262) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN.
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry