Universal Noble Metal Nanoparticle Seeds Realized Through Iterative Reductive Growth and Oxidative Dissolution Reactions.
Control over nanoparticle shape and size is commonly achieved via a seed-mediated approach, where nanoparticle precursors, or seeds, are hypothesized to act as templates for the heterogeneous nucleation of anisotropic products. Despite the wide variety of shapes that have been produced via this appr...
| Publicado en: | Journal of the American Chemical Society Vol. 136; no. 21; pp. 7603 - 7607 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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American Chemical Society
5/28/2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=96519640&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 96519640 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 5/28/2014 vid: 136 iid: 21 pid: 997 pub: American Chemical Society artinfo: ui: 96519640 10.1021/ja503509k ppf: 7603 ppct: 4 formats: tig: atl: Universal Noble Metal Nanoparticle Seeds Realized Through Iterative Reductive Growth and Oxidative Dissolution Reactions. aug: au: O'Brien, Matthew N. Jones, Matthew R. Brown, Keith A. Mirkin, Chad A. affil: Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States su: Physical & theoretical chemistry Chemical structure Nanochemistry Nanoparticle synthesis Nanoparticles Optical properties sug: subj: Physical & theoretical chemistry Chemical structure Nanochemistry Nanoparticle synthesis Nanoparticles Optical properties ab: Control over nanoparticle shape and size is commonly achieved via a seed-mediated approach, where nanoparticle precursors, or seeds, are hypothesized to act as templates for the heterogeneous nucleation of anisotropic products. Despite the wide variety of shapes that have been produced via this approach, high yield and uniformity have been more difficult to achieve. These shortcomings are attributed to limited structural control and characterization of the initial distribution of seeds. Herein, we report how iterative reductive growth and oxidative dissolution reactions can be used to systematically control seed structural uniformity. Using these reactions, we verify that seed structure dictates anisotropic nanoparticle uniformity and show that iterative seed refinement leads to unprecedented noble metal nanoparticle uniformities and purities for eight different shapes produced from a single seed source. Because of this uniformity, the first nanoparticle optical extinction coefficients for these eight shapes were analytically determined. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2014 holdings: @attributes: islocal: N |
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