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The concept of delayed nucleation in nanocrystal growth demonstrated for the case of iron oxide nanodisks

Casula, M.F., Jun, Y.-W., Zaziski, D.J., Chan, E.M., Corrias, A., Alivisatos, A.P. (2006) The concept of delayed nucleation in nanocrystal growth demonstrated for the case of iron oxide nanodisks. Journal of the American Chemical Society, 128 (5). pp. 1675-1682. ISSN 0002-7863. (doi:10.1021/ja056139x) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:46177)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://dx.doi.org/10.1021/ja056139x

Abstract

A comprehensive study of iron oxide nanocrystal growth through non-hydrolitic, surfactant-mediated thermal reaction of iron pentacarbonyl and an oxidizer has been conducted, which includes size control, anisotropic shape evolution, and crystallographic phase transition of monodisperse iron oxide colloidal nanocrystals. The reaction was monitored via in situ UV-vis spectroscopy, taking advantage of the color change accompanying the iron oxide colloid formation, allowing measurement of the induction time for nucleation. Features of the synthesis such as the size control and reproducibility are related to the occurrence of the observed delayed nucleation process. As a separate source of iron and oxygen is adopted, phase control could also be achieved by sequential injections of oxidizer.

Item Type: Article
DOI/Identification number: 10.1021/ja056139x
Uncontrolled keywords: Anisotropy, Colloids, Crystal growth, Crystallography, Iron oxides, Nucleation, Phase transitions, Synthesis (chemical), Colloidal nanocrystals, Iron oxide nanodisks, Iron pentacarbonyl, Oxidizers, Nanostructured materials, carbonyl iron, iron oxide, nanocrystal, nanoparticle, oxidizing agent, oxygen, anisotropy, article, atomic force microscopy, colloid, color, crystallography, particle size, phase transition, reaction analysis, reproducibility, transmission electron microscopy, ultraviolet spectroscopy
Subjects: Q Science > QC Physics > QC176.8.N35 Nanoscience, nanotechnology
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Anna Corrias
Date Deposited: 16 Dec 2014 15:16 UTC
Last Modified: 16 Nov 2021 10:18 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46177 (The current URI for this page, for reference purposes)

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