Iron nanoparticle growth in organic superstructures

Lise Marie Lacroix*, Sébastien Lachaize, Andrea Falqui, Marc Respaud, Bruno Chaudret

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

A tunable synthesis of iron nanoparticles (NPs) based on the decomposition of {Fe[N(SiMe3)2]2]2 in the presence of organic superstructures composed of palmitic acid and hexadecylamine is reported. Control of the size (from 1.5 to 27 nm) and shape (spheres, cubes, or stars) of the NPs has been achieved. An environment-dependent growth model is proposed on the basis of results obtained for the NP morphology under various conditions and a complete Mössbauer study of the colloid composition at different reacting stages. It involves (i) an anisotropic growth process inside organic superstructures, leading to monocrystalline cubic NPs, and (N) isotropic growth outside these superstructures, yielding polycrystalline spherical NPs.

Original languageEnglish (US)
Pages (from-to)549-557
Number of pages9
JournalJournal of the American Chemical Society
Volume131
Issue number2
DOIs
StatePublished - Jan 21 2009

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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