Iron Nanoparticle Growth in Organic Superstructures

被引：108

作者：

Lacroix, Lise-Marie ^{[1
,2
]}

Lachaize, Sebastien ^{[1
,2
]}

Falqui, Andrea ^{[1
,2
]}

Respaud, Marc ^{[1
,2
]}

Chaudret, Bruno ^{[3
]}

机构：

[1] Univ Toulouse, INSA, UPS, LPCNO, F-31077 Toulouse, France

[2] CNRS, LPCNO, F-31077 Toulouse, France

[3] CNRS, Chim Coordinat Lab, F-31077 Toulouse 4, France

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 02期

关键词：

SHAPE CONTROL; METAL NANOPARTICLES; FE NANOPARTICLES; MONODISPERSE; SUPERLATTICES; NANOCRYSTALS; NANOWIRES; OXIDE; CRYSTALLINE; NUCLEATION;

D O I：

10.1021/ja805719c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A tunable synthesis of iron nanoparticles (NIPS) based on the decomposition of {Fe[N(SiMe3)(2)](2)}(2) in the presence of organic superstructures composed of palmitic acid and hexadlecylamine is reported. Control of the size (from 1.5 to 27 nm) and shape (spheres, cubes, or stars) of the NIPS 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 Mossbauer study of the colloid composition at different reacting stages. It involves (i) an anisotropic growth process inside organic superstructures, leading to monocrystalline cubic NIPS, and (ii) isotropic growth outside these superstructures, yielding polycrystalline spherical NPs.

引用

页码：549 / 557

页数：9

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