六方密排钴纳米盘的合成

Synthesis of hcp-Co Nanodisks.

作者信息

Puntes Victor F, Zanchet Daniela, Erdonmez Can K, Alivisatos A Paul

机构信息

Chemistry Department and Materials Science Department, University of California, Berkeley 94720, USA.

出版信息

J Am Chem Soc. 2002 Oct 30;124(43):12874-80. doi: 10.1021/ja027262g.

DOI:10.1021/ja027262g

PMID:12392435

Abstract

hcp Co disk-shaped nanocrystals were obtained by rapid decomposition of cobalt carbonyl in the presence of linear amines. Other surfactants, in addition to the amines, like phosphine oxides and oleic acid were used to improve size dispersion, shape control, and nanocrystal stability. Co disks are ferromagnetic in character and they spontaneously self-assemble into long ribbons. X-ray and electron diffraction, electron microscopy, and SQUID magnetometry have been employed to characterize this material.

摘要

通过在直链胺存在下快速分解羰基钴获得了六方密堆积（hcp）结构的盘状纳米晶体。除了胺之外，还使用了其他表面活性剂，如氧化膦和油酸，以改善尺寸分散性、形状控制和纳米晶体稳定性。钴盘具有铁磁性，它们会自发地自组装成长条带。已采用X射线和电子衍射、电子显微镜以及超导量子干涉仪磁力测量法来表征这种材料。