单分散球形Cu2S纳米晶体的合成与组装

Synthesis and assembly of monodisperse spherical Cu2S nanocrystals.

作者信息

Li Sen, Wang HongZhe, Xu WeiWei, Si HongLei, Tao XiaoJun, Lou Shiyun, Du Zuliang, Li Lin Song

机构信息

Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, Henan, 475004, PR China.

出版信息

J Colloid Interface Sci. 2009 Feb 15;330(2):483-7. doi: 10.1016/j.jcis.2008.10.062. Epub 2008 Oct 30.

DOI:10.1016/j.jcis.2008.10.062

PMID:19007936

Abstract

High-quality monodisperse Cu(2)S nanocrystals (sizes from 2 nm to 20 nm) have been successfully synthesized by the reaction of copper stearate (CuSt(2)) and dodecanethiol (DDT) in 1-octadecene (ODE). The nanocrystals were characterized using X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), and transmission electron microscopy (TEM). These as-prepared Cu(2)S nanocrystals with certain sizes have been found with good self-assembly behaviors, and they were easily to assemble into two-dimensional and three-dimensional superlattice structures. DDT served as both sulfur source and capping ligand, and was found a key factor to affect the growth and the self-assembly behaviors of the Cu(2)S nanocrystals.

摘要

通过硬脂酸铜（CuSt₂）与十二硫醇（DDT）在1-十八烯（ODE）中的反应，成功合成了高质量的单分散Cu₂S纳米晶体（尺寸从2纳米到20纳米）。使用X射线衍射（XRD）、X射线光电子能谱（XPS）和透射电子显微镜（TEM）对纳米晶体进行了表征。已发现这些制备好的具有一定尺寸的Cu₂S纳米晶体具有良好的自组装行为，并且它们很容易组装成二维和三维超晶格结构。DDT既作为硫源又作为封端配体，并且被发现是影响Cu₂S纳米晶体生长和自组装行为的关键因素。