Synthesis and assembly of monodisperse spherical Cu2S nanocrystals.
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.
Li
Sen
S
Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, Henan, 475004, PR China.
Wang
HongZhe
H
Xu
WeiWei
W
Si
HongLei
H
Tao
XiaoJun
X
Lou
Shiyun
S
Du
Zuliang
Z
Li
Lin Song
LS