Green chemistry for large-scale synthesis of semiconductor quantum dots.
Large-scale synthesis of semiconductor nanocrystals or quantum dots (QDs) with high concentration and high yield through simultaneously increasing the precursor concentration was introduced. This synthetic route conducted in diesel has produced gram-scale CdSe semiconductor quantum dots (In optimal scale-up synthetic condition, the one-pot yield of QDs is up to 9.6g). The reaction has been conducted in open air and at relatively low temperature at 190-230 degrees C in the absence of expensive organic phosphine ligands, aliphatic amine and octadecene, which is really green chemistry without high energy cost for high temperature reaction and unessential toxic chemicals except for Cd, which is the essential building block for QDs.
Liu
Jin-Hua
JH
Biomedical Engineering Center, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China.
Fan
Jun-Bing
JB
Gu
Zheng
Z
Cui
Jing
J
Xu
Xiao-Bo
XB
Liang
Zhi-Wu
ZW
Luo
Sheng-Lian
SL
Zhu
Ming-Qiang
MQ
D002104:Cadmium / Q000737:chemistry; D003460:Crystallization; D008024:Ligands; D008027:Light; D053768:Metal Nanoparticles; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D010720:Phosphines / Q000737:chemistry; D045663:Quantum Dots; D012666:Semiconductors; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013696:Temperature; D014961:X-Ray Diffraction
D008024:Ligands; D010720:Phosphines; D002104:Cadmium