title: Microwave-mediated nonaqueous synthesis of quantum dots at moderate temperature.
abstract: The use of microwave irradiation to accelerate both inorganic and organic chemical reactions has attracted widespread attention. Generally, microwave-mediated synthesis of quantum dots (QDs) has been conducted in aqueous solution. Here, using commercial diesel and glycerol as reaction medium, a microwave-mediated nonaqueous method toward CdSe QDs with size-tunable photoluminescent properties produces oleic-acid-protected QDs at moderate reaction temperatures of 50-140 degrees C, which are much lower than the current temperature necessary for the synthesis of CdSe QDs in organic solvents. The appropriate condition optimization for high-quality CdSe QDs shows that different sizes of CdSe QDs with emission wavelengths between 450 and 600 nm have been synthesized through varying time, temperature, feed ratio, and reaction medium.
authors: Center for Biomedical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China. mqzhu@hnu.cn
authors: Ming-Qiang
authors: MQ
authors: Zhu
authors: Zheng
authors: Z
authors: Gu
authors: Jun-Bing
authors: JB
authors: Fan
authors: Xiao-Bo
authors: XB
authors: Xu
authors: Jing
authors: J
authors: Cui
authors: Jin-Hua
authors: JH
authors: Liu
authors: Feng
authors: F
authors: Long
mesh_terms: D002104:Cadmium / Q000737:chemistry; D003460:Crystallization; D008670:Metals; D046529:Microscopy, Electron, Transmission / Q000379:methods; D008872:Microwaves; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry; D010777:Photochemistry / Q000379:methods; D045663:Quantum Dots; D012643:Selenium / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D008670:Metals; D010087:Oxides; D012997:Solvents; D002104:Cadmium; D014867:Water; D012643:Selenium