Zhu Ming-Qiang, Gu Zheng, Fan Jun-Bing, Xu Xiao-Bo, Cui Jing, Liu Jin-Hua, Long Feng
Center for Biomedical Engineering, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, China.
Langmuir. 2009 Sep 1;25(17):10189-94. doi: 10.1021/la900962t.
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.
利用微波辐射加速无机和有机化学反应已引起广泛关注。一般来说，微波介导的量子点（QDs）合成是在水溶液中进行的。在此，以商用柴油和甘油作为反应介质，采用微波介导的非水方法合成具有尺寸可调光致发光特性的CdSe量子点，在50-140摄氏度的适中反应温度下生成了油酸保护的量子点，该温度远低于目前在有机溶剂中合成CdSe量子点所需的温度。对高质量CdSe量子点进行的适当条件优化表明，通过改变时间、温度、进料比和反应介质，已合成出发射波长在450至600纳米之间的不同尺寸的CdSe量子点。
