He Yao, Lu Hao-Ting, Sai Li-Man, Lai Wen-Yong, Fan Qu-Li, Wang Lian-Hui, Huang Wei
Institute of Advanced Materials (IAM), Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China.
J Phys Chem B. 2006 Jul 13;110(27):13352-6. doi: 10.1021/jp061719h.
A novel method, the program process of microwave irradiation (PPMI), which commendably integrates good qualities of microwave irradiation and a programmed heating process, is presented to synthesize high-quality CdTe nanocrystals in aqueous solution. Microwave irradiation, which acts as the heating mode of PPMI, is highly favorable for a narrow size distribution and low concentration of surface defects of nanocrystals. On the other hand, two correlative processes (the first process and the second process) are utilized in PPMI to actualize the programmed heating process, which is an effective strategy to improve the quality of nanocrystals. Thus, a series (diameters approximately 2-4 nm) of highly luminescent (PLQY approximately 30-68%) CdTe nanocrystals were rapidly prepared (reaction time approximately 1-30 min) in aqueous phase through PPMI.
本文提出了一种新方法——微波辐照程序过程（PPMI），该方法出色地整合了微波辐照和程序加热过程的优点，用于在水溶液中合成高质量的碲化镉纳米晶体。作为PPMI加热模式的微波辐照，非常有利于纳米晶体具有窄的尺寸分布和低浓度的表面缺陷。另一方面，PPMI利用两个相关过程（第一个过程和第二个过程）来实现程序加热过程，这是提高纳米晶体质量的有效策略。因此，通过PPMI在水相中快速制备了一系列高发光性（PLQY约为30 - 68%）的碲化镉纳米晶体（直径约2 - 4 nm）（反应时间约1 - 30分钟）。
