One-Pot Microwave Synthesis of Water-Dispersible, Ultraphoto- and pH-Stable, and Highly Fluorescent Silicon Quantum Dots
Yao He,*,? Yiling Zhong,? Fei Peng,? Xinpan Wei,? Yuanyuan Su,?,? Yimei Lu,? Shao Su,? Wei Gu,? Liangsheng Liao,? and Shuit-Tong Lee*,?
|?Center of Super-Diamond & Advanced Films and Department of Physics & Materials Science, City University of Hong Kong, Hong Kong SAR, China|
Fluorescent silicon quantum dots (SiQDs) are facilely prepared via one-pot microwave-assisted synthesis. The as-prepared SiQDs feature excellent aqueous dispersibility, robust photo- and pH-stability, strong fluorescence, and favorable biocompatibility. Experiments show the SiQDs are superbly suitable for long-term immunofluorescent cellular imaging. Our results provide a new and invaluable methodology for large-scale synthesis of highquality SiQDs, which are promising for various optoelectronic and biological applications.