Popis: |
An easy and green synthetic strategy for the one-pot large-scale preparation of carbon nanodots (C-dots) is demonstrated. The C-dots have a series of excellent optical features such as strong fluorescence and excitation-wavelength-dependent photoluminescence properties. Notably, C-dots can be rapidly and facilely achieved on a large scale (e.g., 0.3 g C-dots/25 min) by using cheap, accessible, and natural materials (e.g., milk, honey, silk, hair, lemon, and magnolia) as the green carbonaceous precursor. The as-prepared C-dots, which are shown to serve as high-performance fluorescent stains, are superbly suitable for a variety of optics-related applications, including in vitro and in vivo bioimaging, printing inks, and sensors. Eventually, this kind of microwave-assisted strategy could serve as a powerful tool for synthesizing large-scale C-dots with strong fluorescence, holding great promise for myriad optics-related applications. |