Fluorescence Sensing by Functionalized Carbon Dots Nanoparticles
2015
Fluorescent carbon dots (CDs) nanoparticles are usually referred as the natural and sustainable
alternative to the semiconductor quantum dots (QDs). Indeed, CDs can easily be synthesized from
renewable biomass. Compared to QDs, they have a higher solubility in water, have higher resistance
to photo degradation, show a nonblinking luminescence, and have lower toxicity and generally good
biocompatibility. The color-tuning properties in the visible wavelength range and quantum yields
(QYs) of CDs are usually referred as less favorable properties when compared with QDs, but recent
research advances are markedly improving these characteristics of CDs (Esteves da Silva 2011,
2012; Zhang et al. 2013).
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