Carbon-dot-based dual-emission silica nanoparticles as a ratiometric fluorescent probe for Bisphenol A.
A simple and effective strategy for designing a ratiometric fluorescent nanosensor is described in this work. A carbon dots (CDs) based dual-emission nanosensor for Bisphenol A (BPA) was prepared by coating CDs on the surface of dye-doped silica nanoparticles. The fluorescence of dual-emission silica nanoparticles was quenched in hydrochloric acid by potassium bromate (KBrO3) oxidation; BPA inhibited KBrO3 oxidation, resulting in the ratiometric fluorescence response of dual-emission silica nanoparticles. Several important parameters affecting the performance of the nanosensor were investigated and optimized. The detection limit of this nanosensor was 0.80ng mL-1 with a linear range from 10 to 500ng mL-1. This was applied successfully to determine BPA in the leached solution of different plastic products with satisfactory results.
['Xiang|Guo-Qiang|GQ|', 'Ren|Yue|Y|', 'Xia|Yin|Y|', 'Mao|Wenjie|W|', 'Fan|Chao|C|', 'Guo|Si-Yu|SY|', 'Wang|Pan-Pan|PP|', 'Yang|Deng-Hui|DH|', 'He|Lijun|L|', 'Jiang|Xiuming|X|']
Silica nanoparticles Ratiometric fluorescent probe Carbon dots Bisphenol A