Nanoparticles as scaffolds for FRET-based ratiometric detection of mercury ions in water with QDs as donors.

@article{Liu2012NanoparticlesAS,
  title={Nanoparticles as scaffolds for FRET-based ratiometric detection of mercury ions in water with QDs as donors.},
  author={Baoyu Liu and Fang Zeng and Guangfei Wu and Shuizhu Wu},
  journal={The Analyst},
  year={2012},
  volume={137 16},
  pages={
          3717-24
        }
}
The quenching of quantum dots' emission by some analytes (Hg(2+), Pb(2+), etc.) has long been hindering the fabrication of QD-based 'turn-on' or ratiometric fluorescent sensors for these analytes. In this study, we demonstrate a facile solution for constructing a robust FRET-based ratiometric sensor for Hg(2+) detection in water with CdTe QDs as the donor. By using the reverse microemulsion approach, CdTe QDs were first embedded into nanosized silica particles, forming the QDs/silica cores, a… CONTINUE READING

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