Hydrothermal treatment of grass: a low-cost, green route to nitrogen-doped, carbon-rich, photoluminescent polymer nanodots as an effective fluorescent sensing platform for label-free detection of Cu(II) ions.

@article{Liu2012HydrothermalTO,
  title={Hydrothermal treatment of grass: a low-cost, green route to nitrogen-doped, carbon-rich, photoluminescent polymer nanodots as an effective fluorescent sensing platform for label-free detection of Cu(II) ions.},
  author={Sen Liu and Jingqi Tian and Lei Wang and Yingwei Zhang and Xiaoyun Qin and Yonglan Luo and Abdullah M. Asiri and Abdulrahman A O Al-Youbi and Xuping Sun},
  journal={Advanced materials},
  year={2012},
  volume={24 15},
  pages={2037-41}
}
Increasing reaction temperature produces photoluminescent polymer nanodots (PPNDs) with decreased particle size and increased quantum yield. Such PPNDs are used as an effective fluorescent sensing platform for label-free sensitive and selective detection of Cu(II) ions with a detection limit as low as 1 nM. This method is successfully applied to determine Cu(2+) in real water samples. 
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