Graphitic carbon quantum dots as a fluorescent sensing platform for highly efficient detection of Fe3+ ions

Reported here is a green synthesis of graphitic carbon quantum dots as a fluorescent sensing platform for the highly sensitive and selective detection of Fe3+ ions

Yong-Lai Zhang; Lei Wang; Heng-Chao Zhang; Yang Liu; Hai-Yu Wang; Zhen-Hui Kang; Shuit-Tong Lee

2013

Scholarcy highlights

  • Reported here is a green synthesis of graphitic carbon quantum dots as a fluorescent sensing platform for the highly sensitive and selective detection of Fe3+ ions
  • The oxygen functional groups contribute to the water solubility and strong interaction with metal ions, which enable the GCQDs to serve as a fluorescent probe for the highly sensitive and selective detection of Fe3+ ions with a detection limit as low as 2 nM
  • The high sensitivity of our GCQDs could be attributed to the formation of complexes between Fe3+ ions and the phenolic hydroxyls of GCQDs
  • The fluorescence lifetime of GCQDs in the presence and absence of Fe3+ was tested by time-correlated single-photon counting, which confirmed a dynamic fluorescence quenching mechanism
  • This article is part of the themed collection: Sensors for health and happiness

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