Two of a kind but different: Luminescent carbon quantum dots from Citrus peels for iron and tartrazine sensing and cell imaging

Many of their features are alike, our findings demonstrate that each kind of the carbon quantum dots lend itself to quite distinct analytical applications

Theodoros Chatzimitakos; Athanasia Kasouni; Lamprini Sygellou; Apostolos Avgeropoulos; Anastasios Troganis; Constantine Stalikas

2017

Scholarcy highlights

  • Citrus sinensis and Citrus limon peels were used to synthesize two different kinds of carbon quantum dots via an unsophisticated and inexpensive carbonization procedure
  • Luminescent carbon dots are synthesized in a one-step procedure, from two kinds of Citrus waste peels
  • The carbon dots were used for fluorescence visualization of cancer cells and intracellular detection of Fe3+
  • The CQDs display strong excitation-independent, blue fluorescence, which is stable over time
  • Photostability and stability over a wide range of pH are some of the main advantages of the CQDs, which enable them to be used as a fluorescent probes
  • Many of their features are alike, our findings demonstrate that each kind of the CQDs lend itself to quite distinct analytical applications
  • Their low cytotoxicity reinforces their applicability towards cell bioimaging and intracellular detection of Fe3+, which were further studied

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