Luminescent carbon dots promise practical applications

Lewotsky, Kristin

doi:10.1117/2.2201403.01

Cited by 1 publication

(3 citation statements)

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“…GQDs have soon found application as nanolights for bioimaging, 32,33 sensitizers for photocatalytic systems, 34 and they are envisaged to support a full gamut of practical applications, ranging from road signs and fluorescent clothing to biological markers in medical research. 35 3…”

Section: Introductionmentioning

confidence: 99%

“…GQDs have quickly found application as nanolights for bioimaging 32,33 and sensitizers for photocatalytic systems, 34 and they are envisaged to support a full gamut of practical applications, ranging from road signs and fluorescent clothing to biological markers in medical research. 35 In a recent paper we have demonstrated that, using a simple electrochemical (EC) procedure starting from GO electrodes, GOQD solutions can be easily prepared. 36 Here we report a further development of this method providing a systematic description of the preparation and characterization of singly (B and N) and multiply doped (N and B) GOQDs.…”

Section: Introductionmentioning

confidence: 99%

“…This high versatility in the design of complex systems and the easy tunability of their physical properties have generated an immediate interest in the scientific community. GQDs have quickly found application as nanolights for bioimaging , and sensitizers for photocatalytic systems, and they are envisaged to support a full gamut of practical applications, ranging from road signs and fluorescent clothing to biological markers in medical research …”

Section: Introductionmentioning

confidence: 99%

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Single and Multiple Doping in Graphene Quantum Dots: Unraveling the Origin of Selectivity in the Oxygen Reduction Reaction

et al. 2014

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Singly and multiply doped graphene oxide quantum dots have been synthesized by a simple electrochemical method using water as solvent. The obtained materials have been characterized by photoemission spectroscopy and scanning tunneling microscopy, in order to get a detailed picture of their chemical and structural properties. The electrochemical activity toward the oxygen reduction reaction of the doped graphene oxide quantum dots has been investigated by cyclic voltammetry and rotating disk electrode measurements, showing a clear decrease of the overpotential as a function of the dopant according to the sequence: N ∼ B > B,N. Moreover, assisted by density functional calculations of the Gibbs free energy associated with every electron transfer, we demonstrate that the selectivity of the reaction is controlled by the oxidation states of the dopants: as-prepared graphene oxide quantum dots follow a two-electron reduction path that leads to the formation of hydrogen peroxide, whereas after the reduction with NaBH4, the same materials favor a four-electron reduction of oxygen to wate

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Section: Introductionmentioning

confidence: 99%