Facile preparation and upconversion luminescence of graphene quantum dots

Facile preparation and upconversion luminescence of graphene quantum dots

A facile hydrazine hydrate reduction of graphene oxide (GO) with surface-passivated by a polyethylene glycol (PEG) method for the fabrication of graphene quantum dots (GQDs) with frequency upconverted emission is presented. And we speculate on the upconversion luminescence due to the anti-Stokes pho...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2011-01, Vol.47 (9), p.2580-2582
Hauptverfasser: Shen, Jianhua, Zhu, Yihua, Chen, Cheng, Yang, Xiaoling, Li, Chunzhong
Format: Artikel
Sprache:eng
Schlagworte:
Graphene
Graphite - chemistry
Hydrates
Hydrazines
Hydrazines - chemistry
Luminescence
Oxidation-Reduction
Oxides
Polyethylene glycol
Polyethylene Glycols - chemistry
Quantum Dots
Quantum Theory
Spectrophotometry, Ultraviolet
Upconversion
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Zusammenfassung:A facile hydrazine hydrate reduction of graphene oxide (GO) with surface-passivated by a polyethylene glycol (PEG) method for the fabrication of graphene quantum dots (GQDs) with frequency upconverted emission is presented. And we speculate on the upconversion luminescence due to the anti-Stokes photoluminescence (ASPL), where the δE between the π and σ orbitals is near 1.1 eV.
ISSN:1359-7345
1364-548X
DOI:10.1039/c0cc04812g