Facile preparation and upconversion luminescence of graphene quantum dots

Jianhua Shen; Yihua Zhu; Cheng Chen; Xiaoling Yang; Chunzhong Li

doi:10.1039/c0cc04812g

Facile preparation and upconversion luminescence of graphene quantum dots

Chem Commun (Camb). 2011 Mar 7;47(9):2580-2. doi: 10.1039/c0cc04812g. Epub 2010 Dec 21.

Authors

Jianhua Shen¹, Yihua Zhu, Cheng Chen, Xiaoling Yang, Chunzhong Li

Affiliation

¹ Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.

PMID: 21173992
DOI: 10.1039/c0cc04812g

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Graphite / chemistry*
Hydrazines / chemistry
Oxidation-Reduction
Polyethylene Glycols / chemistry
Quantum Dots*
Quantum Theory
Spectrophotometry, Ultraviolet

Substances

Hydrazines
hydrazine
Polyethylene Glycols
Graphite