Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.
Chem Commun (Camb). 2011 Mar 7;47(9):2580-2. doi: 10.1039/c0cc04812g. Epub 2010 Dec 21.
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.
提出了一种简便的水合肼还原氧化石墨烯（GO）的方法，通过表面封端的聚乙二醇（PEG）方法制备具有上转换发射的石墨烯量子点（GQDs）。我们推测上转换发光是由于反斯托克斯光致发光（ASPL），其中π和σ轨道之间的δE 接近 1.1 eV。
