文献类型：期刊文献

英文题名：Facile preparation and upconversion luminescence of graphene quantum dots

作者：Shen, Jianhua[1];Zhu, Yihua[1];Chen, Cheng[1];Yang, Xiaoling[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：47

期号：9

起止页码：2580

外文期刊名：CHEMICAL COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000287409800027)】；

基金：This work was supported by the National Natural Science Foundation of China (20925621, 20976054), the Key Project of Science and Technology for Ministry of Education (107045), the Innovation Program of Shanghai Municipal Education Commission (09ZZ58), the Program of Shanghai Subject Chief Scientist (08XD1401500), the Shuguang Scholar-Tracking Foundation of Shanghai (08GG09), the Fundamental Research Funds for the Central Universities, and the Program for Changjiang Scholars and Innovative Research Team in University (IRT0825).

语种：英文

摘要：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 delta E between the pi and sigma orbitals is near 1.1 eV.