Covalent functionalization of graphene oxide by 9-(4-aminophenyl)acridine and its derivatives

Graphene/acridine (G-Acr) hybrid structures were synthesized through covalent functionalization of graphene oxide with 9-(4-aminophenyl)acridine (APA) and its derivatives. The G-Acr hybrids were characterized by Fourier transform infrared spectroscopy, ultraviolet visible spectrophotometry, thermal gravimetric analysis and Raman spectroscopy. X-ray photoelectron spectroscopy confirms that the binding energies of APA and its derivatives shifted to higher values, revealing pronounced charge transfer at the interface of graphene and organic molecules. (C) 2012 Hua Jian Xu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.