title: Graphene/Ionic liquid composite films and ion exchange.
abstract: Wettability of graphene is adjusted by the formation of various ionic surfaces combining ionic liquid (IL) self-assembly with ion exchange. The functionalized ILs were designed and synthesized with the goal of obtaining adjustable wettability. The wettability of the graphene surface bearing various anions was measured systematically. The effect of solvent systems on ion exchange ratios on the graphene surface has also been investigated. Meanwhile, the mechanical properties of the graphene/IL composite films were investigated on a nanometer scale. The elasticity and adhesion behavior of the thin film was determined with respected to the indentation deformation by colloid probe nanoindentation method. The results indicate that anions played an important role in determining graphene/IL composite film properties. In addition, surface wetting and mechanics can be quantitatively determined according to the counter-anions on the surface. This study might suggest an alternate way for quantity detection of surface ions by surface force.
authors: 1] Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, P. R. China [2] School of Engineering & Applied Science, The George Washington University, Washington DC, 20052, United States.
authors: Yufei
authors: Y
authors: Mo
authors: School of Engineering & Applied Science, The George Washington University, Washington DC, 20052, United States.
authors: Yunfang
authors: Y
authors: Wan
authors: School of Engineering & Applied Science, The George Washington University, Washington DC, 20052, United States.
authors: Alicia
authors: A
authors: Chau
authors: Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, P. R. China.
authors: Fuchuan
authors: F
authors: Huang