“…Graphene can be functionalized by a plethora of organic reactions affording interesting derivatives [ 3 ]. Therefore, graphene and its derivatives have been investigated in a great variety of applications, including sensors [ 4 , 5 , 6 ], conductive inks [ 7 , 8 ], bioapplications [ 9 ], batteries, and supercapacitors [ 10 , 11 , 12 ], etc. In most of these applications, the 2D structured graphene nanosheets are necessary to be combined with bulk materials such as polymers, ceramics, or metals.…”