We are developing graphene derivatives by physical functionalization. The products are believed to be composed of graphene core surrounded by functional groups which are helping out the solubility of material in certain kind of solvents. These functional groups are cleavage under high heat and or irradiation to render pure graphene. The differentiated physical properties of the graphene precursor under energy sources could be used for printing technologies.
Khe C. Nguyen, "Soluble Graphene and Printing" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP31), 2015, pp 277 - 279, https://doi.org/10.2352/ISSN.2169-4451.2015.31.1.art00061_1