Thank you for your answer. I want to functionalize graphene with o-PHENYLENEDIAMINE. So could you please guide me according to that, what will be the necessarry conditions for functionalization?
As chemical modification/functionalization, catalysts may be needed in order to activate the reaction, but , of course, you could also have a comparison between the cases with and without catalysts and then compare the results, which can lead you to know something more about the reaction.