Chemical functionalization of new C-allotropes such as the 2D-graphene is of fundamental
interest and opens the door to unprecedented materials applications. We will report on the
development of efficient functionalization protocols for graphene using both covalent and
non-covalent approaches. In particular, the reductive functionalization of graphene allows for
the attachment of a variety of functional systems such as porphyrines and fullerenes to the
basal plane. A fundamental challenge of graphene functionalization is the spatially resolved
covalent patterning of this 2D-system. We will also emphasize our recent success in this
direction. We have demonstrated that both mask assisted patterning of graphene and laser
writing can be used and even be combined to generate hierarchically ordered multifunctional
2D-architectures. The potential of practical applications is enormous. This includes chemical
information storage exemplified by complete write/read/erase cycles. Moreover, we will
present our recent on the chemical functionalization of other 2D-materials such as particular
black phosphorus (BP) and MoS2.