  Local curvature, or bending, of a graphene sheet is known to increase the
chemical reactivity presenting an opportunity for templated chemical
functionalization. Using first principles calculations based on density
functional theory (DFT) we investigate the reduction of the reaction barrier
for adsorption of atomic hydrogen at linear bends in graphene. We find a
significant lowering (15%) for realistic radii of curvature (20 {\AA}), and
that adsorption along the linear bend leads to a stable linear kink. We compute
the electronic transport properties of individual and multiple kink-lines, and
demonstrate how these act as efficient barriers for electron transport. In
particular, two parallel kink-lines form a graphene pseudo-nanoribbon structure
with a semi-metallic/semi-conducting electronic structure closely related to
the corresponding isolated ribbons; the ribbon band gap translates into a
transport gap for transport across the kink lines. We finally consider
pseudo-ribbon based heterostructures, and propose that such structures present
a novel approach for band gap engineering in nanostructured graphene.
