We report on the adsorption dynamics of phospholipid membranes on
graphene-coated substrates using the quartz crystal microbalance with
dissipation monitoring (QCM-D) technique. We compare the lipid vescle
interaction and membranne formation on gold and silicon dioxide QCM crystal
surfaces with their graphene oxide (GO) and reduced (r)GO coated counterparts,
and report on the different lipid structures obtained. We establish graphene
derivative coatings as support surfaces with tuneable hydrophobicity for the
formation of controllable lipid structures. One structure of interest formed
are lipid monolayer membrannes which were formed on rGO, which are otherwise
challenging to produce. We also demonstrate and monitor biotin-avidin binding
on such a membranne, which will then serve as a platform for a wide range of
biosensing applications. The QCM-D technique could be extended to both
fundamental studies and applications of other covalent and non-covalent
interactions in 2-dimensional materials
