To effectively use TEMPO as an anti-biofouling agent, the capability to coat the surface of a wide range of materials and preserve the nitroxide moiety is required. Recently, plasma polymerisation has been shown to fulfil these requirements . Plasma polymerisation is a onestep, solvent-free, and energy-efficient process to coat surfaces with thin, functional films of organic molecules without altering the substrate material bulk properties. As a result, it is exceptionally versatile across a wide range of industrial applications such as antifouling , biomolecule immobilisation , water purification , electronics , and green energy . Although plasma polymerisation is considered a mature technology, many fundamental questions remain around the initial growth stages and the uniformity and ordering within the polymer layers.