Controlled adhesion of proteins to surfaces underpins many bio- and nanotechnologies. In this new work, funded by BBSRC and The Perry Foundation, we measure the effect that a straightforward oxidation of an interfacial tertiary amine to amine N-oxide has upon the adhesion of test proteins lysozyme and fibrinogen. The new process will be used to diversify surfaces in the search for new properties. In particular it may allow selective adhesion of certain microbes, but not others to different areas of surfaces, with applications in methane generation and sustainable energy production. Published in Langmuir doi:10.1021/la4003719.