Biofunctional porous silicon micropatterns engineered through visible light activated epoxy capping and selective plasma etching

摘要: Abstract Porous silicon (PSi) is a versatile matrix with tailorable surface reactivity, which allows processing diversity of biofunctional structures. An assembly process has been activated by catalyzing PSi oxidation visible light, enabling subsequent binding (3-glycidyloxypropyl)-trimethoxy-silane (GPTMS) in the submonolayer regime. A multispectroscopic approach followed to fully characterize capped PSi. XPS used trace light induced and GPTMS on supported Field emission SEM confirms that topography not modified assembly. To complement chemical analysis bound GPTMS, FTIR solid state NMR were functionalized particles. Finally, surfaces have successfully micropatterned masked Ar plasma etching process. The gives rise hydrophilic/hydrophobic contrasts, are efficient selective gold nanoparticles. contrasts applied local recognition mouse serum proteins adsorbed through an immunofluorescence assay. results confirm effectiveness as adsorptive layer for immunosensing.