ABSTRACT
We report the fabrication of flavin-functionalised self-assembled monolayers upon gold electrodes and their subsequent redox modulation via hydrogen bonding to 2,6-diethylamidopyridine.
Subject(s)
Flavins/chemistry , Amides/chemistry , Electrolysis , Enzymes, Immobilized , Flavoproteins/chemistry , Hydrogen Bonding , Hydrogen-Ion Concentration , Kinetics , Molecular Structure , NADH, NADPH Oxidoreductases/chemistry , Oxidation-Reduction , Pyridines/chemistryABSTRACT
Microwave plasma deposited (100) diamond films have been thermally oxidized in dry O2 between 500 and 723 degrees C. The roughness of a single crystalline grain following oxidation is consistent with a layer-by-layer mechanism for the removal of carbon monoxide. The resulting surface exhibits infrared absorption bands at 1731 and 905 cm-1, attributed to the stretching and bending modes of a surface bonded carbonyl group. The former is within 1 cm-1 of the structurally analogous molecule 2-adamantanone. These data are consistent with the carbonyl groups being present on diamond (100) terraces.