Synthesis and Crystal Structure of New Sulfate-Bridged Coordination Polymer, {(4,4bpyH2)[Fe3(4,4-bpy)3(So4)4(H2O)}n(4,4-bpy=4,4-Bipyridine). Three-Dimensional Network with Microporous Channels

The interaction between avidin and biotin as self-assembled monolayer on a gold electrode surface was electrochemically evaluated by monitoring the changes in the electrode response of the ferrocyanide ion as redox-marker. It was clarified that the permeability changes of avidin membrane introduced onto the biotin self-assembled monolayer against ferrocyanide ion were ascribed to electrostatic interaction between avidin and marker ion.