Patent ID: 6444111
Filing Date: 2002-09-03
Classification: B01J,B82Y,C07K,C40B

Abstract:
A method for electrochemical placement of a material at a specific location on a porous substrate, which comprises the steps of:providing a substrate having at its surface at least one electrode that is proximate to at least one molecule bearing at least one protected chemical functional group, placing a buffering solution in contact with the electrode and the porous substrate to prevent electrochemically generated reagents from leaving the locality of the electrode, wherein a buffering solution is one having the capacity to prevent pH changes upon addition of small amounts of acids or bases, applying a potential to said electrode sufficient to generate electrochemical reagents capable of deprotecting at least one of the protected chemical functional groups of said molecule, and bonding the deprotected chemical functional group with a monomer or a pre-formed molecule.