Patent ID: 7887691
Filing Date: 2011-02-15
Classification: B01J,B82Y,C12Q,C40B

Abstract:
1. A method of forming coatings of at least two different coating molecules on at least two electrodes, the method comprising: (a) providing an array of at least two individually-addressable electrodes, (b) allowing a layer of a masking molecule to adsorb onto all electrodes, (c) inducing electrochemical desorption of the masking molecule from at least one but not all electrodes to expose a first set of exposed electrodes, (d) allowing a first coating molecule to adsorb onto the first set of exposed electrodes, thereby generating a first set of coated electrodes, (e) exposing all electrodes, including the first set of coated electrodes, to a masking molecule to allow adsorption of the masking molecule onto all electrodes, including the first set of coated electrodes, (f) inducing electrochemical desorption of masking molecule from a second set of electrodes to expose a second set of exposed electrodes, (g) allowing a second coating molecule to adsorb onto the second set of exposed electrodes; wherein the first coating molecule and the second coating molecule each have a molecular weight greater than or equal to 800 Da; and wherein the masking molecule has a molecular weight less than or equal to 500 Da.