Permeation layer attachment chemistry and method
First Claim
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1. A method of covalently attaching a permeation layer having reactive moieties to an electrode of an electronically addressable microchip comprising:
- contacting the surface of the electrode with a linker molecule by vapor deposition wherein the linker molecule comprises a first reactive moiety that is capable of reacting with the electrode surface to form a covalent bond with the electrode, and a second reactive moiety that is capable of reacting with monomers to form the permeation layer;
reacting the first moiety of the linker molecule with the electrode surface to form a covalent bond between the linker molecule and the electrode surface;
synthesizing the permeation layer by reacting the linker molecule with monomers under conditions where polymerization is conducted between the monomers and the second reactive moiety of the linker;
wherein the resulting covalent attachment between the electrode and the linker and the permeation layer material is stable at a current density of at least 0.10 nA/μ
m2.
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Abstract
Electronically addressable microchips having covalently bound permeation layers and methods of making such covalently bonded permeation layers to microchips are provided. The covalent bonding is derived from combining the use of electrodes with silane derivatives. Such chemistry provides the ability to apply an electronic bias to the electrodes of the microchip while preventing permeation layer delaminating from the electrode surface. Methods for covalently attaching the permeation layer to the microchips are also described.
102 Citations
29 Claims
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1. A method of covalently attaching a permeation layer having reactive moieties to an electrode of an electronically addressable microchip comprising:
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contacting the surface of the electrode with a linker molecule by vapor deposition wherein the linker molecule comprises a first reactive moiety that is capable of reacting with the electrode surface to form a covalent bond with the electrode, and a second reactive moiety that is capable of reacting with monomers to form the permeation layer;
reacting the first moiety of the linker molecule with the electrode surface to form a covalent bond between the linker molecule and the electrode surface;
synthesizing the permeation layer by reacting the linker molecule with monomers under conditions where polymerization is conducted between the monomers and the second reactive moiety of the linker;
wherein the resulting covalent attachment between the electrode and the linker and the permeation layer material is stable at a current density of at least 0.10 nA/μ
m2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification