Surface immobilization of biopolymers
First Claim
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1. A biopolymer-containing monolayer comprising:
- a metal substrate;
a plurality of thiol-derivatized oligonucleotides bound to said substrate by a sulfur-substrate linkage, said thiol-derivatized oligonucleotides having the formula;
space="preserve" listing-type="equation">HS--X--YwhereX is either nothing or an organic linker, andY comprises an oligonucleotide terminally bound to X where X is an organic linker or terminally bound to S where X is nothing; and
a plurality of organic thiols bound to said substrate, wherein said plurality of bound thiol-derivatized boligonucleotides and said plurality of bound organic thiols comprise a mixed monolayer.
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Abstract
In one embodiment, the present invention provides a biopolymer-containing monolayer comprising: thiol-derivatized biopolymers and organic thiols bound to a metal substrate. In another embodiment, the present invention provides a method for forming this biopolymer-containing monolayer. Preferably, the biopolymers are single-stranded DNA probes.
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22 Claims
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1. A biopolymer-containing monolayer comprising:
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a metal substrate; a plurality of thiol-derivatized oligonucleotides bound to said substrate by a sulfur-substrate linkage, said thiol-derivatized oligonucleotides having the formula;
space="preserve" listing-type="equation">HS--X--Ywhere X is either nothing or an organic linker, and Y comprises an oligonucleotide terminally bound to X where X is an organic linker or terminally bound to S where X is nothing; and a plurality of organic thiols bound to said substrate, wherein said plurality of bound thiol-derivatized boligonucleotides and said plurality of bound organic thiols comprise a mixed monolayer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for forming a biopolymer-containing monolayer comprising the steps of:
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applying a solution comprising thiol-derivatized oligonucleotides to a substrate comprising a metal to bind said thiol-derivatized oligonucleotides thereto by a sulfur-substrate linkage, the thiol-derivatized oligonucleotides having the formula;
space="preserve" listing-type="equation">HS--X--Ywhere X is either nothing or an organic linker; and Y comprises an oligonucleotide terminally bound to X where X is an organic linker or terminally bound S where X is nothing; and applying a solution comprising an organic thiol to displace nonspecifically adsorbed oligonucleotides and to prevent nonspecific adsorption of oligonucleotides. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification