Porous silica substrates for polymer synthesis and assays
First Claim
1. A porous substrate for the synthesis of polymer arrays comprising:
- a support region; and
a porous region on the support region, the porous region being primarily inorganic and having a surface wherein polymers are placed such that polymer arrays are formed, the porous region comprising pores of a pore size of about 2 nm-500 nm, a porosity of about 10-80%, and a thickness of about 0.01 μ
m to about 70 μ
m.
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Abstract
Methods are provided for making and using thin films of porous silica substrates to synthesize arrays of polymers. Methods are also provided for assaying such polymers on porous silica substrates. The porous silica substrates offer an increase in array density and signal enhancement over conventional flat glass substrates. Examples of polymers that can be synthesized and assayed include biological polymers such as nucleic acids, polynucleotides, polypeptides, and polysaccharides. Arrays of nucleic acids or polynucleotides can be used for a variety of hybridization-based experiments such as nucleic acid sequence analysis, nucleic acid expression monitoring, nucleic acid mutation detection, speciation, effects of drug therapy on nucleic acid expression, among others.
183 Citations
63 Claims
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1. A porous substrate for the synthesis of polymer arrays comprising:
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a support region; and
a porous region on the support region, the porous region being primarily inorganic and having a surface wherein polymers are placed such that polymer arrays are formed, the porous region comprising pores of a pore size of about 2 nm-500 nm, a porosity of about 10-80%, and a thickness of about 0.01 μ
m to about 70 μ
m.- 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, 30, 31, 32, 33, 34)
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35. A porous substrate for the synthesis of polymer arrays comprising:
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a support region; and
a porous region on the support region, the porous region being primarily inorganic and having a surface wherein polymers are placed such that polymer arrays are formed, the porous region comprising pores of a pore size of about 2 nm-500 nm, a porosity of about 10-80%, and a thickness of about 0.01 μ
m to about 70 μ
m, wherein the porous region is formed by an additive method of codepositing a latex polymer with silica, followed by removing the latex polymer.
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36. A porous substrate comprising:
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a support region; and
a porous region on the support region, said porous region of about 0.1-0.5 microns thick, wherein the porous layer comprises an unsintered matrix formed from at least colloidal silica having a particle size of about 70-100 microns, the unsintered matrix defining at least a plurality of open pores having a pore size of about 10-20 nm, and wherein the porous layer has a porosity of about 10-80%.
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37. A porous substrate for the synthesis of polymer arrays comprising:
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a support region;
a porous region on the support region, the porous region being primarily inorganic and having a surface including an array of immobilized polymers, the porous region comprising pores of a pore size of about 2 nm to about 500 nm, a porosity of about 10% to about 80%, and a thickness of about 0.01 μ
m to about 70 μ
m.- View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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46. A porous substrate for the synthesis of polymer arrays comprising:
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a support region;
a porous region on the support region, the porous region being primarily inorganic and having a surface including an array of immobilized nucleic acids, the porous region comprising pores of a pore size of about 2 nm to about 500 nm, a porosity of about 10% to about 80%, and a thickness of about 0.01 μ
m to about 70 μ
m.- View Dependent Claims (47, 48, 49, 50, 51, 52, 53)
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Specification