Nanocomposites and their application as monolith columns
First Claim
1. A separations device comprisinga) a surface capable of accepting a monolith material comprising a polymerized scaffolding nanocomposite (PSN) material, said surface comprising an anchoring functionality andb) a hybrid inorganic/organic monolith comprising a polymerized scaffolding nanocomposite (PSN), wherein the nanocomposite contains a scaffolding functionality capable of chemically interacting with the anchoring functionality on said surface, and wherein said hybrid organic/inorganic monolith is anchored to said surface by a chemical interaction between said scaffolding functionality and anchoring functionality,wherein the hybrid inorganic/organic monolith is prepared by a method comprising:
- a) forming a sol-gel by the reaction of two or more monomers within the chromatographic device;
b) initiating a polymerization reaction; and
c) allowing the monomers to react through a polymerization sol-gel (PSG) reaction, thereby preparing the hybrid inorganic/organic monolith;
wherein the pore structure of said hybrid inorganic/organic monolith is modified by including a surfactant or combination of different surfactants in said PSG reactionwherein the surfactant is removed from the monolith structure following said PSG reaction, andwherein (a) the scaffolding functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, and combinations thereof, (b) wherein the anchoring functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, azo compounds, and combinations thereof, or (c) both (a) and (b).
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Accused Products
Abstract
Novel materials for chromatographic separations, processes for their preparation, and separation devices containing the chromatographic materials. In particular, hybrid inorganic/organic monolith materials comprising a polymerized scaffolding nanocomposite (PSN), wherein the nanocomposite contains a scaffolding functionality capable of chemically interacting with a surface of a second material are described. The hybrid inorganic/organic materials have enhanced wall adhesion and increased resistance to shrinkage as compared to prior art monolith materials. The improved adhesion of the monoliths enable the preparation of capillary columns with an internal diameter (I.D.) ≥50 μm.
19 Citations
20 Claims
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1. A separations device comprising
a) a surface capable of accepting a monolith material comprising a polymerized scaffolding nanocomposite (PSN) material, said surface comprising an anchoring functionality and b) a hybrid inorganic/organic monolith comprising a polymerized scaffolding nanocomposite (PSN), wherein the nanocomposite contains a scaffolding functionality capable of chemically interacting with the anchoring functionality on said surface, and wherein said hybrid organic/inorganic monolith is anchored to said surface by a chemical interaction between said scaffolding functionality and anchoring functionality, wherein the hybrid inorganic/organic monolith is prepared by a method comprising: -
a) forming a sol-gel by the reaction of two or more monomers within the chromatographic device; b) initiating a polymerization reaction; and c) allowing the monomers to react through a polymerization sol-gel (PSG) reaction, thereby preparing the hybrid inorganic/organic monolith; wherein the pore structure of said hybrid inorganic/organic monolith is modified by including a surfactant or combination of different surfactants in said PSG reaction wherein the surfactant is removed from the monolith structure following said PSG reaction, and wherein (a) the scaffolding functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, and combinations thereof, (b) wherein the anchoring functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, azo compounds, and combinations thereof, or (c) both (a) and (b). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A fused-silica capillary column comprising
a) a fused-silica capillary column having a cylindrical interior surface capable of accepting a monolith comprising a polymerized scaffolding nanocomposite (PSN) material, said interior surface comprising an anchoring functionality, and b) a hybrid inorganic/organic monolith comprising a polymerized scaffolding nanocomposite (PSN), wherein the nanocomposite contains a scaffolding functionality capable of chemically interacting with the anchoring functionality on said surface, and wherein said hybrid organic/inorganic monolith is anchored to said surface by a chemical interaction between said scaffolding functionality and anchoring functionality, wherein the hybrid inorganic/organic monolith is prepared by a method comprising: -
a) forming a sol-gel by the reaction of two or more monomers within the chromatographic device; b) initiating a polymerization reaction; and c) allowing the monomers to react through a polymerization sol-gel (PSG) reaction, thereby preparing the hybrid inorganic/organic monolith; wherein the pore structure of said hybrid inorganic/organic monolith is modified by including a surfactant or combination of different surfactants in said PSG reaction, wherein the surfactant is removed from the monolith structure following said PSG reaction, and wherein (a) the scaffolding functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, and combinations thereof, (b) the anchoring functionality is selected from vinyl, acrylate, methacrylate, acrylamide, methacrylamide, styrene, divinylbenzene, itaconate, fumarate, alkyne, azo compounds, and combinations thereof, or (c) both (a) and (b). - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification