Hybrid Chromatographic Core with Condensed Surface for pH Stability
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Solution Overview
Problem
Current packing materials for liquid chromatography, particularly organic materials, suffer from low efficiency, mechanical weakness, and instability when exposed to varying mobile phase compositions, limiting their application in chromatographic separations of small molecules and proteins.
Innovation Solution
Development of inorganic/organic hybrid chromatographic materials with a porous hybrid core and a surrounding material that can be condensed to enhance chromatographic selectivity, chemical stability, and mechanical strength, allowing for unique separations of small molecules, proteins, and DNA through controlled hydrophobicity and surface charge modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If organic packing materials are used, then chemical stability against strongly alkaline and strongly acidic mobile phases is improved, but column efficiency and mechanical strength deteriorate
Solution Approach 1:
The patent applies composite materials by combining organic and inorganic components to create hybrid packing materials that exhibit both the chemical stability of organic materials and the high efficiency and mechanical strength of inorganic materials. The hybrid structure integrates the advantages of both material types to resolve the contradiction between chemical stability and column efficiency.
2Stability of the object's composition
If organic packing materials are used, then chemical stability is improved, but mechanical strength deteriorates
Solution Approach 1:
The hybrid packing material combines organic and inorganic components where the inorganic phase provides mechanical strength while the organic phase provides chemical stability. This composite structure allows the material to withstand high pressures and maintain integrity while resisting degradation from extreme pH conditions.
3Adaptability or versatility
If organic packing materials are used, then flexibility in mobile phase pH choice is improved, but column efficiency deteriorates
Solution Approach 1:
The hybrid material maintains the pH flexibility of organic materials while incorporating inorganic components that provide high column efficiency. The composite structure allows the packing material to perform well across a wide pH range while delivering sharp peaks and high resolution separations.
4Manufacturing precision
If silica is used as packing material, then column efficiency is improved, but chemical stability against strongly alkaline mobile phases deteriorates
Solution Approach 1:
The hybrid packing material combines silica's high efficiency properties with organic components that provide resistance to strongly alkaline mobile phases. The organic phase protects the silica structure from alkaline degradation while maintaining the pore structure necessary for high column efficiency.
5Manufacturing precision
If silica is used as packing material, then column efficiency is improved, but mechanical strength under varying mobile phase composition deteriorates
Solution Approach 1:
The hybrid structure combines silica with organic materials to create a composite that maintains mechanical strength when mobile phase composition changes. The organic component provides structural support that prevents silica from shrinking or swelling excessively during solvent transitions, maintaining column integrity and efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The hybrid materials provide improved chromatographic selectivity, stability, and efficiency, enabling effective separations of small molecules, proteins, and DNA by modulating hydrophobicity and surface charge, addressing the limitations of existing organic materials.
Implementation Method 1
The preparation of the inorganic/organic hybrid materials of the invention wherein a surrounding material is condensed on a porous hybrid core material
Implementation Method 2
Differences in hydrophobicity, ion-exchange capacity, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and/or DNA
Data Source
AI summary
The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for their preparation and separations devices containing the chromatographic materials. The preparation of the inorganic/organic hybrid materials of the invention wherein a surrounding material is condensed on a porous hybrid core material will allow for families of different hybrid packing materials to be prepared from a single core hybrid material. Differences in hydrophobicity, ion-exchange capacity, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and/or DNA.