CHROMATOGRAPHIC MATERIALS

摘要

The present invention provides a chromatographic stationary phase material various different types of chromatography. One example chromatographic stationary phase is represented by Formula 1 [X](W)a(Q)b(T)c (Formula 1). X can be a high purity chromatographic core composition. W can be absent and/or can include hydrogen and/or can include hydroxyl on the surface of X. Q can be bound directly to X and can include a first hydrophilic, polar, ionizable, and/or charged functional group that chromatographically interacts with the analyte. T can be bound directly to X and can include a second hydrophilic, polar, ionizable, and/or charged functional group that chromatographically interacts with the analyte. Additionally, Q and T can essentially eliminate chromatographic interaction between the analyte, and X and W, thereby minimizing retention variation over time (drift or change) under chromatographic conditions utilizing low water concentrations.

主权项

1. A chromatographic stationary phase material for normal phase chromatography, high-pressure liquid chromatography, solvated gas chromatography, supercritical fluid chromatography, sub-critical fluid chromatography, carbon dioxide based chromatography, hydrophilic interaction liquid chromatography or hydrophobic interaction liquid chromatography represented by Formula 1:
[X](W)a(Q)b(T)c  Formula 1 wherein: X is a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof; W is absent and/or includes hydrogen and/or includes hydroxyl on the surface of X; Q is bound directly to X and comprises a first hydrophilic, polar, ionizable, and/or charged functional group that chromatographically interacts with the analyte; T is bound directly to X and comprises a second hydrophilic, polar, ionizable, and/or charged functional group that chromatographically interacts with the analyte; and Q and T essentially eliminate chromatographic interaction between the analyte, and X and W, thereby minimizing retention variation over time (drift) under chromatographic conditions utilizing low water concentrations.