| 摘要 |
A reverse phase chromatographic media selected from media of the formula: [X—C6H4—(O)m—(CH2)n]q—Z and hydrophobic end-capped media of said formula, wherein n is a numeral of from 1 to 4, and m is 0 or 1, and when m is 1 X is selected from the group H, an alkyl group having from 1 to 6 carbon atoms and a phenyl group, and when m is 0 then X is selected from an alkoxy group having from 1 to 6 carbon atoms and a phenoxy group, Z is the backbone of a silica or hydrophilic polymer chromatographic support, and q is a number equal to the number of ligands attached to the backbone of the silica or hydrophobic polymer chromatographic support, with the proviso that when said reverse phase chromatographic media of the formula is not end-capped with hydrophobic groups X is not H when m=1. These novel chromatographic media are prepared by reacting: (a) a chromatographic media support selected from (1) a silica support having hydroxyl groups on the surface of the silica backbone or (2) a hydrophilic polymer support having hydroxyl, amine or imine groups on the surface of the polymer backbone, with (b) a reactant of the formula [X—C6H4—(O)m—(CH2)n]p—Si(Y)4-p wherein p is a numeral of from 1 to 3, Y is a chloro or alkoxy group having from 1 to 4 carbon atoms in the alkoxy group, and m, n and X are as defined above, and optionally end-capping the resulting media by reacting it with a hydrophobic end-capping reactant. The resulting chromatographic media with these ligands attached to the backbone of the silica or hydrophilic polymer support provides chromatographic media that offers analyte separation capability in the aqueous mobile phase.
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