| 摘要 |
The present invention relates to mixed-modal anion-exchange materials composed of a support on which a ligand is immobilized. The ligand combines at least one basic domain based on cyclic monobasic derivatives with two or more rings as anion-exchange domain and at least one non-ionic binding domain. The basic domain is ionized under the conditions of use and may contain secondary, tertiary, or quaternary nitrogen forming a weakly (WAX) or strongly (SAX) basic anionic exchange domains. The non-ionic binding domain allows adjustment of the overall hydrophobicity/hydrophilicity of the material and represents a second binding site for the solute to be separated. Binding to this second binding site is based on reversed phase (RP), hydrophobic interaction (HIC) or hydrophilic interaction (HILIC). Linker sites, which can be represented by a chemical bond or by hydrophobic moieties like alkyl(ene) chains or hydrophilic moieties like amide structures connect the support to the binding domains and the binding domains to each other. |
