申请人:——
公开号:US20010051703A1
公开(公告)日:2001-12-13
Chiral separations can be enhanced through the use of polymerized dipeptide-surfactant or oligopeptide-surfactant chiral micelles. Because polymerized micelles eliminate much of the complex dynamic behavior associated with conventional micelles, polymerized chiral micelles have stronger chiral recognition properties than do otherwise-identical, “conventional” or non-polymerized chiral micelles. Recovery of chiral ligands from polymerized chiral micelles is often easier, as the chiral ligands may typically be recovered by simple extraction with an appropriate organic solvent. By contrast, recovering the solute from a conventional, non-polymerized micellar medium by extraction with an organic solvent frequently results in the formation of troublesome emulsion systems. Polymerized chiral micelle systems are therefore beneficial in both preparative-scale and process-scale separations. Polymerized chiral micelles have no critical micelle concentration, allowing lower concentrations to be used in micellar electrokinetic capillary chromatography, which in turn reduces the otherwise deleterious heat that can be generated. Many polymerized dipeptide-surfactant or oligopeptide-surfactant chiral micelles have superior separation properties as compared to polymerized amino acid-surfactant chiral micelles.
通过使用聚合二肽表面活性剂或寡肽表面活性剂手性胶束,可以提高手性分离效果。由于聚合胶束消除了与传统胶束相关的许多复杂动态行为,因此聚合手性胶束比其他相同的 "传统 "或非聚合手性胶束具有更强的手性识别特性。从聚合手性胶束中回收手性配体通常更容易,因为通常只需用适当的有机溶剂进行简单萃取即可回收手性配体。相比之下,用有机溶剂萃取从传统的非聚合胶束介质中回收溶质往往会形成麻烦的乳液体系。因此,聚合手性胶束系统在制备规模和工艺规模的分离过程中都大有裨益。聚合手性胶束没有临界胶束浓度,因此可在胶束电动毛细管色谱法中使用较低浓度的胶束,从而减少可能产生的有害热量。与聚合氨基酸表面活性剂手性胶束相比,许多聚合二肽表面活性剂或寡肽表面活性剂手性胶束具有更优越的分离性能。