申请人:Liu Xiaodong
公开号:US20080293959A1
公开(公告)日:2008-11-27
The current invention provides compositions, which are useful as stationary phases for a variety of chromatographic applications, such as high performance liquid chromatography (HPLC). The compositions include a substrate (e.g., silica gel), covalently bound to a compound, which includes both a hydrophobic moiety and a hydrophilic moiety, which is preferably a 1,2-diol moiety. The hydrophobic moiety is sufficiently hydrophobic for the compositions to exhibit reversed phase characteristics and typically incorporates at least 5 carbon atoms in sequence. Based on having both hydrophilic and hydrophobic functionalities, the new stationary phases exhibit unique chromatographic properties. For example, these media can be used in either hydrophilic (HILIC) mode, in which the mobile phase includes a high percentage of an organic solvent, or in reversed phase mode, in which the mobile phase contains a higher percentage of an aqueous solvent. The current invention also provides methods of making and using the compounds and compositions of the invention.
本发明提供了一种用于各种色谱应用(例如高效液相色谱(HPLC))的固定相组成物。该组成物包括一个底物(例如硅胶),与一个化合物共价结合。该化合物包括一个疏水基团和一个亲水基团,最好是1,2-二醇基团。疏水基团足够疏水,使得组成物表现出反相特性,通常包含至少5个碳原子。由于具有亲水和疏水功能,新的固定相具有独特的色谱特性。例如,这些介质可以在亲水模式(HILIC)中使用,在该模式下,流动相包括高比例的有机溶剂,也可以在反相模式下使用,在该模式下,流动相含有更高比例的水溶剂。本发明还提供了制备和使用该发明的化合物和组成物的方法。