Novel imidazolium-embedded and imidazolium-spaced octadecyl stationary phases for reversed phase liquid chromatography

被引:46
作者
Zhang, Mingliang [1 ,2 ,3 ]
Chen, Jia [1 ,2 ]
Gu, Tongnian [1 ,2 ]
Qiu, Hongdeng [1 ,2 ]
Jiang, Shengxiang [1 ,2 ]
机构
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China
[3] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
Polar-embedded; Polar-spaced; Surface-confined ionic liquid; Reversed-phase liquid chromatography; Linear solvation energy relationships; SOLVATION ENERGY RELATIONSHIPS; CONFINED IONIC-LIQUID; RETENTION CHARACTERISTICS; RP-HPLC; SOLVENT PROPERTIES; ANION-EXCHANGE; SOLID-PHASE; SELECTIVITY; PERFORMANCE; SILICA;
D O I
10.1016/j.talanta.2014.03.057
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Two new stationary phases modified by alkylimidazoliums were prepared for the first time and characterized. One of the new phases was obtained via monomeric immobilization of octadecylimidazole to gamma-chloropropyltrimethoxysilane modified silica to form polar-embedded phase; the other one was prepared by co-immobilization of two silane coupling agents (gamma-chloropropyltrichlorosilane and octadecyltrichlorosilane) to silica, followed by quaternization of methylimidazole to form polar-spaced phase. This study was intended to compare the retention characteristics of these two stationary phases using linear solvation energy relationships model, as well as to examine the difference in selectivity by eluting alkylbenzenes, alkylnaphthalenes, condensed-ring and phenylene polynuclear aromatic hydrocarbons on both phases. Different effects of distributions of polar functional group and octadecyl chain were found to impact the chromatographic properties. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:177 / 184
页数:8
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