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学科主题物理化学
Study of surface-bonded dicationic ionic liquids as stationary phases for hydrophilic interaction chromatography
Qiao, Lizhen; Li, Hua; Shan, Yuanhong; Wang, Shuangyuan; Shi, Xianzhe; Lu, Xin; Xu, Guowang; Shi XZ(石先哲); Xu GW(许国旺)
关键词DicatIonic Ionic Liquid Hydrophilic Interaction Chromatography Stationary Phase Ion Exchange Click Chemistry
刊名JOURNAL OF CHROMATOGRAPHY A
2014-02-21
DOI10.1016/j.chroma.2014.01.020
1330期:1页:40-50
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]REVERSED-PHASE ; MOBILE-PHASE ; RETENTION CHARACTERISTICS ; POLAR COMPOUNDS ; ANION-EXCHANGE ; SEPARATION ; PERFORMANCE ; BEHAVIOR ; SELECTIVITY ; STABILITY
英文摘要In the present study, several geminal dicationic ionic liquids based on 1,4-bis(3-allylimidazolium)butane and 1,8-bis(3-allylimidazolium)octane in combination with different anions bromide and bis(trifluoromethanesulphonyl)imide were prepared and then bonded to the surface of 3-mercaptopropyl modified silica materials through the "thiol-ene" click chemistry as stationary phases for hydrophilic interaction chromatography (HILIC). Compared with their monocationic analogues, the dicationic ionic liquids stationary phases presented effective retention and good selectivity for typical hydrophilic compounds under HILIC mode with the column efficiency as high as 130,000 plates/m. Moreover, the influence of different alkyl chain spacer between dications and combined anions on the retention behavior and selectivity of the dicationic ionic liquids stationary phases under HILIC mode was displayed. The results indicated that the longer linkage chain would decrease the hydrophilicity and retention on the dicationic ionic liquid stationary phase, and while differently combined anions had no difference due to the exchangeability under the common HILIC mobile phase with buffer salt. Finally, the retention mechanism was investigated by evaluating the effect of chromatographic factors on retention, including the water content in the mobile phase, the mobile phase pH and buffer salt concentration. The results showed that the dicationic ionic liquids stationary phases presented a mixed-mode retention behavior with HILIC mechanism and anion exchange. (C) 2014 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000331688400006
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/144486
专题中国科学院大连化学物理研究所
通讯作者Shi XZ(石先哲); Xu GW(许国旺)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Qiao, Lizhen,Li, Hua,Shan, Yuanhong,et al. Study of surface-bonded dicationic ionic liquids as stationary phases for hydrophilic interaction chromatography[J]. JOURNAL OF CHROMATOGRAPHY A,2014,1330(1):40-50.
APA Qiao, Lizhen.,Li, Hua.,Shan, Yuanhong.,Wang, Shuangyuan.,Shi, Xianzhe.,...&许国旺.(2014).Study of surface-bonded dicationic ionic liquids as stationary phases for hydrophilic interaction chromatography.JOURNAL OF CHROMATOGRAPHY A,1330(1),40-50.
MLA Qiao, Lizhen,et al."Study of surface-bonded dicationic ionic liquids as stationary phases for hydrophilic interaction chromatography".JOURNAL OF CHROMATOGRAPHY A 1330.1(2014):40-50.
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