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题名: Capillary electrochromatographic separation of enantiomers on chemically bonded type of cellulose derivative chiral stationary phases with a positively charged spacer
作者: Chen, XM;  Jin, WH;  Qin, F;  Liu, YQ;  Zou, HF;  Guo, BC
关键词: capillary electrochromatography ;  cellulose derivative ;  chiral stationary phase
刊名: ELECTROPHORESIS
发表日期: 2003-08-01
DOI: 10.1002/elps.200305484
卷: 24, 期:15, 页:2559-2566
收录类别: SCI
文章类型: Article
部门归属: 1809
项目归属: 1809
产权排名: 1;1
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
英文摘要: Positively charged chiral stationary phases (CSPs) were prepared for capillary electrochromatography (CEC) separation of enantiomers by chemically immobilizing cellulose derivatives onto diethylenetriaminopropylated silica (DEAPS) with tolylene-2,4-diisocyanate (TDI) as a spacer reagent. Anodic electroosmotic mobility was observed in both nonaqueous and aqueous mobile phases due to the positively charged amines on the surface of the prepared CSPs. For comparison, the traditionally used 3-aminopropyl silica (APS) was also adopted as the base material instead of DEAPS to prepare CSP. It was observed that the EOF on the DEAPS-based CSP was 18%-60% higher than that on the APS-based CSP under nonaqueous mobile phase conditions. Separation of enantiomers in CEC was performed on the positively charged CSPs with the nonaqueous mobile phases of pure ethanol or mixture of hexane-alcohol and the aqueous phases of acetonitrile-water or 95% ethanol. Fast separation of enantiomers was achieved on the newly prepared CSPs.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  SILICA-GEL ;  ENANTIOSEPARATIONS ;  SIZE ;  TRIS(3,5-DICHLOROPHENYLCARBAMATE) ;  PORE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000184932400019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/83423
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116011, Peoples R China

Recommended Citation:
Chen, XM,Jin, WH,Qin, F,et al. Capillary electrochromatographic separation of enantiomers on chemically bonded type of cellulose derivative chiral stationary phases with a positively charged spacer[J]. ELECTROPHORESIS,2003,24(15):2559-2566.
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