Liquid-liquid/solid three-phase high-speed counter-current chromatography based on O-carboxymethyl chitosan-functionalized multi-walled carbon nanotubes as solvent additive

被引：5
|
作者：
Liu, Yanjuan [1 ,2 ,3 ]
Liu, Yongfeng [1 ,2 ]
Wang, Gaohong [1 ,2 ,3 ]
Di, Duolong [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, Grad Univ, Beijing 100049, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 50期
关键词：
TARGETED DELIVERY; SEPARATION; SYSTEM; ACID; PERFORMANCE; COMPONENTS; LAYER; FILM;
D O I：
10.1039/c4ra03222e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
O-Carboxymethyl chitosan-functionalized multi-walled carbon nanotubes (MWCNTs/OMCS) were found to be a novel additive for high-speed counter-current chromatography (HSCCC). It was shown that a kind of liquid-liquid/solid (LLS) three-phase HSCCC system can be established with MWCNTs/OMCS as additive, and in this HSCCC system liquid-liquid partition chromatography and liquid-solid adsorption chromatography were combined. This study revealed that MWCNTs/OMCS can obviously improve peak resolution (R-s). Three flavonol aglycons (quercetin, luteolin and kaempferol) were used as model analytes to study the mechanisms of MWCNTs/OMCS as HSCCC solvent additive to improve Rs. It was indicated that MWCNTs/OMCS improved R-s not by increasing the stationary phase retention but by introducing intermolecular forces: electrostatic interaction, hydrogen bonding interaction and pi-pi conjugation.
引用
收藏
页码：26231 / 26239
页数：9
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