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题名: Separation of small organic molecules using covalent organic frameworks-LZU1 as stationary phase by open-tubular capillary electrochromatography
作者: Niu, XY; Ding, SY(丁三元); Wang, WF; Xu, YL; Xu, YY; Chen, HL; Chen, XG(陈兴国)
收录类别: SCIE ; EI ; MEDLINE ; BIOSIS
出版日期: 2016-03-04
刊名: JOURNAL OF CHROMATOGRAPHY A
卷号: 1436, 页码:109-117
英文摘要: Covalent organic frameworks (COFs) have attracted much attention because of their permanent nanoscale porosity and higher surface area compared to zeolites as well as robustness. COFs have great potential in several fields such as hydrogen storage, gas separation, and catalysis. However, COFs have not yet been applied in capillary electro chromatography. Herein, covalent organic frameworks-LZU1 (COF-LZU1) was used as the stationary phase in open-tubular capillary electrochromatography for the first time. Compared to the monoliths used in electrochromatography, the preparation technique of a COF-LZU1-coated capillary was simple and practical. The baseline separation of model analytes including alkylbenzenes, polyaromatic hydrocarbons, and anilines by the COF-LZU1-coated capillary was achieved based on the size selectivity of COF-LZU1 porous structure and hydrophobic interactions between the model analytes and organic ligands of COF-LZU1. The load capacity of the COF-LZU1-coated capillary for naphthalene was 0.6 mg/mL. For three consecutive runs, the intraday relative standard deviations (RSDs) were 1.4-2.6% for the migration time and 2.7-8.7% for the peak area. The interday RSDs were 1.3-3.9% for the migration time and 3.7-9.7% for the peak area. The column-to-column reproducibility of migration time was in the range 1.0-3.9%. Moreover, the coated capillary was used for >300 runs with no changes in the separation efficiency. Thus, COFs have great potential in capillary electrochromatography and may provide a new method for chromatographic separation. (C) 2016 Elsevier B.V. All rights reserved.
关键词: Open-tubular capillary electrochromatography ; COF-LZU1 ; Small organic molecules
作者部门: [Niu, Xiaoying ; Wang, Weifeng ; Xu, Yali ; Xu, Yinyin ; Chen, Hongli ; Chen, Xingguo] Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Gansu, Peoples R China ; [Ding, Sanyuan ; Chen, Xingguo] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R China
通讯作者: Chen, XG (reprint author), Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Gansu, Peoples R China. ; Chen, XG (reprint author), Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Biochemistry & Molecular Biology; Chemistry
文章类型: Article
所属项目编号: Natural Science Foundation of China [21375053] ; Fundamental Research Funds for the Central Universities [lzujbky-2015-132]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金
项目资助者: NSFC ; LZU
语种: 英语
DOI: 10.1016/j.chroma.2016.01.066
ISSN号: 0021-9673
WOS记录号: WOS:000371654700014
EI记录号: 20160601897378
PM记录号: 26858115
BIOSIS记录号: BCI:BCI201600292604
IR记录号: WOS:000371654700014
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/180374
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Niu, XY,Ding, SY,Wang, WF,et al. Separation of small organic molecules using covalent organic frameworks-LZU1 as stationary phase by open-tubular capillary electrochromatography[J]. JOURNAL OF CHROMATOGRAPHY A,2016,1436:109-117.
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