Monolithic column incorporated with lanthanide metal-organic framework for capillary electrochromatography
Monolithic column incorporated with lanthanide metal-organic framework for capillary electrochromatography
复制标题
用于毛细管电色谱的采用镧系金属有机骨架的整体柱
DOI：
10.1016/j.chroma.2016.07.015
复制
发表时间：
2016
影响因子：
4.1
通讯作者：
Liu Zhao-Sheng
中科院分区：
文献类型：
--
作者：
Zhang Li-Shun;Du Pei-Yao;Gu Wen;Zhao Qing-Li;Huang Yan-Ping;Liu Zhao-Sheng
将新型稀土金属有机骨架NKU-1成功地包埋在聚(BMA-co-EDMA)整体柱中，并用毛细管电色谱(CEC)对其进行了表征。通过Eu(III)离子自组装合成了稀土金属有机骨架[Eu2(ABTC)1.5(H2O)3(DMA)](NKU-1)，并制备了3，3‘，5，5’-偶氮苯四元酸配体聚(BMA-co-EDMA)单体。开发了1-丁基-3-甲基咪唑四氟硼酸盐和N，N-二甲基甲酰胺作为二元致孔剂，使NKU-1具有均匀的分散性和整体柱的高渗透性。用红外光谱、扫描电子显微镜、X射线衍射仪、能谱仪和透射电子显微镜对NKU-1成功地引入到聚(BMA-co-EDMA)中进行了表征。NKU-1-聚(BMA-co-EDMA)整体柱分离了烷基苯、多环芳烃、苯系物和萘基取代物四类分析物。与裸整体柱(柱效率为10万孔板/米)相比，NKU-1-聚(BMA-co-EDMA)整体柱显示出更高的柱效率(最大为21万孔板/米)和更高的渗透率，以及更少的峰拖尾。结果表明，NKU-1-聚(BMA-co-EDMA)整体柱是一种很有前途的CEC固定相。
A new lanthanide metal-organic frameworks NKU-1 have successfully incorporated into poly (BMA-co-EDMA) monolith and evaluated by capillary electrochromatography (CEC). Lanthanide metal-organic frameworks [Eu2(ABTC)1.5(H2O)3(DMA)] (NKU-1) were synthesized by self-assembly of Eu(III) ions and 3,3′,5,5′-azo benzene tetracarboxylic acid ligands have been fabricated into poly(BMA-co-EDMA) monoliths. 1-Butyl-3-methylimidazolium tetrafluoroborate andN,N-dimethylformamide were developed as binary porogen obtaining homogeneous dispersibility for NKU-1 and high permeability for monolithic column. The successful incorporation of NKU-1 into poly(BMA-co-EDMA) was confirmed and characterized by FT-IR spectra, scanning electron microscopy, X-ray diffraction, energy dispersive spectrometer area scanning, and transmission electron microscopy. Separation ability of the NKU-1-poly (BMA-co-EDMA) monoliths was demonstrated by separating four groups of analytes in CEC, including alkylbenzenes, polycyclic aromatic hydrocarbon, aniline series and naphthyl substitutes. Compared with bare monolithic (column efficiency of 100,000 plates/m), the NKU-1-poly (BMA-co-EDMA) monoliths have displayed greater column efficiency (maximum 210,000 plates/m) and higher permeability, as well as less peak tailing. The results showed that the NKU-1-poly (BMA-co-EDMA) monoliths are promising stationary phases for CEC separations.