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TpBD/UiO-66-NH 微介孔杂化材料作为开管毛细管电色谱固定相

TpBD/UiO-66-NH micro-mesoporous hybrid material as a stationary phase for open tubular capillary electrochromatography.

作者信息

Gao Lidi, Qu Xinran, Meng Shuang, Chen Mo, He Yuxin, Zhao Fuquan, Chu Hongtao, Qin Shili, Jin Fenglong

机构信息

College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 China

Heilongjiang Industrial Hemp Processing Technology Innovation Center, Qiqihar University Qiqihar 161006 China.

出版信息

RSC Adv. 2024 Sep 3;14(38):28148-28159. doi: 10.1039/d4ra05097e. eCollection 2024 Aug 29.

DOI:10.1039/d4ra05097e
PMID:39228753
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11369885/
Abstract

The excellent stability of covalent organic frameworks (COFs) and the diversity of metal organic frameworks (MOFs) make MOF/COF hybrid materials promising candidates for chromatographic stationary phases. In this paper, a TpBD/UiO-66-NH hybrid material was synthesized through a Schiff-base reaction between TpBD COFs and UiO-66-NH MOFs; characterized using Fourier-transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy; and bonded to a capillary to prepare a TpBD/UiO-66-NH-bonded open tubular capillary electrochromatography (OT-CEC) column. Results suggested that the hybrid material had the crystal morphology of a single COF and MOF, a micro-mesoporous structure, and good thermal stability. The inner surface of the OT-CEC column was tightly and uniformly distributed with the stationary phase (∼1.5 μm). The baseline separation of 13 amino acids and three families (4 acidic antibiotics, 4 preservatives and 6 sulfonamides) of emerging pollutant mixtures was achieved due to the synergistic effect of TpBD and UiO-66-NH in the stationary phase. The OT-CEC column showed good reproducibility and stability with relative standard deviations of migration time and resolutions in the range of 1.17-3.93% and 1.79-4.31%, respectively.

摘要

共价有机框架（COF）出色的稳定性以及金属有机框架（MOF）的多样性，使得MOF/COF杂化材料成为色谱固定相的理想候选材料。本文通过TpBD COF与UiO-66-NH MOF之间的席夫碱反应合成了一种TpBD/UiO-66-NH杂化材料；采用傅里叶变换红外光谱、X射线衍射和X射线光电子能谱对其进行了表征；并将其键合到毛细管上，制备了一种TpBD/UiO-66-NH键合开管毛细管电色谱（OT-CEC）柱。结果表明，该杂化材料具有单一COF和MOF的晶体形态、微孔-介孔结构以及良好的热稳定性。OT-CEC柱的内表面被固定相紧密且均匀地覆盖（约1.5μm）。由于固定相中TpBD和UiO-66-NH的协同作用，实现了13种氨基酸和三类新兴污染物混合物（4种酸性抗生素、4种防腐剂和6种磺胺类药物）的基线分离。该OT-CEC柱具有良好的重现性和稳定性，迁移时间和分离度的相对标准偏差分别在1.17 - 3.93%和1.79 - 4.31%范围内。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/f29e639abecb/d4ra05097e-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/a77524566552/d4ra05097e-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/967232a89245/d4ra05097e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/76d425cbd3ef/d4ra05097e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/f1d85dbd0c23/d4ra05097e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/b76be0253f06/d4ra05097e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cfa6/11369885/f29e639abecb/d4ra05097e-f10.jpg

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