PMID- 37523908 OWN - NLM STAT- MEDLINE DCOM- 20230823 LR - 20230823 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1706 DP - 2023 Sep 13 TI - Three-dimensional fluorinated covalent organic frameworks coated capillary for the separation of fluoroquinolones by capillary electrochromatography. PG - 464234 LID - S0021-9673(23)00459-4 [pii] LID - 10.1016/j.chroma.2023.464234 [doi] AB - In this work, a three-dimensional fluorinated covalent organic frameworks (3D FCOFs) JUC-515 was synthesized from tetra(4-aminophenyl)methane (TAM) and 2,3,5,6-tetrafluoroterephthalol (TFA) by an ionic liquid method. JUC-515 was introduced into the capillary column and bonded to the inner wall of the capillary column by chemical bonding. Through a variety of characterization results, JUC-515 was successfully synthesized and introduced into the capillary column. The effects of buffer solution concentration, organic additive content and pH of the buffer solution on the separation of fluoroquinolones (FQs) were investigated in detail. The JUC-515-coated capillary column showed good resolution (>1.5) and reproducibility. The relative standard deviations (RSDs) of the retention time for intraday, interday, column-to-column and interbatch precision were less than 0.88%, 2.45%, 2.74% and 3.32%, respectively. The RSDs of the peak area for intraday, interday, column-to-column and interbatch precision were less than 3.79%, 4.31%, 3.33% and 5.62%, respectively. The JUC-515-coated capillary column could be used no less than 150 times. The results showed that the JUC-515-coated capillary column had good separation performance. In addition, by separating fluorinated beta-phenylalanine analogs, beta-phenylalanine and trifluoromethyl beta-phenylalanine analogs, the separation mechanism based on fluorine interactions was discussed. In conclusion, JUC-515 had good potential as a stationary phase for capillary electrochromatography. CI - Copyright (c) 2023. Published by Elsevier B.V. FAU - Yin, Han AU - Yin H AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. FAU - Zhen, Ziyi AU - Zhen Z AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. FAU - Ning, Weijie AU - Ning W AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. FAU - Zhang, Lu AU - Zhang L AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. FAU - Xiang, Yuhong AU - Xiang Y AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. Electronic address: xiangyh@cnu.edu.cn. FAU - Ye, Nengsheng AU - Ye N AD - Department of Chemistry, Capital Normal University, Beijing, 100048, PR China. Electronic address: yensh@cnu.edu.cn. LA - eng PT - Journal Article DEP - 20230722 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Metal-Organic Frameworks) RN - 0 (Fluoroquinolones) RN - 47E5O17Y3R (Phenylalanine) SB - IM MH - *Metal-Organic Frameworks/chemistry MH - *Capillary Electrochromatography/methods MH - Fluoroquinolones MH - Reproducibility of Results MH - Phenylalanine OTO - NOTNLM OT - Fluorine interactions OT - Fluoroquinolones OT - Open-tubular capillary electrochromatography OT - Three-dimensional fluorinated covalent organic frameworks COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/08/01 01:08 MHDA- 2023/08/23 06:42 CRDT- 2023/07/31 18:05 PHST- 2023/05/24 00:00 [received] PHST- 2023/07/18 00:00 [revised] PHST- 2023/07/20 00:00 [accepted] PHST- 2023/08/23 06:42 [medline] PHST- 2023/08/01 01:08 [pubmed] PHST- 2023/07/31 18:05 [entrez] AID - S0021-9673(23)00459-4 [pii] AID - 10.1016/j.chroma.2023.464234 [doi] PST - ppublish SO - J Chromatogr A. 2023 Sep 13;1706:464234. doi: 10.1016/j.chroma.2023.464234. Epub 2023 Jul 22.