PMID- 38176250 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240126 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 270 DP - 2024 Apr 1 TI - Rapid and in-situ preparation COFs coated capillary by adsorption method for the separation and determination of phthalate ester using CEC. PG - 125617 LID - S0039-9140(23)01368-1 [pii] LID - 10.1016/j.talanta.2023.125617 [doi] AB - As a novel class of stationary phase materials, covalent organic frameworks (COFs) have shown great promise in open-tubular capillary electrochromatography. However, the current preparation of COFs coating capillaries heavily relies on tedious and time-consuming covalent bond methods. In this work, a novel, simple and rapid adsorption method was developed for fabrication of TPB-DMTP COF (fabricated from 1,3,5-tris(4-aminophenyl)benzene (TPB) and 2,5-dimethoxyterephthalaldehyde (DMTP)) coated capillary. Due to the crystallization process of the COF is greatly shortened because pre-modification capillary does not require silane coupling agent, this method enables the rapid preparation of COFs-coated capillaries. The organic molecular building units only need 25 min to form a stable COFs coating on the inner wall of a capillary by this method. To our knowledge, this is the shortest method for preparing COFs coated capillary up to now. The performance of the TPB-DMTP COF coated capillary was evaluated by using phthalate esters as model analytes. The results demonstrated that the TPB-DMTP COF coated capillary has excellent repeatability and stability. The relative standard deviations (RSDs) of the analyte's retention time of intra-day, inter-day and column-to-column were in the range of 0.05 %-0.27 %, 0.31 %-0.63 % and 0.31 %-0.88 %, respectively. And, no significant changes were observed in separation efficiency and retention time after over 200 runs. Finally, the TPB-DMTP COF coated capillary was applied for the determination of phthalates in marketed plastic bag and the recovery ranged from 88.0 % to 114.0 %. CI - Copyright (c) 2024 Elsevier B.V. All rights reserved. FAU - Wang, Guoxiu AU - Wang G AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China; Beijing Products Quality Supervision and Inspection Institute, Beijing 101300, China. Electronic address: wangguoxiu2023@163.com. FAU - Chen, Yonglei AU - Chen Y AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China. Electronic address: chyl@lzu.edu.cn. FAU - Lv, Wenjuan AU - Lv W AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China. Electronic address: lvwenj@lzu.edu.cn. FAU - Jia, Zhe AU - Jia Z AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China. Electronic address: 12337063@zju.edu.cn. FAU - Chen, Hongli AU - Chen H AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China. Electronic address: hlchen@lzu.edu.cn. FAU - Chen, Xingguo AU - Chen X AD - State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China. Electronic address: chenxg@lzu.edu.cn. LA - eng PT - Journal Article DEP - 20231230 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R SB - IM OTO - NOTNLM OT - Open-tubular capillary electrochromatography covalent organic frameworks adsorption method in situ preparation COIS- Declaration of Competing interest The authors declare that they have no conflict of interest or personal relationships that could have appeared to influence the work reported here. EDAT- 2024/01/05 00:42 MHDA- 2024/01/05 00:43 CRDT- 2024/01/04 18:10 PHST- 2023/11/01 00:00 [received] PHST- 2023/12/28 00:00 [revised] PHST- 2023/12/29 00:00 [accepted] PHST- 2024/01/05 00:43 [medline] PHST- 2024/01/05 00:42 [pubmed] PHST- 2024/01/04 18:10 [entrez] AID - S0039-9140(23)01368-1 [pii] AID - 10.1016/j.talanta.2023.125617 [doi] PST - ppublish SO - Talanta. 2024 Apr 1;270:125617. doi: 10.1016/j.talanta.2023.125617. Epub 2023 Dec 30.