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Mao Z, Chen J, Jiang D, Zhao N, Qin Y, Mao X, Fang F, Ma P. Itaconic Acid-Based Organic-Polymer Monolithic Column for Hydrophilic Capillary Electrochromatography and Its Application in Pharmaceutical Analysis. ACS OMEGA 2024; 9:1554-1561. [PMID: 38222631 PMCID: PMC10785275 DOI: 10.1021/acsomega.3c08031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/07/2023] [Accepted: 12/11/2023] [Indexed: 01/16/2024]
Abstract
Itaconic acid is an excellent hydrophilic monomer owing to the dicarboxylic group possessing strong polarity. This study reports on the preparation of a new organic-polymer monolithic column poly(itaconic acid-co-3-(acryloyloxy)-2-hydroxypropyl methacrylate) (poly(IA-co-AHM)) featuring excellent hydrophilic chromatography ability and its application in pharmaceutical analysis. The monolithic column was successfully synthesized by using the monomer itaconic acid and the cross-linker AHM through an in situ copolymerization method. Optical microscopy, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR) were employed for the characterization of the poly(IA-co-AHM) monolithic column, and all of these demonstrated that the prepared itaconic acid-based monolithic column exhibited satisfactory permeability and a homogeneous porous structure. Owing to the carboxylic groups of itaconic acid, a cathodic electroosmotic flow (EOF) was generated on the itaconic acid-based monolithic column among the pH ranges of the mobile phase from 4.0 to 9.0. Depending on the powerful hydrophilic interactions, different kinds of polar substances, including thioureas, nucleoside drugs, sulfonamides, and polypeptides, were separated efficiently by the itaconic acid-based monoliths poly(IA-co-AHM). The separations of polar compounds were successfully realized, even at a lower level of 50% acetonitrile content on this monolithic column. The highest column efficiencies corresponding to N,N'-dimethylthiourea and idoxuridine were 102 720 and 124 267 N/m, respectively. The poly(IA-co-AHM) monolithic column displayed excellent repeatability, whose relative standard deviations (RSDs) of the retention time and peak area were both lower than 5.0%. All experimental results demonstrated that the new itaconic acid-functionalized monolithic column was greatly appropriate to separate the polar compounds under the HILIC mode.
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Affiliation(s)
- Zhenkun Mao
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Jinxiu Chen
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Dandan Jiang
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Ningmin Zhao
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Yinhui Qin
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Xiangju Mao
- Zhengzhou
Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006, China
| | - Fengqin Fang
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Peizhi Ma
- Department
of Pharmacy, Henan Provincial People’s
Hospital, Zhengzhou 450003, Henan, China
- Department
of Pharmacy, People’s Hospital of
Zhengzhou University, Zhengzhou University, Zhengzhou 450003, Henan, China
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2
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Lis H, Paszkiewicz M, Godlewska K, Maculewicz J, Kowalska D, Stepnowski P, Caban M. Ionic liquid-based functionalized materials for analytical chemistry. J Chromatogr A 2022; 1681:463460. [DOI: 10.1016/j.chroma.2022.463460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
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3
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Ai C, Ke X, Tang J, Tang X, Abu-Reziq R, Chang J, Yuan J, Yu G, Pan C. One-pot construction of nitrogen-rich polymeric ionic porous networks for effective CO 2 capture and fixation. Polym Chem 2021; 13:121-129. [PMID: 35027946 PMCID: PMC8689585 DOI: 10.1039/d1py01121a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/17/2021] [Indexed: 11/21/2022]
Abstract
Facile preparation of ionic porous networks (IPNs) with large and permanent porosity is highly desirable for CO2 capture and transformation but remains a challenge. Here we report a one-pot base-mediated construction of nitrogen-rich IPNs through a combination of nucleophilic substitution and quaternisation chemistry from H-imidazole. This strategy, as proven by the model reactions of 1H-imidazole or 1-methyl-1H-imidazole with cyanuric chloride, allows for fine regulation of porosity and physicochemical properties, leading to nitrogen-rich IPNs featuring abundant ionic units and radicals. The as-prepared networks, termed IPN-CSUs, efficiently capture CO2 (80.1 cc g-1 at 273 K/1 bar) with an ideal CO2/N2 selectivity of 139.7. They can also effectively catalyse the cycloaddition reaction between CO2 and epoxides with high yields of up to 99% under mild conditions (0.1 MPa, 298 K), suggesting their possible applications in the fields of both selective molecular separation and conversion. Unlike the previously known strategies generally involving single coupling chemistry, our strategy combining two coupling routes in one pot appears to be unique and potentially applicable to other building blocks.
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Affiliation(s)
- Chenxiang Ai
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
| | - Xinquan Ke
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
| | - Juntao Tang
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
| | - Xincun Tang
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
| | - Raed Abu-Reziq
- Institute of Chemistry, Casali Center of Applied Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Jian Chang
- Department of Materials and Environmental Chemistry, Stockholm University Stockholm 10691 Sweden
| | - Jinyin Yuan
- Department of Materials and Environmental Chemistry, Stockholm University Stockholm 10691 Sweden
| | - Guipeng Yu
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
| | - Chunyue Pan
- College of Chemistry and Chemical Engineering, Central South University Changsha 410083 China
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4
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Li J, Chong YT, Teng CP, Liu J, Wang F. Microporosity mediated proliferation of preosteoblast cells on 3D printed bone scaffolds. NANO SELECT 2021. [DOI: 10.1002/nano.202000272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Jian Li
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) Singapore Singapore
| | - Yi Ting Chong
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) Singapore Singapore
| | - Choon Peng Teng
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) Singapore Singapore
| | - Jinyan Liu
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products Guangdong Institute of Medical Instruments Guangzhou Guangdong China
| | - FuKe Wang
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) Singapore Singapore
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Hu C, Mao Z, Li Z, Li Q, Chen Z. Benzoic acid-modified monolithic column for separation of hydrophilic compounds by capillary electrochromatography with high content of water in mobile phase. J Chromatogr A 2021; 1647:462166. [PMID: 33957344 DOI: 10.1016/j.chroma.2021.462166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 12/15/2022]
Abstract
Hydrophilic column combined with mobile phase containing high content of water is a green method for the separation of polar compounds, but there are few related studies, and the separation efficiency and performance of existing columns still needs to be improved. In this work, a novel monolithic column for separation of hydrophilic compounds under both high water content and HILIC condition, was prepared by in-situ polymerization using 4-vinylbenzoic acid (VBA) and 1-(Acryloyloxy)-3-(methacryloyloxy)-2-propanol (AMAP) as functional monomers. The poly(VBA-co-AMAP) monolithic column showed good separation performance towards various polar compounds under different chromatographic conditions based on the π-interaction, hydrophobic and hydrogen bonding interactions provided by 4-vinylbenzoic acid functional monomer. The highest column efficiency for adenine was over 2.15 × 105 plates m-1 (theoretical plate, N). In addition, the monolith showed good stability and reproducibility, the relative standard deviations (RSDs) of retention times within days (n = 5), between days (n = 5), between columns (n = 3) and between batches (n = 3) were 0.47-1.13%, 1.20-2.68%, 0.59-1.78% and 1.54-3.60%, respectively. This novel type of monolith has great application potential in the separation of hydrophilic compounds.
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Affiliation(s)
- Changjun Hu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Zhentao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Qiaoyan Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 100080, China.
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Zhou Y, Duan L, Huang Y, Liu Y, Wang L, Qiao X. Ionic Liquid 1-Vinyl-3-dodecylimidazole Bromide Embedded Hybrid Monolithic Column and Its Versatile Post-modification with Amino Acids. JOURNAL OF ANALYSIS AND TESTING 2021. [DOI: 10.1007/s41664-021-00171-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Mao Z, Li Z, Hu C, Liu Y, Cao Z, Chen Z. Strong hydrophilic monolithic column functionalized with amphiphilic benzyl quinine for capillary electrochromatography and application in pharmaceutical analysis. J Chromatogr A 2020; 1621:461031. [PMID: 32201038 DOI: 10.1016/j.chroma.2020.461031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 12/27/2022]
Abstract
An innovative strong hydrophilic organic polymer monolithic column of poly(N-benzylquininium chloride-co-1, 3, 5-triacryloylhexahydro-1, 3, 5-triazine) (poly(NBQ-co-TAT)) has been successfully synthesized through in situ copolymerization for capillary electrochromatography. The amphiphilic monomer NBQ and the strong polar cross-linker TAT are firstly used in hydrophilic electrochromatography by taking advantage of the exhibition of hydrophilicity at lower levels of organic solvent and ease formation of porous structure. The monolithic column poly(NBQ-co-TAT) shows powerful hydrophilic selectivity with mobile phase containing more than 60% organic solvent. The introduction of NBQ and TAT enlarges the sources of functional monomers and cross-linkers for HILIC. Due to the presence of the positively charged group in NBQ, an anodic electroosmotic flow is generated with the change of pH values from 2.0 to 12.0. The monolithic column was used for the separations of thioureas, phenols, xanthines, nucleobases, acidic substances and pharmaceuticals. The highest column efficiency for N, N'-dimethylthiourea is 1.15 × 105 N m-1. The application of the monolithic column for a real sample, cytochrome C digestion indicates its great potential in practical application.
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Affiliation(s)
- Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 10080, China
| | - Zhentao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Changjun Hu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Yikun Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zhi Cao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, and Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China; State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Beijing 10080, China.
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8
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Stiernet P, Aqil A, Zhu X, Debuigne A. Multicomponent Radziszewski Emulsion Polymerization toward Macroporous Poly(ionic liquid) Catalysts. ACS Macro Lett 2020; 9:134-139. [PMID: 35638665 DOI: 10.1021/acsmacrolett.9b00942] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Interconnected macroporous imidazolium-based monoliths are produced via the modified Radziszewski multicomponent reaction (MCR) applied to triamines under high internal phase emulsion (HIPE) conditions. This straightforward one-pot synthesis combines the efficiency and versatility of MCRs with the ease of implementation of the emulsion templating polymerization process. The characterization of the chemical structure and morphology of the resulting materials confirms the formation of the expected macroporous poly(ionic liquid)s (PILs) networks. The promising catalytic activity and recyclability of these porous PIL monoliths are illustrated for the transesterification reaction and the decarboxylation of caffeic acid. In these cases, almost complete conversion is reached while benefiting from the advantages associated with a heterogeneous catalyst.
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Affiliation(s)
- Pierre Stiernet
- Center for Education and Research on Macromolecules (CERM), Research Unit “Complex and Entangled Systems: from Atoms to Materials” (CESAM), University of Liege (ULiege), Quartier Agora, 13 Allée du Six Août, Sart-Tilman, B-4000 Liège, Belgium
| | - Abdelhafid Aqil
- Center for Education and Research on Macromolecules (CERM), Research Unit “Complex and Entangled Systems: from Atoms to Materials” (CESAM), University of Liege (ULiege), Quartier Agora, 13 Allée du Six Août, Sart-Tilman, B-4000 Liège, Belgium
| | - Xiaomin Zhu
- RWTH Aachen University, Forckenbeckstraße 50, 52056 Aachen, Germany
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), Research Unit “Complex and Entangled Systems: from Atoms to Materials” (CESAM), University of Liege (ULiege), Quartier Agora, 13 Allée du Six Août, Sart-Tilman, B-4000 Liège, Belgium
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9
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Navarro-Huerta J, Carrasco-Correa E, Torres-Lapasió J, Herrero-Martínez J, García-Alvarez-Coque M. Modelling retention and peak shape of small polar solutes analysed by nano-HPLC using methacrylate-based monolithic columns. Anal Chim Acta 2019; 1086:142-155. [DOI: 10.1016/j.aca.2019.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/23/2019] [Accepted: 08/06/2019] [Indexed: 12/15/2022]
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10
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Mansour FR, Waheed S, Paull B, Maya F. Porogens and porogen selection in the preparation of porous polymer monoliths. J Sep Sci 2019; 43:56-69. [DOI: 10.1002/jssc.201900876] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 01/10/2023]
Affiliation(s)
- Fotouh R. Mansour
- Department of Pharmaceutical Analytical ChemistryFaculty of PharmacyTanta University Tanta Egypt
- Pharmaceutical Services CenterFaculty of PharmacyTanta University Tanta Egypt
| | - Sidra Waheed
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
- ARC Centre of Excellence for Electromaterials Science (ACES) School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
| | - Brett Paull
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
- ARC Centre of Excellence for Electromaterials Science (ACES) School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
| | - Fernando Maya
- Australian Centre for Research on Separation Science (ACROSS)School of Natural Sciences, ChemistryUniversity of Tasmania Hobart Australia
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12
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Yang J, He S, Liu A, Chen J, Dong Y. Preparation of a poly(1, 6-hexylene dimethacrylate) conventional size high performance liquid chromatographic monolithic column for separation of small molecules. Microchem J 2019. [DOI: 10.1016/j.microc.2019.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Preparation, characterization, and application of a porous poly (TAIC-co-MMA-co-EDMA) monolithic column for small molecules of aromatics and Chinese herbal medicine notoginseng by HPLC. Talanta 2019; 194:649-657. [DOI: 10.1016/j.talanta.2018.09.112] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 09/20/2018] [Accepted: 09/30/2018] [Indexed: 12/12/2022]
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14
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Chen R, Zhou H, Liu M, Yan H, Qiao X. Ionic liquids-based monolithic columns: Recent advancements and their applications for high-efficiency separation and enrichment. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Mao Z, Hu C, Li Z, Chen Z. A reversed-phase/hydrophilic bifunctional interaction mixed-mode monolithic column with biphenyl and quaternary ammonium stationary phases for capillary electrochromatography. Analyst 2019; 144:4386-4394. [DOI: 10.1039/c9an00428a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel RPLC/HILIC mixed-mode monolithic column with biphenyl and quaternary ammonium stationary phases is synthesized for capillary electrochromatography.
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Affiliation(s)
- Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery
- Ministry of Education
- and Wuhan University School of Pharmaceutical Sciences
- Wuhan 430071
- China
| | - Changjun Hu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery
- Ministry of Education
- and Wuhan University School of Pharmaceutical Sciences
- Wuhan 430071
- China
| | - Zhentao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery
- Ministry of Education
- and Wuhan University School of Pharmaceutical Sciences
- Wuhan 430071
- China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery
- Ministry of Education
- and Wuhan University School of Pharmaceutical Sciences
- Wuhan 430071
- China
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16
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Mao X, Liu L, Xiao F, Ni W, Cheng X. An innovative reversed-phase monolithic column modified with 4-vinylbiphenyl and ionic liquid stationary phases for capillary electrochromatography. NEW J CHEM 2019. [DOI: 10.1039/c9nj02116g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A poly(VBP-co-EDMA-co-IL) monolithic column was used for electrochromatographic separation.
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Affiliation(s)
- Xiangju Mao
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources
- CAGS
- Zhengzhou 450006
- P. R. China
- China National Engineering Research Center for Utilization of Industrial Minerals
| | - Lu Liu
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources
- CAGS
- Zhengzhou 450006
- P. R. China
- China National Engineering Research Center for Utilization of Industrial Minerals
| | - Fang Xiao
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources
- CAGS
- Zhengzhou 450006
- P. R. China
- China National Engineering Research Center for Utilization of Industrial Minerals
| | - Wenshan Ni
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources
- CAGS
- Zhengzhou 450006
- P. R. China
- China National Engineering Research Center for Utilization of Industrial Minerals
| | - Xintao Cheng
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources
- CAGS
- Zhengzhou 450006
- P. R. China
- China National Engineering Research Center for Utilization of Industrial Minerals
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17
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Trujillo-Rodríguez MJ, Nan H, Varona M, Emaus MN, Souza ID, Anderson JL. Advances of Ionic Liquids in Analytical Chemistry. Anal Chem 2018; 91:505-531. [PMID: 30335970 DOI: 10.1021/acs.analchem.8b04710] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - He Nan
- Department of Chemistry , Iowa State University , 1605 Gilman Hall, Ames , Iowa 50011 , United States
| | - Marcelino Varona
- Department of Chemistry , Iowa State University , 1605 Gilman Hall, Ames , Iowa 50011 , United States
| | - Miranda N Emaus
- Department of Chemistry , Iowa State University , 1605 Gilman Hall, Ames , Iowa 50011 , United States
| | - Israel D Souza
- Department of Chemistry , Iowa State University , 1605 Gilman Hall, Ames , Iowa 50011 , United States
| | - Jared L Anderson
- Department of Chemistry , Iowa State University , 1605 Gilman Hall, Ames , Iowa 50011 , United States
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18
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Mao Z, Bao T, Li Z, Chen Z. Ionic liquid-copolymerized monolith incorporated with zeolitic imidazolate framework-8 as stationary phases for enhancing reversed phase selectivity in capillary electrochromatography. J Chromatogr A 2018; 1578:99-105. [PMID: 30337168 DOI: 10.1016/j.chroma.2018.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/05/2018] [Accepted: 10/09/2018] [Indexed: 12/31/2022]
Abstract
A novel ionic liquid (1-allyl-methylimidazolium chloride, AlMeIm+Cl-) polymer monolith poly(ionic liquid-co-ethylene dimethacrylate) incorporated with zeolitic imidazolate framework-8 (ZIF-8-poly(IL-co-EDMA)) was firstly synthesized as stationary phases of monolithic column for capillary electrochromatography by one-step copolymerization. Incorporation of ZIF-8 into ionic liquid polymer monolith evidently enhanced the separation selectivity for four alkylbenzenes in reversed phase capillary electrochromatography (CEC), due to the synergistic effect derived from the same imidazole ring structure of ionic liquid and organic ligands of ZIF-8. Meanwhile, electroosmotic flow (EOF) was generated by ionic liquid in a wide range of pH values from 2.0 to 12.0. The resultant monolithic columns were characterized by scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR). The results indicated that the prepared monolithic columns had good permeability and mechanism stability. The resultant monolithic columns were applied for the separation of neutral compounds, anilines and phenols. The highest column efficiency was 2.07 × 105 plates m-1 (theoretical plates, N) for toluene. Under optimal conditions, reproducibility was obtained with relative standard deviations (RSDs) of the retention time for run-to-run, day-to-day, column-to-column and batch-to-batch were in the range of 1.58 - 3.19%, 1.92 - 3.87%, 3.84 - 4.96% and 2.63 - 4.33%, respectively. Incorporation ZIF-8 into ionic liquid polymer monolith was a promising way for the application of new materials in the fabrication of novel monolithic columns.
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Affiliation(s)
- Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Tao Bao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zhentao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430071, China.
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Lin SL, Fuh MR. Preparation and characterization of vinylimidazole-based polymer monolithic stationary phases for reversed-phase and hydrophilic interaction capillary liquid chromatography. Talanta 2018; 187:73-82. [DOI: 10.1016/j.talanta.2018.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022]
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20
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Mao Z, Qin X, Chen Z. Monolithic column functionalized with quinine derivative for anion‐exchange capillary electrochromatography. Electrophoresis 2018; 39:3006-3012. [DOI: 10.1002/elps.201800253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/24/2018] [Accepted: 07/26/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Zhenkun Mao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
| | - Xiaoning Qin
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
| | - Zilin Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of EducationWuhan University School of Pharmaceutical Sciences Wuhan P. R. China
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21
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Tang W, Row KH. Hydrophobic ionic liquid modified thermoresponsive molecularly imprinted monolith for the selective recognition and separation of tanshinones. J Sep Sci 2018; 41:3372-3381. [PMID: 30007006 DOI: 10.1002/jssc.201800329] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/01/2018] [Accepted: 07/01/2018] [Indexed: 01/22/2023]
Abstract
A hydrophobic ionic liquid modified thermoresponsive molecularly imprinted monolith was synthesized using N-isopropylacrylamide as a thermoresponsive monomer and a long-chain hydrophobic ionic liquid as an auxiliary modification monomer. The ionic-liquid-modified thermoresponsive molecularly imprinted polymer was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. When the column temperature was 50°C, the synthesized monolithic column was successfully applied to the selective separation of homologue tanshinones within 7 min and eluted only by water (mobile phase) (theoretical plates more than 1.00 × 105 per meter). The negative Gibbs free energy (≤-2.37) values showed that the transfer of the tanshinones from the mobile phase to the stationary phase on this monolithic column was a thermodynamically spontaneous process. Good linearity of the five tanshinones by thermoresponsive monolith was obtained in the range of 0.100-25.0 μg/mL. The limit of detection (S/N = 3) and limit of quantitation (S/N = 10) were less than 0.0390 and 0.0630 μg/mL, respectively, with a relative standard deviation of <4.8%. In this proposed thermoresponsive chromatography method, the separation of homologue analytes can be achieved by changing the column temperature, and the use of water as the mobile phase would decrease the economic cost and organic pollution.
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Affiliation(s)
- Weiyang Tang
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, Korea
| | - Kyung Ho Row
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, Korea
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22
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Li X, Zhao J, Cui B, Li Y, Zhang D, Liu H, Bai L, Yan H, Wang Y. Preparation of hemin polymer monolithic column and its application in the separation of proteins and small molecules. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1354207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Xueying Li
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Jing Zhao
- Experimental Center of Hebei University, Baoding, China
| | - Beijiao Cui
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Yiming Li
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Doudou Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Haiyan Liu
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Ligai Bai
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Hongyuan Yan
- College of Pharmaceutical Sciences, Hebei University, Baoding, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding, China
| | - Yong Wang
- College of Basic Medical Science of Hebei University, Baoding, China
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23
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Ding X, Yang J, Dong Y. Advancements in the preparation of high-performance liquid chromatographic organic polymer monoliths for the separation of small-molecule drugs. J Pharm Anal 2018; 8:75-85. [PMID: 29736293 PMCID: PMC5934735 DOI: 10.1016/j.jpha.2018.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 01/26/2018] [Accepted: 02/01/2018] [Indexed: 11/21/2022] Open
Abstract
The various advantages of organic polymer monoliths, including relatively simple preparation processes, abundant monomer availability, and a wide application range of pH, have attracted the attention of chromatographers. Organic polymer monoliths prepared by traditional methods only have macropores and mesopores, and micropores of less than 50 nm are not commonly available. These typical monoliths are suitable for the separation of biological macromolecules such as proteins and nucleic acids, but their ability to separate small molecular compounds is poor. In recent years, researchers have successfully modified polymer monoliths to achieve uniform compact pore structures. In particular, microporous materials with pores of 50 nm or less that can provide a large enough surface area are the key to the separation of small molecules. In this review, preparation methods of polymer monoliths for high-performance liquid chromatography, including ultra-high cross-linking technology, post-surface modification, and the addition of nanomaterials, are discussed. Modified monolithic columns have been used successfully to separate small molecules with obvious improvements in column efficiency.
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Affiliation(s)
- Xiali Ding
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Jing Yang
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Yuming Dong
- Institute of Pharmaceutical Analysis, School of Pharmacy, Lanzhou University, Lanzhou, Gansu 730000, PR China.,Lanzhou Universty-Techcomp (China) Ltd. Joint Laboratory of Pharmaceutical Analysis, Lanzhou, Gansu 730000, PR China
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24
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Zhang D, Zhang Q, Bai L, Han D, Liu H, Yan H. Fabrication of an ionic-liquid-based polymer monolithic column and its application in the fractionation of proteins from complex biosamples. J Sep Sci 2018; 41:1923-1929. [PMID: 29368444 DOI: 10.1002/jssc.201701369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/09/2018] [Accepted: 01/10/2018] [Indexed: 12/28/2022]
Abstract
An ionic-liquid-based polymer monolithic column was synthesized by free radical polymerization within the confines of a stainless-steel column (50 mm × 4.6 mm id). In the processes, ionic liquid and stearyl methacrylate were used as dual monomers, ethylene glycol dimethacrylate as the cross-linking agent, and polyethylene glycol 200 and isopropanol as co-porogens. Effects of the prepolymerization solution components on the properties of the resulting monoliths were studied in detail. Scanning electron microscopy, nitrogen adsorption-desorption measurements, and mercury intrusion porosimetry were used to investigate the morphology and pore size distribution of the prepared monoliths, which showed that the homemade ionic-liquid-based monolith column possessed a relatively uniform macropore structure with a total macropore specific surface area of 44.72 m2 /g. Compared to a non-ionic-liquid-based monolith prepared under the same conditions, the ionic-liquid-based monolith exhibited excellent selectivity and high performance for separating proteins from complex biosamples, such as egg white, snailase, bovine serum albumin digest solution, human plasma, etc., indicating promising applications in the fractionation and analysis of proteins from the complex biosamples in proteomics research.
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Affiliation(s)
- Doudou Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding, P. R. China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, P. R. China
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, P. R. China
| | - Qian Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding, P. R. China
| | - Ligai Bai
- College of Pharmaceutical Sciences, Hebei University, Baoding, P. R. China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, P. R. China
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, P. R. China
| | - Dandan Han
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, P. R. China
| | - Haiyan Liu
- College of Pharmaceutical Sciences, Hebei University, Baoding, P. R. China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, P. R. China
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, P. R. China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, P. R. China
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25
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Mathieu K, Jérôme C, Debuigne A. Macroporous poly(ionic liquid)/ionic liquid gels via CO2-based emulsion-templating polymerization. Polym Chem 2018. [DOI: 10.1039/c7py01952a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A high internal phase emulsion composed of ionic liquids and CO2 serves as a template for producing unprecedented macroporous poly(ionic liquid) gels.
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Affiliation(s)
- Kevin Mathieu
- Centre for Education and Research on Macromolecules (CERM)
- CESAM Research Unit
- Department of Chemistry
- University of Liege
- 4000 Liège
| | - Christine Jérôme
- Centre for Education and Research on Macromolecules (CERM)
- CESAM Research Unit
- Department of Chemistry
- University of Liege
- 4000 Liège
| | - Antoine Debuigne
- Centre for Education and Research on Macromolecules (CERM)
- CESAM Research Unit
- Department of Chemistry
- University of Liege
- 4000 Liège
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26
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Zhang D, Lan D, Pang X, Cui B, Bai L, Liu H, Yan H. Separation of proteins from complex bio-matrix samples using a double-functionalized polymer monolithic column. Analyst 2017; 143:280-288. [PMID: 29184931 DOI: 10.1039/c7an01491k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A double-functionalized polymer monolithic column was fabricated within the confines of a stainless-steel column (50 mm × 4.6 mm i.d.) via a facile method using iron porphyrin, ionic liquid (1-allyl-3-methylimidazolium chloride) and 1,10-decanediol dimethacrylate as tri-monomers; ethylene dimethacrylate as a crosslinker; polyethylene glycol 400 and N,N-dimethylformamide as co-porogens; benzoyl peroxide and N,N-dimethyl aniline as the redox initiation system. Results obtained from scanning electron microscopy, nitrogen adsorption-desorption, and mercury intrusion porosimetry confirmed the uniform pore structure and the pore size distribution of macro-pores. The home-made monolith was further characterized by elemental analysis to investigate the elemental composition of Fe supplied by iron porphyrin, confirming the synthetic process. The resulting optimized monolithic column was used as the stationary phase in high performance liquid chromatography for separating proteins, such as mixture of standard proteins, egg white, and human plasma, exhibiting good selectivity and high performance. It is worth noting that the home-made double-functionalized polymer monolithic column shows excellent selectivity for fractionation separation of human plasma proteins, and it is a promising separation tool for complex bio-samples in proteomic research.
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Affiliation(s)
- Doudou Zhang
- College of Pharmaceutical Sciences, Hebei University, Baoding, 071002, China.
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27
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Li XY, Wang XX, Jiang XY, Xu F, Liu HY, Bai LG, Yan HY, Qiao XQ. Preparation and application of a multiwalled carbon nanotube composite monolithic column. J Appl Polym Sci 2017. [DOI: 10.1002/app.45070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- X. Y. Li
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - X. X. Wang
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - X. Y. Jiang
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - F. Xu
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - H. Y. Liu
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - L. G. Bai
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - H. Y. Yan
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
| | - X. Q. Qiao
- College of Pharmaceutical Sciences; Hebei University; Baoding 071002 China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; Baoding 071002 China
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28
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Wang H, Hu W, Zheng Q, Bian W, Lin Z. One-pot preparation of mercaptotetrazole-silica hybrid monoliths by the thiol-ene click reaction for mixed-mode capillary liquid chromatography. J Sep Sci 2017; 40:2344-2354. [DOI: 10.1002/jssc.201700220] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Haojiang Wang
- School of Basic Medical Sciences; Shanxi Medical University; Taiyuan Shanxi China
| | - Wenli Hu
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety; Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Qiong Zheng
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety; Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
| | - Wei Bian
- School of Basic Medical Sciences; Shanxi Medical University; Taiyuan Shanxi China
| | - Zian Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety; Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety; College of Chemistry; Fuzhou University; Fuzhou Fujian China
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29
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A dummy molecularly imprinted monolith for selective solid-phase microextraction of vanillin and methyl vanillin prior to their determination by HPLC. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2107-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Mao Z, Chen Z. Monolithic column modified with bifunctional ionic liquid and styrene stationary phases for capillary electrochromatography. J Chromatogr A 2017; 1480:99-105. [DOI: 10.1016/j.chroma.2016.12.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/12/2016] [Accepted: 12/12/2016] [Indexed: 12/22/2022]
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31
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Qin J, Yang C, An Y, Liu E, Bai L, Liu H. Preparation of an ionic liquid-functionalized polymer monolith and its application in the separation of Chinese herb with HPLC. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1204552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Junxiao Qin
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
| | - Chunliu Yang
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
| | - Yingying An
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
| | - Erpin Liu
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
| | - Ligai Bai
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, China
| | - Haiyan Liu
- College of Pharmaceutical Sciences, Hebei University, Baoding, Hebei, China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding, China
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32
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Calixarene ionic liquid modified silica gel: A novel stationary phase for mixed-mode chromatography. Talanta 2016; 152:392-400. [DOI: 10.1016/j.talanta.2016.02.038] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 11/22/2022]
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