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Wang J, Qiao JQ, Zheng WJ, Lian HZ. Effect of ionic liquids as mobile phase additives on retention behaviors of G-quadruplexes in reversed-phase high performance liquid chromatography. J Chromatogr A 2024; 1715:464604. [PMID: 38176351 DOI: 10.1016/j.chroma.2023.464604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/06/2024]
Abstract
G-quadruplexes (G4s) play an important role in a variety of biological processes and have extensive application prospects. Due to the significance of G4s in physiology and biosensing, studies on G4s have attracted much attention, stimulating the development or improvement of methods for G4 structures and polymorphism analysis. In this work, ionic liquids (ILs) were involved as mobile phase additives in reversed-phase high performance liquid chromatography (RP-HPLC) to analyse G4s with various conformations for the first time. How ILs affected the retention behaviors of G4s was investigated comprehensively. It was found that the addition of ILs markedly enhanced G4 retention, along with obvious amelioration on chromatographic peak shapes and separation. The influence of pH of mobile phase and types of ILs were also included in order to acquire an in-depth understanding. It appeared that the effect of ILs on G4 retention behaviors was the result of a combination of various interactions between G4s with the hydrophobic stationary phase and with the IL-containing mobile phase, where ion pair mechanism and enhanced hydrophobic interaction dominated. The findings of this work revealed that ILs could effectively improve the separation of G4s in RP-HPLC, which was conducive to G4 structural analysis, especially for G4s polymorphism elucidation.
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Affiliation(s)
- Ju Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Jun-Qin Qiao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
| | - Wei-Juan Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, China.
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2
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Han C, Wang Q, Yao Y, Zhang Q, Huang J, Zhang H, Qu L. Thin layer chromatography coupled with surface enhanced Raman scattering for rapid separation and on-site detection of multi-components. J Chromatogr A 2023; 1706:464217. [PMID: 37517317 DOI: 10.1016/j.chroma.2023.464217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 08/01/2023]
Abstract
The separation and detection of multi-component mixtures has always been a challenging task. Traditional detection methods often suffer from complex operation, high cost, and low sensitivity. Surface enhanced Raman scattering (SERS) technique is a high sensitivity, powerful and rapid detection tool, which can realize the specific detection of single substance components, but it must solve the problem that multi-component mixtures cannot be accurately determined. Thin layer chromatography (TLC) technology, as a high-throughput separation technology, uses chromatographic plate as the stationary phase, and could select different developing phases for separation experiments. The advantages of TLC technology in short distance and rapid separation are widely used in protein, dye and biomedical fields. However, TLC technology has limitations in detection ability and difficulty in obtaining ideal signal intensity. The combination of TLC technology and SERS technology made the operation procedure simple and the sample size small, which can achieve rapid on-site separation and quantitative detection of mixtures. Due to the rapid development of TLC-SERS technology, it has been widely used in the investigation of various complex systems. This paper reviews the application of TLC-SERS technology in food science, environmental pollution and biomedicine.
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Affiliation(s)
- Caiqin Han
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
| | - Qin Wang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Yue Yao
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Qian Zhang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Jiawei Huang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Hengchang Zhang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Lulu Qu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China.
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3
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An DY, Pu WR, Wang Y, Xue-Zhang, Huang YP, Liu ZS. Improving sorption performance of a molecularly imprinted monolithic column by doping mesoporous molecular sieve SBA-15. Mikrochim Acta 2022; 189:85. [PMID: 35129695 DOI: 10.1007/s00604-022-05192-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/13/2022] [Indexed: 01/07/2023]
Abstract
For the first time a hybrid molecularly imprinted polymer (MIP) doped with 3-(trimethoxysilyl) propyl methacrylate (γ-MPS)-modified mesoporous molecular sieve SBA-15 for target peptide recognition has been developed. Zinc acrylate and methacrylic acid were used as binary functional monomers, and ethylene dimethacrylate was used as cross-linking agent to prepare an imprinted monolith against Val-Tyr-Ala-Leu-Lys(glutarylation) (VYALKglu). The morphology of the polymers was characterized by scanning electron microscopy, FT-IR spectroscopy, energy dispersive spectroscopy, and 1H NMR. The SBA-15-MPS MIP showed high recovery of 87.1% and the IF of 12.9 for the enrichment of the template peptide. When the template peptide concentration ranged from 5 to 90 μg mL-1, the correlation coefficients (R2) for the calibration function obtained was better 0.999. The limit of detection (LOD, 0.30 μg mL-1) and limit of quantification (LOQ, 1.0 μg mL-1) were achieved for signal-to-noise ratios of 3:1 and 10:1, respectively. When other kinds of synthetic peptides were used as analogs, the selectivity of the SBA-15-MPS MIP was much better than the SBA-15-MPS NIP (without template peptides) with relative selectivity coefficients of 52.8-265. In contrast, little quinolones and biogenic amines are adsorbed with the SBA-15-MPS MIP. The SBA-15-MPS MIP could enrich VYALKglu from spiked histone digestion with the average recovery of 87.8% and the relative standard deviation (RSD) of 0.99%. As a conclusion, doping of SBA-15 is an effective approach to the improvement of performance of molecularly imprinted monolith.
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Affiliation(s)
- Dong-Yu An
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Wan-Rong Pu
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Yang Wang
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Xue-Zhang
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Yan-Ping Huang
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China.
| | - Zhao-Sheng Liu
- Tianjin Key Laboratory On Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China.
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4
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Characterization and applications of a trioctyl(3/4-vinylbenzyl)phosphonium stationary phase for use in capillary liquid chromatography. J Chromatogr A 2022; 1666:462866. [DOI: 10.1016/j.chroma.2022.462866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 11/21/2022]
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Neequaye T, El Rassi Z. Poly(carboxyethyl acrylate-co-ethylene glycol dimethacrylate) precursor monolith with bonded octadecyl ligands for use in reversed-phase capillary electrochromatography. Electrophoresis 2021; 42:2656-2663. [PMID: 34324209 DOI: 10.1002/elps.202100117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/05/2021] [Accepted: 07/24/2021] [Indexed: 11/06/2022]
Abstract
A carboxy precursor monolithic column, namely poly(carboxy ethyl acrylate-co-ethylene glycol dimethacrylate) was first produced in a 100 μm i.d. fused-silica capillary and subsequently surface bonded with n-octadecyl (C18 ) ligands by a post-polymerization functionalization process with octadecylamine in the presence of N,N´-dicyclohexylcarbodiimide. The bonding of octadecyl ligands was achieved via an amide linkage between the carboxy functions of the precursor monolith and the amino group of the octadecylamine compound. The resulting C18 monolith exhibited a very low electroosmotic flow (EOF), a fact that required the incorporation of small amounts of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) in the polymerization solution to produce a precursor monolith with fixed negative charges of sulfonate groups. This may indicate that the conjugation of the carboxy functions with octadecylamine occurred to a large extent so that the amount of residual carboxy functions was sparsely dispersed and not enough to produce a desirable EOF. The EOF velocity of the C18 column having fixed negative charges provided by the incorporated AMPS increased with increasing ACN content of the mobile phase signaling an increased binding of mobile phase ions to the polar amide linkages near the monolithic surface, and a decreased viscosity of the mobile phase, both of which would result in increased EOF velocity. The C18 monolithic column constituted a novel nonpolar sorbent for reversed-phase capillary electrochromatography for nonpolar solutes, e.g., alkylbenzenes, alkylphenyl ketones, and polyaromatic hydrocarbons, and slightly polar compounds including phenol and chlorophenols. The C18 monolithic column exhibited relatively high selectivity toward chlorophenols differing by one chloro substituent.
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Affiliation(s)
- Theophilus Neequaye
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Ziad El Rassi
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma, USA
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6
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Mompó-Roselló O, Ribera-Castelló A, Simó-Alfonso EF, Ruiz-Angel MJ, García-Alvarez-Coque MC, Herrero-Martínez JM. Extraction of β-blockers from urine with a polymeric monolith modified with 1-allyl-3-methylimidazolium chloride in spin column format. Talanta 2020; 214:120860. [PMID: 32278420 DOI: 10.1016/j.talanta.2020.120860] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 12/13/2022]
Abstract
A glycidyl methacrylate-based monolith was modified with imidazolium-based ionic liquid (IL) to be used as stationary phase for solid-phase extraction (SPE). The host monolithic support was prepared by in-situ UV polymerization in spin column format. Two approaches were developed to incorporate the IL into the polymeric monolithic matrix: generation of IL onto the surface monolith, and copolymerization by addition of the IL to the polymerization mixture, which gave the best results. The resulting sorbent materials were morphologically characterized and used for the isolation of five β-blockers from human urine samples. All SPE steps were accomplished by centrifugation, which reduces significantly costs and time in sample treatment. Under optimal conditions, β-blockers were quantitatively retained in the modified monolith at pH 12, and desorbed with a water-methanol mixture, to be subsequently determined via HPLC with UV detection. The limits of detection ranged between 1.4 and 40 μg L-1, and the reproducibility among extraction units (expressed as relative standard deviation) was below 8.2%. The novel phase was successfully applied to the extraction of propranolol in urine samples with recoveries above 90%.
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Affiliation(s)
- Oscar Mompó-Roselló
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Ana Ribera-Castelló
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Ernesto F Simó-Alfonso
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - María José Ruiz-Angel
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - María Celia García-Alvarez-Coque
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - José Manuel Herrero-Martínez
- Department of Analytical Chemistry, Faculty of Chemistry, University of Valencia, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain.
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7
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A monolithic capillary modified with a copoplymer prepared from the ionic liquid 1-vinyl-3-octylimidazolium bromide and styrene for electrochromatography of alkylbenzenes, polycyclic aromatic hydrocarbons, proteins and amino acids. Mikrochim Acta 2019; 187:67. [DOI: 10.1007/s00604-019-3894-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 10/06/2019] [Indexed: 02/08/2023]
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8
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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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9
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Wu J, Xu F, Li S, Ma P, Zhang X, Liu Q, Fu R, Wu D. Porous Polymers as Multifunctional Material Platforms toward Task-Specific Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1802922. [PMID: 30345562 DOI: 10.1002/adma.201802922] [Citation(s) in RCA: 187] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/15/2018] [Indexed: 05/08/2023]
Abstract
Exploring advanced porous materials is of critical importance in the development of science and technology. Porous polymers, being famous for their all-organic components, tailored pore structures, and adjustable chemical components, have attracted an increasing level of research interest in a large number of applications, including gas adsorption/storage, separation, catalysis, environmental remediation, energy, optoelectronics, and health. Recent years have witnessed tremendous research breakthroughs in these fields thanks to the unique pore structures and versatile skeletons of porous polymers. Here, recent milestones in the diverse applications of porous polymers are presented, with an emphasis on the structural requirements or parameters that dominate their properties and functionalities. The Review covers the following applications: i) gas adsorption, ii) water treatment, iii) separation, iv) heterogeneous catalysis, v) electrochemical energy storage, vi) precursors for porous carbons, and vii) other applications (e.g., intelligent temperature control textiles, sensing, proton conduction, biomedicine, optoelectronics, and actuators). The key requirements for each application are discussed and an in-depth understanding of the structure-property relationships of these advanced materials is provided. Finally, a perspective on the future research directions and challenges in this field is presented for further studies.
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Affiliation(s)
- Jinlun Wu
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Fei Xu
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Shimei Li
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Pengwei Ma
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Xingcai Zhang
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Qianhui Liu
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Ruowen Fu
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Dingcai Wu
- Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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10
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Javed F, Ullah F, Zakaria MR, Akil HM. An approach to classification and hi-tech applications of room-temperature ionic liquids (RTILs): A review. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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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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12
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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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13
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Di H, Zhu X. Use of Ionic liquids as additives in ion exchange chromatography for the analysis of cations. J Sep Sci 2017; 40:4113-4119. [DOI: 10.1002/jssc.201700408] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 07/18/2017] [Accepted: 08/13/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Huawei Di
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou P.R. China
| | - Xiashi Zhu
- College of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou P.R. China
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14
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Liu YQ, Yu H. Indirect ultraviolet detection of alkaline earth metal ions using an imidazolium ionic liquid as an ultraviolet absorption reagent in ion chromatography. J Sep Sci 2017; 40:1660-1666. [DOI: 10.1002/jssc.201601297] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/18/2017] [Accepted: 02/02/2017] [Indexed: 01/13/2023]
Affiliation(s)
- Yong-qiang Liu
- College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin China
| | - Hong Yu
- College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin China
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15
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Rathnasekara R, Khadka S, Jonnada M, El Rassi Z. Polar and nonpolar organic polymer-based monolithic columns for capillary electrochromatography and high-performance liquid chromatography. Electrophoresis 2016; 38:60-79. [DOI: 10.1002/elps.201600356] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/04/2016] [Accepted: 09/13/2016] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Murthy Jonnada
- Department of Chemistry; Oklahoma State University; Stillwater OK USA
| | - Ziad El Rassi
- Department of Chemistry; Oklahoma State University; Stillwater OK USA
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16
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Wouters S, Hauffman T, Mittelmeijer-Hazeleger MC, Rothenberg G, Desmet G, Baron GV, Eeltink S. Comprehensive study of the macropore and mesopore size distributions in polymer monoliths using complementary physical characterization techniques and liquid chromatography. J Sep Sci 2016; 39:4492-4501. [DOI: 10.1002/jssc.201600896] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/27/2016] [Accepted: 09/27/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Sam Wouters
- Vrije Universiteit Brussel; Department of Chemical Engineering; Brussels Belgium
| | - Tom Hauffman
- Vrije Universiteit Brussel, Department of Materials and Chemistry; Research group of Electrochemical and Surface Engineering; Brussels Belgium
| | | | - Gadi Rothenberg
- University of Amsterdam; Van ‘t Hoff Institute for Molecular Sciences; Amsterdam The Netherlands
| | - Gert Desmet
- Vrije Universiteit Brussel; Department of Chemical Engineering; Brussels Belgium
| | - Gino V. Baron
- Vrije Universiteit Brussel; Department of Chemical Engineering; Brussels Belgium
| | - Sebastiaan Eeltink
- Vrije Universiteit Brussel; Department of Chemical Engineering; Brussels Belgium
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17
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Liu YQ, Yu H. Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent. J Sep Sci 2016; 39:3156-62. [DOI: 10.1002/jssc.201600585] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Yong-qiang Liu
- College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin China
| | - Hong Yu
- College of Chemistry and Chemical Engineering; Harbin Normal University; Harbin China
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18
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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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19
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Fabrication of an ionic liquid-based macroporous polymer monolithic column via atom transfer radical polymerization for the separation of small molecules. Talanta 2016; 149:62-68. [DOI: 10.1016/j.talanta.2015.11.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 11/04/2015] [Accepted: 11/11/2015] [Indexed: 01/06/2023]
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Urban J. Current trends in the development of porous polymer monoliths for the separation of small molecules. J Sep Sci 2015; 39:51-68. [DOI: 10.1002/jssc.201501011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 09/17/2015] [Accepted: 09/18/2015] [Indexed: 01/15/2023]
Affiliation(s)
- Jiří Urban
- Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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Recent development of ionic liquid stationary phases for liquid chromatography. J Chromatogr A 2015; 1420:1-15. [PMID: 26463427 DOI: 10.1016/j.chroma.2015.09.090] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/28/2015] [Accepted: 09/29/2015] [Indexed: 12/28/2022]
Abstract
Based on their particular physicochemical characteristics, ionic liquids have been widely applied in many fields of analytical chemistry. Many types of ionic liquids were immobilized on a support like silica or monolith as stationary phases for liquid chromatography. Moreover, different approaches were developed to bond covalently ionic liquids onto the supporting materials. The obtained ionic liquid stationary phases show multi-mode mechanism including hydrophobic, hydrophilic, hydrogen bond, anion exchange, π-π, and dipole-dipole interactions. Therefore, they could be used in different chromatographic modes including ion-exchange, RPLC, NPLC and HILIC to separate various classes of compounds. This review mainly summarizes the immobilized patterns and types of ionic liquid stationary phases, their retention mechanisms and applications in the recent five years.
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Alves F, Nischang I. Radical-mediated step-growth: Preparation of hybrid polymer monolithic columns with fine control of nanostructural and chromatographic characteristics. J Chromatogr A 2015; 1412:112-25. [DOI: 10.1016/j.chroma.2015.08.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 08/05/2015] [Accepted: 08/10/2015] [Indexed: 12/26/2022]
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