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Xie M, Quan K, Li H, Liu B, Chen J, Yu Y, Wang J, Qiu H. Non-porous silica support covalent organic frameworks as stationary phases for liquid chromatography. Chem Commun (Camb) 2023; 59:314-317. [PMID: 36508301 DOI: 10.1039/d2cc05650j] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new strategy using non-porous silica (NPS) spheres as the support and covalent organic frameworks (COFs) as the porous functional shell for liquid chromatography was developed to ensure the independent effect of the COFs on the separation. As a proof of concept, NPS@TPB-DMTP was prepared for liquid chromatographic analysis using 1,3,5-tris(4-aminophenyl)benzene (TPB) and 2,5-dimethoxy-1,4-benzenedicarboxaldehyde (DMTP) as monomers by in situ polymerisation on the surface of NPS. It is a new way of developing COF-based stationary phases, which will be helpful in understanding what effect the COFs will have on separation.
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Affiliation(s)
- Meichao Xie
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Shenyang 110819, China. .,CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Kaijun Quan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Hui Li
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Bei Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Yongliang Yu
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Shenyang 110819, China.
| | - Jianhua Wang
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Shenyang 110819, China.
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China. .,College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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2
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Nguyen TT, Huynh TTT, Nguyen NH, Nguyen TH, Tran PH. Recent advances in the application of ionic liquid-modified silica gel in solid-phase extraction. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Yang Y, Wang J, Liu R, Quan K, Chen J, Liu X, Qiu H. Grafting of Tetraphenylethylene on Silica Surface, Characterizations, and Their Chromatographic Performance as Reversed-Phase Stationary Phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14400-14408. [PMID: 36350796 DOI: 10.1021/acs.langmuir.2c02709] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Surface modification is an effective way to functionalize the materials so as to get some special properties. Tetraphenylethylene (TPE) has been widely investigated as a well-known reagent which has the nature of aggregation-induced emission (AIE), but has never been reported in the liquid chromatography stationary phase. In this work, TPE-grafted silica (Sil-TPE) was obtained successfully using the derivative of 1-(4-hydroxyphenyl)-1,2,2-triphenylethylene as a ligand, and then characterized by elemental analysis, Fourier transform infrared spectra, thermogravimetric analysis, and so forth. Laser scanning confocal microscopy images reflected the AIE phenomenon of grafted TPE because the internal vibration and rotation of TPE molecules were restrained in the confined silica space. The contact angle test showed superhydrophobic properties of Sil-TPE. In order to understand thoroughly the mechanism of chromatographic performance and retention behavior for Sil-TPE, Tanaka test mixture, alkylbenzenes, polycyclic aromatic hydrocarbons (PAHs), and phenols were separated. This reveals that Sil-TPE has strong aromaticity and certain shape selectivity, especially, has excellent separation performance for PAHs and phenols. The thermodynamic properties and repeatability of Sil-TPE were further studied, which showed the stability of Sil-TPE. This work shows that TPE can be successfully grafted on silica surface and it has the potential to be a new kind of promising stationary phases in the future.
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Affiliation(s)
- Yali Yang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou730070, China
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
| | - Juanjuan Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
| | - Ruirui Liu
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province; Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining810008, China
| | - Kaijun Quan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
| | - Jia Chen
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou730070, China
| | - Hongdeng Qiu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
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5
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Zhang Y, Li Q, Zhong H, Zhou S, Zhao Y, Zhang M, Han H, Qiu H. Tuning selectivity via electronic interaction: Preparation and systematic evaluation of serial polar-embedded aryl stationary phases bearing large polycyclic aromatic hydrocarbons. Anal Chim Acta 2018; 1036:162-171. [DOI: 10.1016/j.aca.2018.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/29/2018] [Accepted: 09/01/2018] [Indexed: 11/26/2022]
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6
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Mallik AK, Qiu H, Takafuji M, Ihara H. High molecular-shape-selective stationary phases for reversed-phase liquid chromatography: A review. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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7
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Bai Q, Liu Y, Wang Y, Zhao K, Yang F, Liu J, Shen J, Zhao Q. Protein separation using a novel silica-based RPLC/IEC mixed-mode stationary phase modified with N-methylimidazolium ionic liquid. Talanta 2018; 185:89-97. [DOI: 10.1016/j.talanta.2018.03.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/07/2018] [Accepted: 03/14/2018] [Indexed: 01/04/2023]
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8
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Zhong R, Lindhorst AC, Groche FJ, Kühn FE. Immobilization of N-Heterocyclic Carbene Compounds: A Synthetic Perspective. Chem Rev 2017; 117:1970-2058. [DOI: 10.1021/acs.chemrev.6b00631] [Citation(s) in RCA: 181] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Rui Zhong
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Anja C. Lindhorst
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Florian J. Groche
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
| | - Fritz E. Kühn
- Molecular Catalysis, Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching bei München, Germany
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9
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Recent advances in materials for stationary phases of mixed-mode high-performance liquid chromatography. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.04.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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10
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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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11
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Zhang M, Mallik AK, Takafuji M, Ihara H, Qiu H. Versatile ligands for high-performance liquid chromatography: An overview of ionic liquid-functionalized stationary phases. Anal Chim Acta 2015; 887:1-16. [DOI: 10.1016/j.aca.2015.04.022] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 01/26/2023]
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12
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Protein separation using a novel silica-based RPLC/IEC stationary phase modified with N-methylimidazolium ionic liquid. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Liu X, Yang Q, Bao Z, Su B, Zhang Z, Ren Q, Yang Y, Xing H. Nonaqueous Lyotropic Ionic Liquid Crystals: Preparation, Characterization, and Application in Extraction. Chemistry 2015; 21:9150-6. [DOI: 10.1002/chem.201500306] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Indexed: 11/08/2022]
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14
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Zhang M, Mai W, Zhao L, Guo Y, Qiu H. A polar-embedded C30 stationary phase: Preparation and evaluation. J Chromatogr A 2015; 1388:133-40. [DOI: 10.1016/j.chroma.2015.02.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 02/06/2015] [Accepted: 02/07/2015] [Indexed: 11/26/2022]
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15
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Zhang M, Chen J, Gu T, Qiu H, Jiang S. Novel imidazolium-embedded and imidazolium-spaced octadecyl stationary phases for reversed phase liquid chromatography. Talanta 2014; 126:177-84. [DOI: 10.1016/j.talanta.2014.03.057] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/18/2014] [Accepted: 03/24/2014] [Indexed: 11/27/2022]
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16
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Sun M, Feng J, Chen W, Li L, Duan H, Luo C. Improvement of the chromatographic separation performance of an imidazolium ionic liquid functionalized silica column by in situ anion-exchange with dodecyl sulfonate and dodecylbenzene sulfonate anions. J Sep Sci 2014; 37:1283-8. [PMID: 24616155 DOI: 10.1002/jssc.201400001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 02/09/2014] [Accepted: 02/28/2014] [Indexed: 11/11/2022]
Abstract
The anionic part of ionic liquids can provide additional interactions during chromatographic separations. In this work, the chromatographic separation performance of a silica column functionalized with 1-propyl-3-methylimidazolium chloride ionic liquid was improved by in situ anion-exchange from chloride anions to dodecyl sulfonate anions and dodecylbenzene sulfonate anions. The separation performances of these ionic liquid functionalized phases were investigated and compared with each other using polycyclic aromatic hydrocarbons, phthalates, parabens, and phenols as model compounds. Results indicated that the new columns presented a better chromatographic separation than the original one. This was ascribed retention mechanism from organic anions. The introduction of dodecyl sulfonate anions increased the hydrophobicity of stationary phase. Furthermore, the phenyl groups of dodecylbenzene sulfonate anions could provide an enhanced selectivity to aromatic compounds such as polycyclic aromatic hydrocarbons by π-π interactions. Analysis repeatability of the new columns was satisfactory (RSD of retention time, 0.10-0.40%; RSD of peak area, 0.66-0.84%).
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Affiliation(s)
- Min Sun
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong (University of Jinan), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, China
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Sun M, Feng J, Luo C, Liu X, Jiang S. Quinolinium ionic liquid-modified silica as a novel stationary phase for high-performance liquid chromatography. Anal Bioanal Chem 2014; 406:2651-8. [DOI: 10.1007/s00216-014-7680-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/06/2014] [Accepted: 02/05/2014] [Indexed: 11/30/2022]
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18
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Zhang M, Liang X, Jiang S, Qiu H. Preparation and applications of surface-confined ionic-liquid stationary phases for liquid chromatography. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.09.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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19
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Abstract
Supported ionic liquids (SILs), which refer to ionic liquids (ILs) immobilized on supports, are among the most important derivatives of ILs.
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Affiliation(s)
- Bingwei Xin
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University)
- Ministry of Education
- Jinan, P.R. China
- Key Laboratory of Coordination Chemistry and Functional Materials in Universities of Shandong (Dezhou University)
- Dezhou, P.R. China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials (Shandong University)
- Ministry of Education
- Jinan, P.R. China
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20
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Zhang M, Chen J, Qiu H, Mallik AK, Takafuji M, Ihara H. Homogenous formation and quaternization of urea-functionalized imidazolyl silane and its immobilization on silica for surface-confined ionic liquid stationary phases. RSC Adv 2014. [DOI: 10.1039/c4ra04772a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New strategy for surface modification of silica sphere was proposed on the basis of one-pot urea formation and quaternization of imidazole, resulting in sorbents of high tunability and controllable hydrophobicity.
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Affiliation(s)
- Mingliang Zhang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000, China
- University of Chinese Academy of Sciences
| | - Jia Chen
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000, China
| | - Hongdeng Qiu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000, China
| | - Abul K. Mallik
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555, Japan
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry
- Kumamoto University
- Kumamoto 860-8555, Japan
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21
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Liu X, Lu X, Huang Y, Liu C, Zhao S. Fe3O4@ionic liquid@methyl orange nanoparticles as a novel nano-adsorbent for magnetic solid-phase extraction of polycyclic aromatic hydrocarbons in environmental water samples. Talanta 2013; 119:341-7. [PMID: 24401423 DOI: 10.1016/j.talanta.2013.11.039] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 11/09/2013] [Accepted: 11/13/2013] [Indexed: 11/16/2022]
Abstract
A novel nano-adsorbent, Fe3O4@ionic liquid@methyl orange nanoparticles (Fe3O4@IL@MO NPs), was prepared for magnetic solid-phase extraction (MSPE) of polycyclic aromatic hydrocarbons (PAHs) in environmental water samples. The Fe3O4@IL@MO NPs were synthesized by self-assembly of the ionic liquid 1-octadecyl-3-methylimidazolium bromide (C18mimBr) and methyl orange (MO) onto the surface of Fe3O4 silica magnetic nanoparticles, as confirmed by infrared spectroscopy, ultraviolet-visible spectroscopy and superconducting quantum interface device magnetometer. The extraction performance of Fe3O4@IL@MO NPs as a nano-adsorbent was evaluated by using five PAHs, fluorene (FLu), anthracene (AnT), pyrene (Pyr), benzo(a)anthracene (BaA) and benzo(a)pyrene (BaP) as model analytes. Under the optimum conditions, detection limits in the range of 0.1-2 ng/L were obtained by high performance liquid chromatography-fluorescence detection (HPLC-FLD). This method has been successfully applied for the determination of PAHs in environmental water samples by using the MSPE-HPLC-FLD. The recoveries for the five PAHs tested in spiked real water samples were in the range of 80.4-104.0% with relative standard deviations ranging from 2.3 to 4.9%.
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Affiliation(s)
- Xiaofei Liu
- College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Xin Lu
- College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
| | - Yong Huang
- College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Chengwei Liu
- Department of Anatomy, Guilin Medical College, Guilin 541004, China
| | - Shulin Zhao
- College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China.
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Qiu H, Zhang M, Gu T, Takafuji M, Ihara H. A Sulfonic-Azobenzene-Grafted Silica Amphiphilic Material: A Versatile Stationary Phase for Mixed-Mode Chromatography. Chemistry 2013; 19:18004-10. [DOI: 10.1002/chem.201302746] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Indexed: 11/06/2022]
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23
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Qiu H, Jiang S, Takafuji M, Ihara H. Polyanionic and polyzwitterionic azobenzene ionic liquid-functionalized silica materials and their chromatographic applications. Chem Commun (Camb) 2013; 49:2454-6. [DOI: 10.1039/c3cc00138e] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Bi W, Tian M, Row KH. Evaluation of molecularly imprinted anion-functionalized poly(ionic liquid)s by multi-phase dispersive extraction of flavonoids from plant. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 913-914:61-8. [DOI: 10.1016/j.jchromb.2012.11.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/21/2012] [Accepted: 11/22/2012] [Indexed: 10/27/2022]
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25
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Ray S, Takafuji M, Ihara H. Chromatographic evaluation of a newly designed peptide-silica stationary phase in reverse phase liquid chromatography and hydrophilic interaction liquid chromatography: Mixed mode behavior. J Chromatogr A 2012; 1266:43-52. [DOI: 10.1016/j.chroma.2012.10.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/01/2012] [Accepted: 10/02/2012] [Indexed: 11/17/2022]
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26
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Qiu H, Mallik AK, Takafuji M, Liu X, Jiang S, Ihara H. A new imidazolium-embedded C18 stationary phase with enhanced performance in reversed-phase liquid chromatography. Anal Chim Acta 2012; 738:95-101. [DOI: 10.1016/j.aca.2012.06.018] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 06/09/2012] [Accepted: 06/10/2012] [Indexed: 11/30/2022]
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27
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Enhancement of molecular shape selectivity by in situ anion-exchange in poly(octadecylimidazolium) silica column. J Chromatogr A 2012; 1232:116-22. [DOI: 10.1016/j.chroma.2011.10.065] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 10/19/2011] [Accepted: 10/21/2011] [Indexed: 11/19/2022]
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28
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Bi W, Tian M, Row KH. Facile synthesis and application of poly(ionic liquid)-bonded silica hybrid materials. Analyst 2012; 137:2017-20. [DOI: 10.1039/c2an16096j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Qiu H, Mallik AK, Takafuji M, Jiang S, Ihara H. New poly(ionic liquid)-grafted silica multi-mode stationary phase for anion-exchange/reversed-phase/hydrophilic interaction liquid chromatography. Analyst 2012; 137:2553-5. [DOI: 10.1039/c2an35348b] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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30
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Qiu H, Mallik AK, Sawada T, Takafuji M, Ihara H. New surface-confined ionic liquid stationary phases with enhanced chromatographic selectivity and stability by co-immobilization of polymerizable anion and cation pairs. Chem Commun (Camb) 2012; 48:1299-301. [DOI: 10.1039/c2cc16269e] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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31
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Vidal L, Riekkola ML, Canals A. Ionic liquid-modified materials for solid-phase extraction and separation: a review. Anal Chim Acta 2011; 715:19-41. [PMID: 22244164 DOI: 10.1016/j.aca.2011.11.050] [Citation(s) in RCA: 236] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 11/20/2011] [Accepted: 11/23/2011] [Indexed: 11/15/2022]
Abstract
In recent years, materials science has propelled to the research forefront. Ionic liquids with unique and fascinating properties have also left their footprints to the developments of materials science during the last years. In this review we highlight some of their recent advances and provide an overview at the current status of ionic liquid-modified materials applied in solid-phase extraction, liquid and gas chromatography and capillary electrochromatography with reference to recent applications. In addition, the potential of ionic liquids in the modification of capillary inner wall in capillary electrophoresis is demonstrated. The main target material modified with ionic liquids is silica, but polymers and monoliths have recently joined the studies. Although imidazolium is still clearly the most commonly used ionic liquid for the covalently modification of materials, the exploitation of pyridinium and phosphonium will most probably increase in the future.
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Affiliation(s)
- Lorena Vidal
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland.
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