1
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Li T, Li H, Chen J, Yu Y, Chen S, Wang J, Qiu H. Histidine-modified pillar[5]arene-functionalized mesoporous silica materials for highly selective enantioseparation. J Chromatogr A 2024; 1727:465011. [PMID: 38776604 DOI: 10.1016/j.chroma.2024.465011] [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: 02/10/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Chiral enantiomers, especially the enantiomers of chiral drugs often exhibit different pharmacological activity, metabolism and toxicity, thus it is of great research significance to scientifically and reasonably develop single chiral drugs with low toxicity and high efficiency. Among them, high performance liquid chromatographic techniques based on chiral stationary phases (CSPs) has become one of the most attractive methods used to evaluate the enantiomeric purity of single-enantiomers compound of pharmacological relevance. In this work, pillar[5]arene functionalized with L- and D-histidine, respectively, were modified on the surface of mesoporous silica as novel chiral stationary phases called L/DHis-BP5-Sil. Notably, L/D-histidine had the characteristics of low steric hindrance and easy derivatization. Although the π-π interaction of imidazole group was weaker than that of benzene ring, the benzene ring bonding imidazole-conjugated ring in the structure produced better enantioseparation effect. The results showed that L/DHis-BP5-Sil can separate a variety of complex structural enantiomers with excellent reproducibility, thermal stability and separation performance. Hence, the unique advantage of the highly selective separation of L/DHis-BP5-Sil provides new insights into the enantioseparation field.
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Affiliation(s)
- Tong 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; Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Shenyang 110819, 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.
| | - 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
| | - Shuai Chen
- 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; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China.
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2
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Lu T, Li H, Rao H, Sun K, Liu X, Zhao L. Propanediamine modified pillar[5]arene: A novel stationary phase for the high selectivity separation of versatile analytes. J Chromatogr A 2024; 1730:465134. [PMID: 38959655 DOI: 10.1016/j.chroma.2024.465134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/28/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
The unique properties of pillar[5]arene, including hydrophobic cavities, π-π conjugated and easy modification, make it a promising candidate as stationary phase for HPLC. Herein, we fabricated a novel propanediamine modified pillar[5]arene bonded silica as the stationary phase (PDA-BP5S) for reversed-phase liquid chromatography (RPLC). Benefiting from the significant hydrophobicity, π-π conjugative, p-π effect, and hydrogen bonding, the PDA-BP5S packed column showed high separation performance of versatile analytes involving polycyclic aromatic hydrocarbons, alkyl benzenes, phenols, arylamine, phenylethane/styrene/ phenylacetylene, toluene/m-xylene/mesitylene, halobenzenes, benzenediol and nitrophenol isomers. Especially, the separation of halobenzenes appeared to be controlled by both the size of the halogen substituents and the strength of the noncovalent bonding interactions, which was further confirmed by molecular dynamics simulation. The satisfactory separation and repeatability revealed the promising prospects of amine-pillar[5]arene-based stationary phase for RPLC.
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Affiliation(s)
- Taotao Lu
- School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, PR China.
| | - Hui Li
- Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
| | - Honghong Rao
- School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, PR China
| | - Kanjun Sun
- School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, PR China
| | - Xianyu Liu
- School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, PR China
| | - Liang Zhao
- Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
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3
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Li T, Li H, Chen J, Yu Y, Chen S, Wang J, Qiu H. Preparation and evaluation of two chiral stationary phases based on imidazolyl-functionalized bromoethoxy pillar[5]arene-bonded silica. J Chromatogr A 2024; 1720:464799. [PMID: 38458140 DOI: 10.1016/j.chroma.2024.464799] [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: 01/16/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024]
Abstract
Chiral pillar[5]arene-based mesoporous silica, an emerging class of chiral structure, possesses excellent characteristics such as abundant chiral active sites, encapsulated cavity and excellent chiral modification, which make them a promising candidate as new chiral stationary phases (CSPs) in enantioseparation. In this study, two imidazole-containing (S)-1-(4-phenyl-1H-imidazol-2-yl)ethanamine and (S)-Histidinol were respectively modified to bromoethoxy pillar[5]arene-bonded silica to construct new chiral stationary phases (sPIE-BP5-Sil and sHol-BP5-Sil) for the separation and analysis of enantiomers. The separation conditions such as mobile phase composition, flow rate and temperature were optimized. Under optimal conditions, both sPIE-BP5-Sil and sHol-BP5-Sil showed good separation performance for different types of enantiomers. Interestingly, sPIE-BP5-Sil and sHol-BP5-Sil showed better enantioselectivity for chiral aromatic compounds and chiral aliphatic compounds, respectively. This enantioseparation result was closely related to the presence of additional aromatic rings and abundant hydroxyl groups in the side chains of the two chiral groups. In addition, the enantioseparation process was further studied by molecular docking simulation. Therefore, this work provided a new strategy for the preparation and application of imidazolyl-derived pillar[5]arene-based chiral stationary phases, which can be efficiently used for screening and separating enantiomers.
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Affiliation(s)
- Tong Li
- 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
| | - 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.
| | - 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
| | - Shuai Chen
- 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.
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4
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Liu H, Wu Z, Chen J, Wang J, Qiu H. Recent advances in chiral liquid chromatography stationary phases for pharmaceutical analysis. J Chromatogr A 2023; 1708:464367. [PMID: 37714014 DOI: 10.1016/j.chroma.2023.464367] [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: 07/01/2023] [Revised: 08/23/2023] [Accepted: 09/05/2023] [Indexed: 09/17/2023]
Abstract
Chirality is a common phenomenon in nature. Different enantiomers of chiral drug compounds have obvious differences in their effects on the human body. Therefore, the separation of chiral drugs plays an extremely important role in the safe utilization of drugs. High-performance liquid chromatography (HPLC) is an effective tool for the separation and analysis of compounds, in which the chromatographic packing plays a key role in the separation. Chiral pharmaceutical separation and analysis in HPLC rely on chiral stationary phases (CSPs). Thus, various CSPs are being developed to meet the needs of chiral drug separation and analysis. In this review, recent developments in CSPs, including saccharides (cyclodextrin, cellulose, amylose and chitosan), macrocycles (macrocyclic glycopeptides, pillar[n]arene and polyamide) and porous organic materials (metal-organic frameworks, covalent organic frameworks, and porous organic cages), for pharmaceutical analysis in HPLC were summarized, the advantages and disadvantages of various stationary phases were introduced, and their development prospects were discussed.
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Affiliation(s)
- Huifeng 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; Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Zhihai Wu
- 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.
| | - Jianhua Wang
- Department of Chemistry, 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.
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5
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Li Y, Jin X, Xiao Y, Ma X, Wang Y. Investigation of the chiral recognition role of cyclodextrin hydroxyl moieties via high performance liquid chromatography. Analyst 2023; 148:4987-4994. [PMID: 37667869 DOI: 10.1039/d3an01033c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Cyclodextrin (CD) is known to afford excellent enantioselectivities due to its hydrophobic cavity and external H-bonding sites from hydroxyl moieties. However, there is still a lack of direct and comprehensive evidence clearly illustrating the origin of the important H-bonding effect. Regarding this issue, herein, four allylimidazole CD derivatives by selective substitution of the primary (6-position) and/or secondary (2,3-position) CD were synthesized and clicked onto silica surfaces to afford the corresponding chiral stationary phases (CSPs). The chiral chromatographic performances were systematically evaluated by separating 35 racemic analytes including isoxazolines, dansyl-amino acids, flavonoids and other racemates under reversed-phase HPLC. The chiral selection factors (α) and retention times (k) of the analytes on the as-prepared CSPs were comprehensively compared and it reveals that the enantioseparation ability was significantly altered due to the selective substituents of CD hydroxyl groups. The natural allylimidazole CD CSP (AICDCSP) was superior to the 6-O-tert-butyldimethylsilyl AICDCSP (6-TBDMAICDCSP) for most analytes. Dansyl amino acids and Ar-Pys were well separated on AICDCSP and 6-TBDMAICDCSP, where dansyl amino leucine gained the highest resolution up to 4.72 on AICDCSP, and flavonoids and Ar-Oprs were only separated on AICDCSP. These interesting separation results demonstrate that the secondary hydroxyl groups play a pivotal role in the separation of chiral compounds. In addition, the size of the CD cavity and the choice of solute also have an effect on the separation of substances. The mechanism involved in enantioselective discrimination of the selectively substituted CDs was further investigated by the molecular docking simulation.
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Affiliation(s)
- Yuan Li
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300075, China.
| | - Xiaoning Jin
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300075, China.
| | - Yin Xiao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Xiaofei Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300075, China.
| | - Yong Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin, 300075, China.
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6
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Liu H, Chen J, Chen M, Wang J, Qiu H. Recent development of chiral ionic liquids for enantioseparation in liquid chromatography and capillary electrophoresis: A review. Anal Chim Acta 2023; 1274:341496. [PMID: 37455089 DOI: 10.1016/j.aca.2023.341496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 07/18/2023]
Abstract
Ionic liquids (ILs), which are salts in a molten state below 100 °C, have become a hot topic of research in various fields because of their negligible vapour pressure, high thermal stability, and tunable viscosity. Chiral ionic liquids (CILs) can be applied in chromatography and capillary electrophoresis fields to improve the performance of enantiomeric separation, such as chiral stationary phases (CSPs) and mobile phase additives in high-performance liquid chromatography (HPLC); CSPs in gas chromatography (GC); and background electrolyte additives (BGE), chiral ligands and chiral selectors (CSs) in capillary electrophoresis (CE). This review focuses on the applications of CILs in HPLC and CE for the separation of enantiomers in the past five years. The mechanism for separating enantiomers was explained, and the prospect of the application of CILs in chiral liquid chromatography (LC) and CE analysis was also discussed.
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Affiliation(s)
- Huifeng Liu
- Department of Chemistry, 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
| | - 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.
| | - Mingli Chen
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Jianhua Wang
- Department of Chemistry, 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 and Chemical Engineering, Gannan Normal University, Ganzhou, 341000, China.
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7
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Niu X, Zhao R, Yan S, Pang Z, Li H, Yang X, Wang K. Chiral Materials: Progress, Applications, and Prospects. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303059. [PMID: 37217989 DOI: 10.1002/smll.202303059] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/10/2023] [Indexed: 05/24/2023]
Abstract
Chirality is a universal phenomenon in molecular and biological systems, denoting an asymmetric configurational property where an object cannot be superimposed onto its mirror image by any kind of translation or rotation, which is ubiquitous on the scale from neutrinos to spiral galaxies. Chirality plays a very important role in the life system. Many biological molecules in the life body show chirality, such as the "codebook" of the earth's biological diversity-DNA, nucleic acid, etc. Intriguingly, living organisms hierarchically consist of homochiral building blocks, for example, l-amino acids and d-sugars with unknown reason. When molecules with chirality interact with these chiral factors, only one conformation favors the positive development of life, that is, the chiral host environment can only selectively interact with chiral molecules of one of the conformations. The differences in chiral interactions are often manifested by chiral recognition, mutual matching, and interactions with chiral molecules, which means that the stereoselectivity of chiral molecules can produce changes in pharmacodynamics and pathology. Here, the latest investigations are summarized including the construction and applications of chiral materials based on natural small molecules as chiral source, natural biomacromolecules as chiral sources, and the material synthesized by design as a chiral source.
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Affiliation(s)
- Xiaohui Niu
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Rui Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Simeng Yan
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Zengwei Pang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Hongxia Li
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Xing Yang
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Kunjie Wang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
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8
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Liu C, Quan K, Chen J, Shi X, Qiu H. Chiral metal-organic frameworks and their composites as stationary phases for liquid chromatography chiral separation: A minireview. J Chromatogr A 2023; 1700:464032. [PMID: 37148566 DOI: 10.1016/j.chroma.2023.464032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/16/2023] [Accepted: 04/26/2023] [Indexed: 05/08/2023]
Abstract
Chiral metal organic frameworks (CMOFs) are a kind of crystal porous framework material that has attracted increasing attention due to the customizable combination of metal nodes and organic ligands. In particular, the highly ordered crystal structure and rich adjustable chiral structure make it a promising material for developing new chiral separation material systems. In this review, the progress of CMOFs and their different types of composites used as chiral stationary phases (CSPs) in liquid chromatography for enantioseparation are discussed. The characteristics of CMOFs and their composites are summarized, aiming to provide new ideas for the development of CMOFs with better performance and further promote the application of CMOFs materials in enantioselective high-performance liquid chromatography (HPLC).
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Affiliation(s)
- Chunqiang 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; University of Chinese Academy of Sciences, Beijing 100049, 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.
| | - 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; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaofeng Shi
- Institute of Materia Medica, Gansu Provincial Cancer Hospital, Lanzhou 730050, 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; University of Chinese Academy of Sciences, Beijing 100049, China.
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9
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Affiliation(s)
- Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shu-Ting Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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10
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Fluorometric/electrochemical dual-channel sensors based on carbon quantum dots for the detection and information anti-counterfeiting. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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11
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Zhang YP, Li K, Xiong LX, Wang BJ, Xie SM, Zhang JH, Yuan LM. “Click” preparation of a chiral macrocycle-based stationary phase for both normal-phase and reversed-phase high performance liquid chromatography enantioseparation. J Chromatogr A 2022; 1683:463551. [DOI: 10.1016/j.chroma.2022.463551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022]
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12
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High mechanical strength conductive inorganic–organic composite membranes for chiral separation and in situ cleaning. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Experimental Study on the Treatment of Landfill Leachate by Electro-Assisted ZVI/UV Synergistic Activated Persulfate System. Catalysts 2022. [DOI: 10.3390/catal12070768] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
To solve the problem of the poor treatment of high concentration landfill leachate, an electro-assisted ultraviolet (UV)/zero-valent iron (ZVI) synergic activated persulfate (PS) system was used to treat landfill leachate. The effects of PS and ZVI dosage, initial pH value, and current density on the removal efficiency of COD and NH3-N in landfill leachate were investigated. The treatment effects of single PS, single electrochemical, UV/PS, electro-assisted ZVI activated PS, and electro-assisted ZVI/UV co-activated PS were compared. At the same time, UV-visible and three-dimensional fluorescence spectroscopy were performed on the landfill leachate before and after treatment. The results show that under the optimal conditions of initial pH = 3, the dosage of PS/12COD = 1, ZVI = 1.5 g/L, current density 62.5 mA/cm2, and t = 6 h, most of the macromolecular organic substances such as humic acid and fulvic acid were removed. Removal efficiencies of COD, NH3-N, and Chroma reached 81.99%, 89.90%, and 99.75%, respectively. The BOD5/COD value increased from 0.23 to 0.46. In addition, the radical identification results showed that the degradation of COD was due to the combined action of sulfate radicals (SO4•−) and hydroxyl radicals (•OH) and that SO4•− was dominant. The combined means of synergistic activation of PS for landfill leachate treatment was significantly better than that of single means of PS activation, confirming that electrically assisted ZVI/UV synergistic activation of PS is a promising method for landfill leachate treatment.
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14
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Recent Advances on Chiral Mobile Phase Additives: A Critical Review. JOURNAL OF ANALYSIS AND TESTING 2022. [DOI: 10.1007/s41664-022-00222-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Chao H, Qiu L, Zhou X, Cui P, Wang C, Hu H, Jiang P, Shi H, Xuan Y, Wang J. Separation of ofloxacin enantiomers by CE with fluorescence detection using DNA oligonucleotides as chiral selectors. J Sep Sci 2022; 45:2699-2707. [PMID: 35544319 DOI: 10.1002/jssc.202200209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/06/2022] [Accepted: 05/06/2022] [Indexed: 11/09/2022]
Abstract
This study used CE with fluorescence detection- and partial-filling mode-based method for chiral separation of ofloxacin. The DNA oligonucleotides with different base sequences were studied as potential chiral selectors including DNA tetrahedron, G-quadruplex, and G-riched double-strand DNA. Under the optimized conditions, all the DNA chiral selectors exhibited excellent chiral separation capabilities with a resolution higher than 1.5. The electrophoretic behavior of the ofloxacin enantiomer might result from the intermediate conjugate with different stabilities between chiral selectors and analytes by a combination of the hydrogen bond and spatial recognition structure. Moreover, satisfactory repeatability regarding run-to-run and interday repeatability was obtained, and all the RSD values of migration times and resolutions were below 4% (n = 6). Conclusively, both spatial structure and arrangement of the G bases potentiated the chiral separation capability of DNA for ofloxacin enantiomer. This work offered a stepping stone for enantioseparation using DNA as chiral selectors. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hufei Chao
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Lin Qiu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Xinpei Zhou
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Pengfei Cui
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Cheng Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Huaanzi Hu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Pengju Jiang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Honglei Shi
- Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu, 213017, P. R. China.,The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, 213017, P. R. China
| | - Yang Xuan
- Key Lab of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Science, Dalian Minzu University, Dalian, Liaoning, 116600, China
| | - Jianhao Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, 213164, China
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16
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Fan C, Chen J, Li H, Quan K, Qiu H. Preparation and evaluation of two silica-based hydrophilic-hydrophobic and acid-base balanced stationary phases via in-situ surface polymerization. J Chromatogr A 2022; 1667:462912. [DOI: 10.1016/j.chroma.2022.462912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 01/04/2023]
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Shi C, Li H, Shi XF, Zhao L, Qiu H. Chiral pillar[5]arene-functionalized silica microspheres: synthesis, characterization and enantiomer separation. Chem Commun (Camb) 2022; 58:3362-3365. [DOI: 10.1039/d1cc06978k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral pillar[5]arene-functionalized silica microspheres were prepared and characterized for the first time, which can be used as a new kind of chiral stationary phases for effective enantioseparation under reversed-phase and...
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Surface-up construction of quinine bridged functional cyclodextrin for single-column versatile enantioseparation. J Chromatogr A 2021; 1664:462786. [PMID: 34986442 DOI: 10.1016/j.chroma.2021.462786] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/11/2021] [Accepted: 12/23/2021] [Indexed: 11/22/2022]
Abstract
Seeking for single-column versatile chiral separation methodology is the ultimate goal for analysts engrossed in enantioseparation. However, the versatility and selectivity are always contradictory due to negative influence among the recognition domains and the relatively low surface concentrations in a limited support surface area. Herein, we reported a novel series of quinine (QN) bridged cyclodextrin (CD) chiral stationary phases (CSPs) with satisfied surface concentration of both selectors, prepared via a facile surface-up 'thiol-ene click' approach, where QN and CD can not only nicely exhibit their individual resolution capability but also afford possible synergism in resolving difficult-to-separate analytes. QN bridged phenylcarbamoylated CD CSP exhibits powerful resolution ability by positive combining the resolving ability of QN and functional CD and achieves the resolution of almost a double number of racemates over QN or CD CSPs. Meanwhile, it exhibits comparable and even better chiral selectivity over the widely used chemical-bonded chiral column (CHIRALPAK® IA, CHIRALPAK® IB and CHIRALPAK® IC of Daicel) for the studied analytes. This work thus advances the duplex QN-CD structure as a relatively versatile platform for chiral resolution and commendably promotes the design of functional CSPs with chiral molecular bridge.
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Pei Y, Li X, Zeng G, Gao Y, Wen T. Chiral stationary phases based on lactide derivatives for high-performance liquid chromatography. J Chromatogr A 2021; 1661:462705. [PMID: 34879306 DOI: 10.1016/j.chroma.2021.462705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/12/2021] [Accepted: 11/23/2021] [Indexed: 01/02/2023]
Abstract
Lactide is a natural and renewable lactone cyclic ester-containing intrinsic chiral center, providing an affordable natural compound that is potential for the development of chiral polymers. In this work, we reported two novel chiral stationary phases (CSPs) based on lactide derivatives, methylene lactide (MLA), for high-performance liquid chromatography (HPLC). By using free radical polymerization, chemically bonded CSPs of poly(methylene lactide) (PMLA) and side-chain modified PMLA by aminolysis (N-PMLA) can be prepared. Also, poly(l-lactic acid) (PLLA) was prepared as a control. The chiral resolution performance of the chromatographic columns was examined in both reversed-phase and normal-phase modes. PMLA and N-PMLA CSPs exhibited fairly good chiral recognition ability, whereas the separation ability of PLLA is much weaker. This work provides a new platform for the development of high-performance CSPs from affordable natural products.
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Affiliation(s)
- Yuanyuan Pei
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China 510640; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China 510640
| | - Xinyu Li
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China 510640; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China 510640
| | - Guangjian Zeng
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China 510640; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China 510640
| | - Yuting Gao
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China 510640; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China 510640
| | - Tao Wen
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China 510640; Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou, China 510640.
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