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Zhang L, Tan QG, Fan JQ, Sun C, Luo YT, Liang RP, Qiu JD. Microfluidics for chiral separation of biomolecules. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Ding A, Jin S, Jin S, Hu K, Lin Z, Liu H, Wang D. Crystal structures of eight 3D molecular adducts derived from bis-imidazole, bis(benzimidazole), and organic acids. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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3
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Raja R, Seshadri S, Santhanam V, Vedhavalli D. Growth and characterization of nonlinear optical crystal – Semicarbazide Picrate. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Jin S, Zhang H, Zhao Y, Jin L, Ye X, Liu H, Wang D. Seven supramolecular frameworks constructed from combination of hydrogen-bonds and other non-covalent associations between organic acids and bis-imidazoles. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.05.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Jin S, Liu H, Gao XJ, Lin Z, Chen G, Wang D. Seven organic salts assembled from hydrogen-bonds of N–H⋯O, O–H⋯O, and C–H⋯O between acidic compounds and bis(benzimidazole). J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.06.077] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Jin S, Wang D. Eight supramolecular assemblies constructed from bis(benzimidazole) and organic acids through strong classical hydrogen bonding and weak noncovalent interactions. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.02.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Jin S, Zhang J, Wang D, Tao L, Zhou M, Shen Y, Chen Q, Lin Z, Gao X. Structure of six organic acid–base adducts from 6-bromobenzo[d]thiazol-2-amine and acidic compounds. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.02.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Sueyoshi K, Koino H, Kitagawa F, Otsuka K. Sensitive enantioseparation by transient trapping-cyclodextrin electrokinetic chromatography. J Chromatogr A 2012; 1269:366-71. [DOI: 10.1016/j.chroma.2012.08.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 07/28/2012] [Accepted: 08/20/2012] [Indexed: 11/16/2022]
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9
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Singh UP, Goel N, Singh G, Srivastava P. Supramolecular architecture of picric acid and pyrazoles: syntheses, structural, computational and thermal studies. Supramol Chem 2012. [DOI: 10.1080/10610278.2012.655276] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Udai P. Singh
- a Department of Chemistry , Indian Institute of Technology Roorkee , Roorkee , 247 667 , India
| | - Nidhi Goel
- a Department of Chemistry , Indian Institute of Technology Roorkee , Roorkee , 247 667 , India
| | - Gurdip Singh
- b Department of Chemistry , DDU Gorakhpur University , Gorakhpur , 273000 , India
| | - Pratibha Srivastava
- b Department of Chemistry , DDU Gorakhpur University , Gorakhpur , 273000 , India
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10
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Sueyoshi K, Hashiba K, Kawai T, Kitagawa F, Otsuka K. Hydrophobic labeling of amino acids: Transient trapping-capillary/microchip electrophoresis. Electrophoresis 2011; 32:1233-40. [DOI: 10.1002/elps.201000567] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 01/04/2011] [Accepted: 01/04/2011] [Indexed: 11/11/2022]
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11
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KITAGAWA F, AIZAWA S, OTSUKA K. Microchip Electrophoresis Using Linear-Imaging UV Detector. BUNSEKI KAGAKU 2011. [DOI: 10.2116/bunsekikagaku.60.725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Fumihiko KITAGAWA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Shiori AIZAWA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Koji OTSUKA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
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12
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Balamurugan P, Jagan R, Sivakumar K. Dihydrogen phosphate mediated supramolecular frameworks in 2- and 4-chloroanilinium dihydrogen phosphate salts. Acta Crystallogr C 2010; 66:o109-13. [PMID: 20203405 DOI: 10.1107/s0108270110001940] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Accepted: 01/15/2010] [Indexed: 11/10/2022] Open
Abstract
The title compounds, 2-chloroanilinium dihydrogen phosphate (2CADHP) and 4-chloroanilinium dihydrogen phosphate (4CADHP), both C(6)H(7)NCl(+) x H(2)PO(4)(-), form two-dimensional supramolecular organic-inorganic hybrid frameworks. In 2CADHP, the dihydrogen phosphate anions form a double-stranded anionic chain generated parallel to the [010] direction through O-H...O hydrogen bonds, whereas in 4CADHP they form a two-dimensional supramolecular net extending parallel to the crystallographic (001) plane into which the cations are linked through strong N-H...O hydrogen bonds.
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Affiliation(s)
- P Balamurugan
- Department of Physics, Dhanalakshmi College of Engineering, Manimangalam, Chennai 601 301, India
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13
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Nagl S, Schulze P, Ludwig M, Belder D. Progress in microchip enantioseparations. Electrophoresis 2009; 30:2765-72. [DOI: 10.1002/elps.200900153] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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KITAGAWA F, AIZAWA S, OTSUKA K. High-speed Analysis of Proteins by Microchip Isoelectric Focusing with Linear-imaging UV Detection. ANAL SCI 2009; 25:979-84. [DOI: 10.2116/analsci.25.979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Pharmaceutical applications of isoelectric focusing on microchip with imaged UV detection. J Chromatogr A 2008; 1181:145-52. [DOI: 10.1016/j.chroma.2007.12.046] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Revised: 11/20/2007] [Accepted: 12/18/2007] [Indexed: 11/24/2022]
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16
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Sueyoshi K, Kitagawa F, Otsuka K. On-Line Sample Preconcentration and Separation Technique Based on Transient Trapping in Microchip Micellar Electrokinetic Chromatography. Anal Chem 2008; 80:1255-62. [DOI: 10.1021/ac702049r] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenji Sueyoshi
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Fumihiko Kitagawa
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Koji Otsuka
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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17
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Yamashita T, Kodama S, Ohto M, Nakayama E, Kemmei T, Muramoto T, Yamaguchi A, Teramae N, Takayanagi N. Utilization of Nanometre-order Diameter Columns inside Porous Anodic Alumina for Chromatography Chip System. CHEM LETT 2008. [DOI: 10.1246/cl.2008.18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Sueyoshi K, Kitagawa F, Otsuka K. High-Performance Microchip Electrophoresis by Using On-Line Sample Preconcentration and Partial Filling Techniques. BUNSEKI KAGAKU 2008. [DOI: 10.2116/bunsekikagaku.57.1001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kenji Sueyoshi
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Fumihiko Kitagawa
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Koji Otsuka
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
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19
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Synthesis, spectral and structural characterisation of ditelluroxanes: μ-oxo-bis[nitrato-; 2,4,6-trinitrophenolato-dialkyl tellurium (IV)]. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.02.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Gübitz G, Schmid MG. Advances in chiral separation using capillary electromigration techniques. Electrophoresis 2007; 28:114-26. [PMID: 17136739 DOI: 10.1002/elps.200600411] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This review gives an overview of recent developments in CZE, EKC, and CEC covering the literature since the year 2004. Since there appeared a special issue on applications, this review focuses on the progress in electromigration techniques and new methodological developments. New techniques, new chiral selectors as well as new chiral stationary phases for CEC are discussed.
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Affiliation(s)
- Gerald Gübitz
- Department of Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, Karl-Franzens-University, Graz, Austria.
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21
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Vlčková M, Stettler AR, Schwarz MA. Microchip Affinity Capillary Electrophoresis: Applications and Recent Advances. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070600574754] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Markéta Vlčková
- a Universität Basel, Departement Chemie , Basel, Switzerland
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22
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Van Eeckhaut A, Michotte Y. Chiral separations by capillary electrophoresis: Recent developments and applications. Electrophoresis 2006; 27:2880-95. [PMID: 16688697 DOI: 10.1002/elps.200500375] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This paper provides an overview of the different classes of chiral selectors that are used in CE. The main properties of every class are described, together with the mechanism of enantioseparation. Newly introduced selectors are also discussed. Pharmaceutical and biomedical applications published from January 2004 till March 2005 are summarized.
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Affiliation(s)
- Ann Van Eeckhaut
- Department of Pharmaceutical Chemistry, Drug Analysis and Drug Information, Pharmaceutical Institute, Vrije Universiteit Brussel, Brussels, Belgium
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23
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Wada A, Harada M, Okada T. Kinetic Monitoring of Electrophoretically Induced Solute Reaction by Axial Absorption Detection with Liquid-Core Waveguide. Anal Chem 2006; 78:4709-12. [PMID: 16808486 DOI: 10.1021/ac060175c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Teflon AF-2400 capillary has been used for capillary electrophoretic separation as well as for liquid-core waveguide for axial absorption detection. This separation/detection scheme has allowed continuous monitoring of electrophoretically induced reactions. In this paper, the decomposition of Cd2+ complex with 4-(2-pyridylazo)resorcinol has been tested, and its decomposition kinetics has been studied. A simple modeling has predicted the single-exponential decay of the absorbance detected by the present axial absorption detector and has allowed the estimation of the decomposition rate constant for this reaction.
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Affiliation(s)
- Akira Wada
- Department of Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
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24
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Abstract
The direction of modern analytical techniques is to push for lower detection limits, improved selectivity and sensitivity, faster analysis time, higher throughput, and more inexpensive analysis systems with ever-decreasing sample volumes. These very ambitious goals are exacerbated by the need to reduce the overall size of the device and the instrumentation - the quest for functional micrototal analysis systems epitomizes this. Microfluidic devices fabricated in glass, and more recently, in a variety of polymers, brings us a step closer to being able to achieve these stringent goals and to realize the economical fabrication of sophisticated instrumentation. However, this places a significant burden on the detection systems associated with microchip-based analysis systems. There is a need for a universal detector that can efficiently detect sample analytes in real time and with minimal sample manipulation steps, such as lengthy labeling protocols. This review highlights the advances in uncommon or less frequently used detection methods associated with microfluidic devices. As a result, the three most common methods - LIF, electrochemical, and mass spectrometric techniques - are omitted in order to focus on the more esoteric detection methods reported in the literature over the last 2 years.
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Affiliation(s)
- Pertti J Viskari
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA
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25
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Erny GL, Cifuentes A. Liquid separation techniques coupled with mass spectrometry for chiral analysis of pharmaceuticals compounds and their metabolites in biological fluids. J Pharm Biomed Anal 2006; 40:509-15. [PMID: 16326060 DOI: 10.1016/j.jpba.2005.10.044] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2005] [Revised: 10/25/2005] [Accepted: 10/26/2005] [Indexed: 11/17/2022]
Abstract
Determination of the chiral composition of drugs is nowadays a key step in order to determine purity, activity, bioavailability, biodegradation, etc., of pharmaceuticals. In this article, works published for the last 5 years on the analysis of chiral drugs by liquid separation techniques coupled with mass spectrometry are reviewed. Namely, chiral analysis of pharmaceuticals including, e.g., antiinflammatories, antihypertensives, relaxants, etc., by liquid chromatography-mass spectrometry and capillary electrophoresis-mass spectrometry are included. The importance and interest of the analysis of the enantiomers of the active compound and its metabolites in different biological fluids (plasma, urine, cerebrospinal fluid, etc.) are also discussed.
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Affiliation(s)
- G L Erny
- Institute of Industrial Fermentations (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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Nakagawa H, Kitagawa S, Ohtani H. Effect of the Net Surface Charge Density of Heptakis-6-bromo-6-deoxy-.BETA.-cyclodextrin Bonded Silica Gels on the Retention Behaviors of Neutral Cresol Isomers in HPLC. ANAL SCI 2006; 22:737-42. [PMID: 16770054 DOI: 10.2116/analsci.22.737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of the surface charge density of heptakis-6-bromo-6-deoxy-beta-cyclodextrin (beta-CD-BR) bonded silica gels, which was used as the stationary phase of a packed capillary column for HPLC, was investigated concerning the retention behaviors of neutral cresol isomers. On the whole, the retention factors of the cresol isomers increased with an increase in the pH values of the mobile phase, although they were slightly smaller at pH 6.1 than at pH 4.7. An investigation on the retention variation using a van't Hoff plot revealed that the increase in the retention factor (k) at a higher pH region could be mainly attributed to the increase in DeltaS, while a partial decrease in k around pH 5 - 6 was caused by a decrease in the -DeltaH/T value. On the other hand, a measurement of the electroosmotic flow velocity under various pH of the mobile phase solutions revealed that the retention variations of the neutral cresol isomers were strongly correlated with the surface charge on the packing materials. The positive charge of secondary ammonium functional groups to bind beta-CD-BR inhibit the insertion of the cresol isomers into the cavity of beta-CD-BR while reducing the retention factor, whereas the negative charge of silanol group enhanced it through a local change in the mobile phase composition.
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Affiliation(s)
- Hiroyuki Nakagawa
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Showa, Japan
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27
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Abstract
Chiral separations of FITC-labeled basic drugs on multichannel microfluidic chips with LIF detector were investigated. A preliminary screening procedure for seven neutral CDs was performed under optimized conditions for chiral separations of three FITC-labeled drugs (baclofen, norfenefrine, and tocainide) on a mono-channel microfluidic chip. According to the results of screening, FITC-baclofen and FITC-norfenefrine as well as two chiral selectors including gamma-CD and dimethyl-beta-CD (DM-beta-CD) were selected as models to perform chiral separations on a two-channel chip. FITC-baclofen enantiomers were separated completely by gamma-CD in one channel, while resolution of FITC-norfenefrine enantiomers was achieved by DM-beta-CD in the other channel in the same run. Furthermore, the feasibility of using one chiral selector to separate multiple chiral samples was studied on a four-channel chip. These results show that multichannel chip has a potential for chiral high-throughput screening.
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Affiliation(s)
- Yan Gao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
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28
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Affiliation(s)
- Fumihiko KITAGAWA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Koji OTSUKA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
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