1
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Li H, Xu Z, Zhang S, Jia Y, Zhao Y. Construction of Lewis Pairs for Optimal Enantioresolution via Recognition-Enabled “Chromatographic” 19F NMR Spectroscopy. Anal Chem 2022; 94:2023-2031. [DOI: 10.1021/acs.analchem.1c03783] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Huanhuan Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Zhenchuang Xu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Siquan Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Yushu Jia
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Yanchuan Zhao
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
- Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
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2
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Ma H, Luo D, Zhao Q, Liu R, Zhang Z, Hou X, Sun X, Wang Y. Crown ether and crown ether/K+ complex assisted DOSY NMR: A versatile tool for positional isomers identification in aqueous solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117884] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Pedinielli F, Leroy R, Martinez A, Nuzillard JM, Lameiras P. ViscY NMR experiments in phosphoric acid as a viscous solvent for individualization of small molecules within mixtures by spin diffusion. Analyst 2021; 146:5316-5325. [PMID: 34338684 DOI: 10.1039/d1an00899d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The analysis of small molecules within complex mixtures is a particularly difficult task when dealing with the study of metabolite mixtures or chemical reaction media. This issue has fostered in recent years an active search for effective and practical solutions. In this context, the ViscY NMR approach has been recently proposed. ViscY collectively designates the NMR experiments that take advantage of spin diffusion in highly viscous solvents or solvent blends for the individualization of the NMR spectra of small molecule mixture components. Two viscous media were prepared from ortho-phosphoric acid (85%) solution by dilution with either D2O or DMSO-d6, thus providing solvent blends with slightly different polarities in which all liquid-state NMR experiments can be carried out easily. Two mixtures, one of four structurally close dipeptides and one of four low-polarity phosphorus-containing compounds, were used for the method assessment, using ViscY experiments such as homonuclear selective 1D and 2D 1H NOESY experiments, heteronuclear 2D 1H-15N/1H-31P HSQC-NOESY and 1H-13C/1H-15N/1H-31P NOAH experiments.
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Affiliation(s)
- Francois Pedinielli
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France.
| | - Ritchy Leroy
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France.
| | - Agathe Martinez
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France.
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France.
| | - Pedro Lameiras
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France.
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4
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Lameiras P, Nuzillard JM. Tailoring the nuclear Overhauser effect for the study of small and medium-sized molecules by solvent viscosity manipulation. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2021; 123:1-50. [PMID: 34078536 DOI: 10.1016/j.pnmrs.2020.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 11/06/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
The nuclear Overhauser effect (NOE) is a consequence of cross-relaxation between nuclear spins mediated by dipolar coupling. Its sensitivity to internuclear distances has made it an increasingly important tool for the determination of through-space atom proximity relationships within molecules of sizes ranging from the smallest systems to large biopolymers. With the support of sophisticated FT-NMR techniques, the NOE plays an essential role in structure elucidation, conformational and dynamic investigations in liquid-state NMR. The efficiency of magnetization transfer by the NOE depends on the molecular rotational correlation time, whose value depends on solution viscosity. The magnitude of the NOE between 1H nuclei varies from +50% when molecular tumbling is fast to -100% when it is slow, the latter case corresponding to the spin diffusion limit. In an intermediate tumbling regime, the NOE may be vanishingly small. Increasing the viscosity of the solution increases the motional correlation time, and as a result, otherwise unobservable NOEs may be revealed and brought close to the spin diffusion limit. The goal of this review is to report the resolution of structural problems that benefited from the manipulation of the negative NOE by means of viscous solvents, including examples of molecular structure determination, conformation elucidation and mixture analysis (the ViscY method).
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Affiliation(s)
- Pedro Lameiras
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne, CNRS, ICMR UMR 7312, 51097 Reims, France
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5
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Perea-Buceta J, Rico Del Cerro D, Kilpeläinen I, Heikkinen S. Incorporated diffusion ordered heteronuclear multiple bond correlation spectroscopy, 3D iDOSY-HMBC. Merging of diffusion delay with long polarization transfer delay of HMBC. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2021; 323:106892. [PMID: 33387959 DOI: 10.1016/j.jmr.2020.106892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
3D iDOSY-HMBC pulse sequences allow the simplification of HMBC data of mixtures via separation in the diffusion domain. The presented methods utilize incorporated DOSY approach, iDOSY, where the existing delays of the basic pulse sequence are utilized for diffusion attenuation. In the simplest form of the proposed 3D iDOSY-HMBC sequences, no extra delays or RF-pulses were required, only two diffusion gradients were added within HMBC polarization transfer delay.
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Affiliation(s)
- Jesus Perea-Buceta
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland
| | - Daniel Rico Del Cerro
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland
| | - Ilkka Kilpeläinen
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland
| | - Sami Heikkinen
- Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland.
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6
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Day IJ. Matrix-assisted DOSY. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2020; 116:1-18. [PMID: 32130955 DOI: 10.1016/j.pnmrs.2019.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/30/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
The analysis of mixtures by NMR spectroscopy is challenging. Diffusion-ordered NMR spectroscopy enables a pseudo-separation of species based on differences in their translational diffusion coefficients. Under the right circumstances, this is a powerful technique; however, when molecules diffuse at similar rates separation in the diffusion dimension can be poor. In addition, spectral overlap also limits resolution and can make interpretation challenging. Matrix-assisted diffusion NMR seeks to improve resolution in the diffusion dimension by utilising the differential interaction of components in the mixture with an additive to the solvent. Tuning these matrix-analyte interactions allows the diffusion resolution to be optimised. This review presents the background to matrix-assisted diffusion experiments, surveys the wide range of matrices employed, including chromatographic stationary phases, surfactants and polymers, and demonstrates the current state of the art.
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Affiliation(s)
- Iain J Day
- School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, UK.
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7
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Lameiras P, Mougeolle S, Pedinielli F, Nuzillard JM. Polar mixture analysis by NMR under spin diffusion conditions in viscous sucrose solution and agarose gel. Faraday Discuss 2019; 218:233-246. [DOI: 10.1039/c8fd00226f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A viscous sucrose solution is used for the first time to access individual NMR spectra of mixture components under spin diffusion conditions.
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Affiliation(s)
- Pedro Lameiras
- Université de Reims Champagne-Ardenne
- Institut de Chimie Moléculaire de Reims
- CNRS UMR 7312
- 51687 Reims Cedex 02
- France
| | - Simon Mougeolle
- Université de Reims Champagne-Ardenne
- Institut de Chimie Moléculaire de Reims
- CNRS UMR 7312
- 51687 Reims Cedex 02
- France
| | - François Pedinielli
- Université de Reims Champagne-Ardenne
- Institut de Chimie Moléculaire de Reims
- CNRS UMR 7312
- 51687 Reims Cedex 02
- France
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne
- Institut de Chimie Moléculaire de Reims
- CNRS UMR 7312
- 51687 Reims Cedex 02
- France
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8
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Jütten L, Ramírez-Gualito K, Weilhard A, Albrecht B, Cuevas G, Fernández-Alonso MD, Jiménez-Barbero J, Schlörer NE, Diaz D. Exploring the Role of Solvent on Carbohydrate-Aryl Interactions by Diffusion NMR-Based Studies. ACS OMEGA 2018; 3:536-543. [PMID: 31457911 PMCID: PMC6641296 DOI: 10.1021/acsomega.7b01630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/28/2017] [Indexed: 05/26/2023]
Abstract
Carbohydrate-protein interactions play an important role in many molecular recognition processes. An exquisite combination of multiple factors favors the interaction of the receptor with one specific type of sugar, whereas others are excluded. Stacking CH-aromatic interactions within the binding site provide a relevant contribution to the stabilization of the resulting sugar-protein complex. Being experimentally difficult to detect and analyze, the key CH-π interaction features have been very often dissected using a variety of techniques and simple model systems. In the present work, diffusion NMR spectroscopy has been employed to separate the components of sugar mixtures in different solvents on the basis of their differential ability to interact through CH-π interactions with one particular aromatic cosolute in solution. The experimental data show that the properties of the solvent did also influence the diffusion behavior of the sugars present in the mixture, inhibiting or improving their separation. Overall, the results showed that, for the considered monosaccharide derivatives, their diffusion coefficient values and, consequently, their apparent molecular sizes and/or shapes depend on the balance between solute/cosolute as well as solute/solvent interactions. Thus, in certain media and in the presence of the aromatic cosolute, the studied saccharides that are more suited to display CH-π interactions exhibited a lower diffusion coefficient than the noncomplexing sugars in the mixture. However, when dissolved in another medium, the interaction with the solvent strongly competes with that of the aromatic cosolute.
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Affiliation(s)
- Linda Jütten
- Department
für Chemie, NMR-Abteilung, Universität
zu Köln, Greinstr.
4, 50939 Köln, Germany
| | - Karla Ramírez-Gualito
- Centro
de Nanociencias y Micro y Nanotecnología, Instituto Politécnico Nacional, Avenida Luis Enrique Erro S/N, Unidad Profesional
Adolfo López Mateos, Zacatenco, C.P. 07738 Ciudad de México, México
| | - Andreas Weilhard
- Department
für Chemie, NMR-Abteilung, Universität
zu Köln, Greinstr.
4, 50939 Köln, Germany
| | - Benjamin Albrecht
- Department
für Chemie, NMR-Abteilung, Universität
zu Köln, Greinstr.
4, 50939 Köln, Germany
| | - Gabriel Cuevas
- Instituto
de Química, Universidad Nacional Autónoma de México,
Circuito Exterior, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510 Ciudad de México, México
| | | | - Jesús Jiménez-Barbero
- Centro
de Investigaciones Biológicas (CIB-CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
- CIC
bioGUNE, Science and
Technology Park bld 801 A, 48160 Derio, Spain
- Basque Foundation
for Science, Ikerbasque, Maria Diaz de Haro 3, 48013 Bilbao, Spain
- Department
of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, 48940 Leioa, Spain
| | - Nils E. Schlörer
- Department
für Chemie, NMR-Abteilung, Universität
zu Köln, Greinstr.
4, 50939 Köln, Germany
| | - Dolores Diaz
- Department
für Chemie, NMR-Abteilung, Universität
zu Köln, Greinstr.
4, 50939 Köln, Germany
- Centro
de Investigaciones Biológicas (CIB-CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain
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9
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Reile I, Aspers RLEG, Feiters MC, Rutjes FPJT, Tessari M. Resolving DOSY spectra of isomers by methanol-d 4 solvent effects. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:759-762. [PMID: 28219117 DOI: 10.1002/mrc.4587] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/17/2017] [Accepted: 01/22/2017] [Indexed: 06/06/2023]
Affiliation(s)
- Indrek Reile
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6526AJ, The Netherlands
| | - Ruud L E G Aspers
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6526AJ, The Netherlands
| | - Martin C Feiters
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6526AJ, The Netherlands
| | - Floris P J T Rutjes
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6526AJ, The Netherlands
| | - Marco Tessari
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6526AJ, The Netherlands
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10
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Lameiras P, Patis S, Jakhlal J, Castex S, Clivio P, Nuzillard JM. Small Molecule Mixture Analysis by Heteronuclear NMR under Spin Diffusion Conditions in Viscous DMSO-Water Solvent. Chemistry 2017; 23:4923-4928. [DOI: 10.1002/chem.201700636] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Pedro Lameiras
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
| | - Solène Patis
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
| | - Jouda Jakhlal
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
| | - Stéphanie Castex
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
| | - Pascale Clivio
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims, CNRS UMR 7312, SFR CAP-Santé BP 1039; 51687 Reims Cedex 02 France
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11
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Diez-Castellnou M, Salvia MV, Springhetti S, Rastrelli F, Mancin F. Nanoparticle-Assisted Affinity NMR Spectroscopy: High Sensitivity Detection and Identification of Organic Molecules. Chemistry 2016; 22:16957-16963. [DOI: 10.1002/chem.201603578] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Marta Diez-Castellnou
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Marie-Virginie Salvia
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
- Laboratoire d'Excellence “CORAIL”; Université de Perpignan; 58 Avenue Paul Alduy 66860 Perpignan Cedex France
| | - Sara Springhetti
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
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12
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Hoffman RE, Darmon E, Aserin A, Garti N. Design and characterization of selected microemulsions as media for NMR chromatography. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Yang Y, Wu R, Huang S, Bai Z. Silica sol assisted chromatographic NMR spectroscopy for resolution of trans- and cis-isomers. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2016; 265:210-214. [PMID: 26942864 DOI: 10.1016/j.jmr.2016.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 02/19/2016] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Chromatographic NMR spectroscopy can separate the mixtures of species with significantly different molecular size, but generally fails for isomeric species. Herein, we reported the resolution of trans- and cis-isomers and their structural analogue, which are different in molecular shapes, but similar in mass, were greatly enhanced in the presence of silica sol. The mixtures of maleic acid, fumaric acid and succinic acid, and the mixtures of trans- and cis-1,2-cyclohexanedicarboxylic acids, were distinguished by virtue of their different degrees of interaction with silica sol. Moreover, we found mixed solvents could improve the spectral resolution of DOSY spectra of mixtures.
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Affiliation(s)
- Ying Yang
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, 266101 Qingdao, China
| | - Rui Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, 430073 Wuhan, China
| | - Shaohua Huang
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, 266101 Qingdao, China.
| | - Zhengwu Bai
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, 430073 Wuhan, China
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14
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Lameiras P, Nuzillard JM. Highly Viscous Binary Solvents: DMSO-d6/Glycerol and DMSO-d6/Glycerol-d8 for Polar and Apolar Mixture Analysis by NMR. Anal Chem 2016; 88:4508-15. [DOI: 10.1021/acs.analchem.6b00481] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Pedro Lameiras
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire
de Reims, CNRS UMR 7312, SFR CAP-Santé, BP 1039, 51687 Reims Cedex 02, France
| | - Jean-Marc Nuzillard
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire
de Reims, CNRS UMR 7312, SFR CAP-Santé, BP 1039, 51687 Reims Cedex 02, France
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15
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Abstract
Matrix-assisted diffusion-ordered NMR spectroscopy has the potential to transform mixture analysis by DOSY NMR.
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Affiliation(s)
- Robert Evans
- Chemical Engineering and Applied Chemistry
- Aston University
- Birmingham
- UK
| | - Iain J. Day
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ
- UK
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16
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Chandran J, Shintu L, Caldarelli S. Molecular signal suppression by in situ microextraction in nuclear magnetic resonance spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:694-698. [PMID: 25103092 DOI: 10.1002/mrc.4120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/20/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
The detailed characterization of complex mixtures by NMR is often hampered by the presence of signals from uninformative compounds, the resonances of which overlap with those of the molecules of interest. We provide here a proof of principle for an approach to NMR signal suppression in complex samples using Molecularly Imprinted Polymers (MIPS). Addition of a few milligrams of polymer to a solution traps the target molecule in typical micromolar to millimolar concentration, thus achieving in situ signal suppression, without altering any other spectral features. This method minimized any manipulation or perturbation of the spectrum and was applied to a complex mixture of known compounds and to a plant extract, in both cases spiked with a compound (bisphenol A), which was subsequently removed by selective binding to a complementary MIP. What is described in this report is comparable with microextraction and may in due course be applied to a large number of analytical challenges.
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Affiliation(s)
- Jima Chandran
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France; Research Group Biosynthesis/NMR Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, D-07745, Jena, Germany
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17
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Huang S, Gao J, Wu R, Li S, Bai Z. Polydimethylsiloxane: a general matrix for high-performance chromatographic NMR spectroscopy. Angew Chem Int Ed Engl 2014; 53:11592-5. [PMID: 25196825 DOI: 10.1002/anie.201406967] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Indexed: 11/07/2022]
Abstract
The detection and structural characterization of the components of a mixture is a challenging task. Therefore, the development of a facile and general method that enables both the separation and the structural characterization of the components is desired. Diffusion-ordered NMR spectroscopy (DOSY) with the aid of a matrix is a promising tool for this purpose. However, because the currently existing matrices only separate limited components, the application of the DOSY technique is restricted. Herein we introduce a new versatile matrix, poly(dimethylsiloxane), which can fully separate many mixtures of different structural types by liquid-state NMR spectroscopy. With poly(dimethylsiloxane), liquid-state chromatographic NMR spectroscopy could become a general approach for the structural elucidation of mixtures of compounds.
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Affiliation(s)
- Shaohua Huang
- Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101 (China).
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18
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Huang S, Gao J, Wu R, Li S, Bai Z. Polydimethylsiloxane: A General Matrix for High-Performance Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406967] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Huang S, Wu R, Bai Z, Yang Y, Li S, Dou X. Evaluation of the separation performance of polyvinylpyrrolidone as a virtual stationary phase for chromatographic NMR. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:486-490. [PMID: 24975777 DOI: 10.1002/mrc.4102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 06/06/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
Polyvinylpyrrolidone (PVP) was used as a virtual stationary phase to separate p-xylene, benzyl alcohol, and p-methylphenol by the chromatographic NMR technique. The effects of concentration and weight-average molecular weight (Mw) of PVP, solvent viscosity, solvent polarity, and sample temperature on the resolution of these components were investigated. It was found that both higher PVP concentration and higher PVP Mw caused the increase of diffusion resolution for the three components. Moreover, the diffusion resolution did not change at viscosity-higher solvents. Moreover, the three components showed different resolution at different solvents. As temperature increased, the diffusion resolution between p-xylene and benzyl alcohol gradually increased, and the one between p-xylene and p-methylphenol slightly increased from 278 to 298 K and then decreased above 298 K. It was also found that the polarity of the analytes played an important role for the separation by affecting the diffusion coefficient.
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Affiliation(s)
- Shaohua Huang
- Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
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High-resolution magic angle spinning description of the interaction states and their kinetics among basic solutes and functionalized silica materials. J Chromatogr A 2013; 1321:48-55. [DOI: 10.1016/j.chroma.2013.10.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 10/11/2013] [Accepted: 10/15/2013] [Indexed: 11/21/2022]
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21
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013; 52:3255-8. [DOI: 10.1002/anie.201209616] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 11/07/2022]
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23
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Carrara C, Lopez C, Caldarelli S. Chromatographic-nuclear magnetic resonance can provide a prediction of high-pressure liquid chromatography shape selectivity tests. J Chromatogr A 2012; 1257:204-7. [DOI: 10.1016/j.chroma.2012.07.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/09/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
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24
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Stötzel S, Schurink M, Wienk H, Siebler U, Burg-Roderfeld M, Eckert T, Kulik B, Wechselberger R, Sewing J, Steinmeyer J, Oesser S, Boelens R, Siebert HC. Molecular Organization of Various Collagen Fragments as Revealed by Atomic Force Microscopy and Diffusion-Ordered NMR Spectroscopy. Chemphyschem 2012; 13:3117-25. [DOI: 10.1002/cphc.201200284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Indexed: 12/22/2022]
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25
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Hoffman RE, Aserin A, Garti N. New insights into the microemulsion-based chromatographic NMR resolution mechanism and its application to fragrance/flavor molecules. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2012; 220:18-25. [PMID: 22683577 DOI: 10.1016/j.jmr.2012.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 04/30/2012] [Accepted: 05/02/2012] [Indexed: 06/01/2023]
Abstract
The NMR chromatography method is applied to a class of molecules with similar physical properties. We correlate the separation ability of microemulsions to the physical properties of the analyzed molecules. Flavor and aroma compounds are very widespread. Compositional analysis is in many cases tedious. Any new method of analysis is always useful and challenging. Here we show a new application to a class of fragrance molecules, with only a moderate variation in their chemical and physical characteristics. Up to 11 selected compounds in one mixture are resolved in one spectrum by NMR chromatography, despite the similarity of the compounds. The differences between O/W and W/O microemulsions and their resolution mechanism as applied to fragrance molecules are explained in terms of hydrophilicity and lipophilicity and effective critical packing parameters of the microemulsions. The observed diffusion rates are shown to correlate with solvation parameters. These results can be used to estimate the diffusion rates of molecules to be separated, allowing selection of the microemulsion or NMR chromatography solvent appropriate for each specific application.
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Affiliation(s)
- Roy E Hoffman
- Institute of Chemistry, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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26
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27
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Shukla M, Dorai K. Resolving overlaps in diffusion encoded spectra using band-selective pulses in a 3D BEST-DOSY experiment. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 213:69-75. [PMID: 21937251 DOI: 10.1016/j.jmr.2011.08.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 08/10/2011] [Accepted: 08/30/2011] [Indexed: 05/31/2023]
Abstract
A novel diffusion-edited 3D NMR experiment that incorporates a BEST-HMQC pulse sequence in its implementation is presented. Heteronuclear 3D DOSY NMR experiments are useful in elucidating the diffusion coefficients of individual constituents of a mixture, especially in cases where the proton NMR 2D DOSY spectra show considerable overlap. The present 3D BEST-DOSY pulse sequence provides a more sensitive and less time-consuming alternative to standard 3D HMQC-DOSY experiments. Cleanly separated subspectra of individual mixture components are obtained, leading to the determination of diffusion coefficients with better accuracy. The feasibility of the technique is demonstrated on a mixture of amino acids, on a mixture of small molecules with similar diffusion coefficients, and on a complex mixture with large dynamic range (commercial gasoline). The implications of using adiabatic decoupling schemes and band-selective shaped pulses for selective BEST-DOSY experiments on proteins are also discussed.
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Affiliation(s)
- Matsyendranath Shukla
- Department of Physics, Indian Institute of Science Education & Research (IISER) Mohali, Chandigarh 160 019, India.
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28
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Lameiras P, Boudesocque L, Mouloungui Z, Renault JH, Wieruszeski JM, Lippens G, Nuzillard JM. Glycerol and glycerol carbonate as ultraviscous solvents for mixture analysis by NMR. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 212:161-168. [PMID: 21802324 DOI: 10.1016/j.jmr.2011.06.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 06/21/2011] [Accepted: 06/23/2011] [Indexed: 05/31/2023]
Abstract
NMR of weakly polar analytes in an apolar ultraviscous solvent has recently been proposed for mixture analysis as a pertinent alternative to the DOSY experiment. The present article reports the first use of glycerol and glycerol carbonate as polar solvents for the NMR analysis of a model mixture of dipeptides. This work demonstrates the high potentiality of these solvents for the analysis of mixtures made of polar and potentially bioactive compounds. Medium-sized molecules slowly reorient in glycerol and glycerol carbonate under particular temperature conditions, so that solute resonances may show spin diffusion in NOESY spectra, thus opening the way to mixture analysis. Glycerol and glycerol carbonate have turned out to be ultraviscous solvents of choice for the individualization of four structurally close mixed dipeptides: Leu-Val, Leu-Tyr, Gly-Tyr and Ala-Tyr by means of 1D and 2D NOESY experiments. Selective sample excitation and signal detection were implemented to eliminate the intense proton signals of the non-deuterated solvents. Moreover, the recording of a multiplet selective 2D NOESY-TOCSY has shown that the analytical power of NMR in highly viscous solvents is not limited to the extraction of mixture component 1D subspectra but may also yield some supplementary information about atom connectivity within components.
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Affiliation(s)
- Pedro Lameiras
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, CNRS UMR 6229, IFR 53 Biomolécules, BP 1039, 51687 Reims Cedex 02, France
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Idahosa KC, Lee YC, Nyoni D, Kaye PT, Caira MR. Baylis–Hillman-derived N,N′-disubstituted piperazines: structural and preliminary computational studies. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kagan G, Li W, Li D, Hopson R, Williard PG. Characterization of dimeric chiral lithium amide structures derived from N-isopropyl-O- triisopropylsilyl valinol. J Am Chem Soc 2011; 133:6596-602. [PMID: 21486016 DOI: 10.1021/ja109041z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The dimeric structure is characterized for a chiral amide base complex consisting of an (S)-N-isopropyl-O-triisopropylsilyl valinol ligand and lithium. The complex is characterized by a variety of NMR techniques, including multinuclear one- and two-dimensional NMR experiments and diffusion-ordered NMR spectroscopy (DOSY) as well as diffusion coefficient-formula weight (D-fw) correlation analyses. Spartan calculations are presented which support the structural assignment. This structural characterization leads to an explanation of the behavior and the reactivity of these complexes in solution.
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Affiliation(s)
- Gerald Kagan
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA
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Pemberton C, Hoffman RE, Aserin A, Garti N. NMR chromatography using microemulsion systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4497-4504. [PMID: 21405070 DOI: 10.1021/la200232b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
NMR spectroscopy is an excellent tool for structural analysis of pure compounds. However, for mixtures, it performs poorly because of overlapping signals. Diffusion ordered NMR spectroscopy (DOSY) can be used to separate the spectra of compounds with widely differing molecular weights, but the separation is usually insufficient. NMR "chromatographic" methods have been developed to increase the diffusion separation but these usually introduced solids into the NMR sample that reduce resolution. Using nanostructured dispersed media, such as microemulsions, eliminates the need for suspensions of solids and brings NMR chromatography into the mainstream of NMR analytical techniques. DOSY was used in this study to resolve spectra of mixtures with no increase in line-width as compared to regular solutions. Components of a mixture are differentially dissolved into the separate phases of the microemulsions. Several examples of previously reported microemulsions and those specifically developed for this purpose were used here. These include a fully dilutable microemulsion, a fluorinated microemulsion, and a fully deuterated microemulsion. Log(diffusion) difference enhancements of up to 1.7 orders of magnitude were observed for compounds that have similar diffusion rates in conventional solvents. Examples of commercial pharmaceutical drugs were also analyzed via this new technique, and the spectra of up to six components were resolved from one sample.
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Affiliation(s)
- Chava Pemberton
- The Ratner Family Chair of Chemistry, Casali Institute of Applied Chemistry, Institute of Chemistry, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Pemberton C, Hoffman R, Aserin A, Garti N. New insights into silica-based NMR "chromatography". JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 208:262-269. [PMID: 21195647 DOI: 10.1016/j.jmr.2010.11.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 10/06/2010] [Accepted: 11/18/2010] [Indexed: 05/30/2023]
Abstract
Silica is used as an important component for NMR "chromatography". In this study the effect of the binding strength to silica of a variety of compounds on their diffusion rate is measured for the first time. Over two orders of magnitude of diffusion difference enhancement was obtained in the presence of silica for some compounds. An explanation of the enhancement is given that also allows one to predict the "chromatographic" behavior of new compounds or mixtures. The binding strength is divided into categories of weakly bound, singly bound and multiply bound. Carboxylates, sulfonates, and diols are found to be particularly strongly bound and to diffuse up to 2½ orders of magnitude more slowly in the presence of silica.
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Affiliation(s)
- Chava Pemberton
- Casali Institute of Applied Chemistry, The Institute of Chemistry, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Friebolin V, Marten S, Albert K. Characterization of binding affinities in a chromatographic system by suspended state HR/MAS NMR spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:111-116. [PMID: 19950216 DOI: 10.1002/mrc.2551] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the current work a racemate of (R)- and (S)-benzylmandelate was separated with a stereoselective polysaccharide-based chiral stationary phase by HPLC. To elucidate the occurring chiral molecular recognition processes in the heterogeneous system used, NMR spectroscopy was chosen under high resolution/magic angle spinning (HR/MAS) NMR conditions in the suspended state. Therefore, and as a proof of concept, a combination of several NMR methods such as spin-lattice relaxation time (T(1)) measurements (T(1)), the saturation transfer difference, and the 2D experiment of the transferred nuclear overhauser enhancement spectroscopy technique were applied. With HR/MAS NMR it is feasible to combine NMR and chromatography to achieve further insights into the separation process.
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Affiliation(s)
- Volker Friebolin
- University of Tuebingen, Institute of Organic Chemistry, Auf der Morgenstelle 18, 72076 Tuebingen, Germany
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