1
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Tadiello L, Halse ME, Beweries T. Improved on-line benchtop 31P NMR reaction monitoring via Multi-Resonance SHARPER. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 39042022 DOI: 10.1039/d4ay00948g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
On-line reaction monitoring of hydrogenation reactions featuring oxygen-sensitive organometallic complexes is done via a 31P benchtop NMR spectrometer using the Multi-Resonance Sensitive Homogeneous And Resolved PEaks in Real time (MR-SHARPER) sequence. Signal enhancement generated by MR-SHARPER enables monitoring of reactivity on the order of minutes that could not be followed with traditional 31P{1H} NMR detection.
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Affiliation(s)
- Laura Tadiello
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
- Department of Chemistry, University of York, YO10 5DD, York, UK.
| | - Meghan E Halse
- Department of Chemistry, University of York, YO10 5DD, York, UK.
| | - Torsten Beweries
- Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Str. 29a, 18059 Rostock, Germany.
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2
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Pellizzari J, Soong R, Downey K, Biswas RG, Kock FC, Steiner K, Goerling B, Haber A, Decker V, Busse F, Simpson M, Simpson A. Slice through the water-Exploring the fundamental challenge of water suppression for benchtop NMR systems. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2024; 62:463-473. [PMID: 38282484 DOI: 10.1002/mrc.5431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 12/01/2023] [Accepted: 01/02/2024] [Indexed: 01/30/2024]
Abstract
Benchtop NMR provides improved accessibility in terms of cost, space, and technical expertise. In turn, this encourages new users into the field of NMR spectroscopy. Unfortunately, many interesting samples in education and research, from beer to whole blood, contain significant amounts of water that require suppression in 1H NMR in order to recover sample information. However, due to the significant reduction in chemical shift dispersion in benchtop NMR systems, the sample signals are much closer to the water resonance compared to those in a corresponding high-field NMR spectrum. Therefore, simply translating solvent suppression experiments intended for high-field NMR instruments to benchtop NMR systems without careful consideration can be problematic. In this study, the effectiveness of several popular water suppression schemes was evaluated for benchtop NMR applications. Emphasis is placed on pulse sequences with no, or few, adjustable parameters making them easy to implement. These fall into two main categories: (1) those based on Pre-SAT including Pre-SAT, PURGE, NOESY-PR, and g-NOESY-PR and (2) those based on binomial inversion including JRS and W5-WATERGATE. Among these schemes, solvent suppression sequences based on Pre-SAT offer a general approach for easy solvent suppression for samples with higher analyte concentrations (sucrose standard and Redbull™). However, for human urine, binomial-like sequences were required. In summary, it is demonstrated that highly efficient water suppression approaches can be implemented on benchtop NMR systems in a simple manner, despite the limited spectral dispersion, further illustrating the potential for widespread implementation of these approaches in education and research.
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Affiliation(s)
| | - Ronald Soong
- University of Toronto Scarborough, Toronto, Ontario, Canada
| | - Katelyn Downey
- University of Toronto Scarborough, Toronto, Ontario, Canada
| | | | - Flavio C Kock
- University of Toronto Scarborough, Toronto, Ontario, Canada
| | | | | | | | | | | | - Myrna Simpson
- University of Toronto Scarborough, Toronto, Ontario, Canada
| | - Andre Simpson
- University of Toronto Scarborough, Toronto, Ontario, Canada
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3
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Phuong J, Mross S, Bellaire D, Hasse H, Münnemann K. Determination of self-diffusion coefficients in mixtures with benchtop 13C NMR spectroscopy via polarization transfer. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2024; 62:386-397. [PMID: 38014888 DOI: 10.1002/mrc.5412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/18/2023] [Accepted: 10/25/2023] [Indexed: 11/29/2023]
Abstract
Nuclear magnetic resonance (NMR) is an established method to determine self-diffusion coefficients in liquids with high precision. The development of benchtop NMR spectrometers makes the method accessible to a wider community. In most cases, 1H NMR spectroscopy is used to determine self-diffusion coefficients due to its high sensitivity. However, especially when using benchtop NMR spectrometers for the investigation of complex mixtures, the signals in 1H NMR spectra can overlap, hindering the precise determination of self-diffusion coefficients. In 13C NMR spectroscopy, the signals of different compounds are generally well resolved. However, the sensitivity of 13C NMR is significantly lower than that of 1H NMR spectroscopy leading to very long measurement times, which makes diffusion coefficient measurements based on 13C NMR practically infeasible with benchtop NMR spectrometers. To circumvent this problem, we have combined two known pulse sequences, one for polarization transfer from 1H to the 13C nuclei (PENDANT) and one for the measurement of diffusion coefficients (PFG). The new method (PENPFG) was used to measure the self-diffusion coefficients of three pure solvents (acetonitrile, ethanol and 1-propanol) as well as in all their binary mixtures and the ternary mixture at various compositions. For comparison, also measurements of the same systems were carried out with a standard PFG-NMR routine on a high-field NMR instrument. The results are in good agreement and show that PENPFG is a useful tool for the measurement of the absolute value of the self-diffusion coefficients in complex liquid mixtures with benchtop NMR spectrometers.
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Affiliation(s)
- Johnnie Phuong
- Laboratory of Engineering Thermodynamics (LTD), RPTU Kaiserslautern, Kaiserslautern, Germany
| | - Sarah Mross
- Laboratory of Engineering Thermodynamics (LTD), RPTU Kaiserslautern, Kaiserslautern, Germany
| | - Daniel Bellaire
- Laboratory of Engineering Thermodynamics (LTD), RPTU Kaiserslautern, Kaiserslautern, Germany
| | - Hans Hasse
- Laboratory of Engineering Thermodynamics (LTD), RPTU Kaiserslautern, Kaiserslautern, Germany
| | - Kerstin Münnemann
- Laboratory of Engineering Thermodynamics (LTD), RPTU Kaiserslautern, Kaiserslautern, Germany
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4
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Tooley O, Pointer W, Radmall R, Hall M, Beyer V, Stakem K, Swift T, Town J, Junkers T, Wilson P, Lester D, Haddleton D. MaDDOSY (Mass Determination Diffusion Ordered Spectroscopy) using an 80 MHz Bench Top NMR for the Rapid Determination of Polymer and Macromolecular Molecular Weight. Macromol Rapid Commun 2024; 45:e2300692. [PMID: 38288674 DOI: 10.1002/marc.202300692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/12/2024] [Indexed: 02/13/2024]
Abstract
Measurement of molecular weight is an integral part of macromolecular and polymer characterization which usually has limitations. Herein, this article presents the use of a bench-top 80 MHz Nuclear Magnetic Resonance (NMR) spectrometer for diffusion-ordered spectroscopy as a practical and rapid approach for the determination of molecular weight/size using a novel solvent and polymer-independent universal calibration.
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Affiliation(s)
- Owen Tooley
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - William Pointer
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Rowan Radmall
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Mia Hall
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Valentin Beyer
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Kieran Stakem
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Thomas Swift
- Department of Chemistry, University of Bradford, West Yorkshire, Bradford, BD7 1DP, UK
| | - James Town
- Polymer Characterization RTP, University of Warwick, Coventry, CV4 7AL, UK
| | - Tanja Junkers
- School of Chemistry, Monash University, Box 23 Victoria, Clayton, VIC, 3800, Australia
| | - Paul Wilson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Daniel Lester
- Polymer Characterization RTP, University of Warwick, Coventry, CV4 7AL, UK
| | - David Haddleton
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
- Polymer Characterization RTP, University of Warwick, Coventry, CV4 7AL, UK
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5
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Parker AJ, Dey A, Usman Qureshi M, Steiner JM, Blanchard JW, Scheuer J, Tomek N, Knecht S, Josten F, Müller C, Hautle P, Schwartz I, Giraudeau P, Eichhorn TR, Dumez JN. Solution-State 2D NMR Spectroscopy of Mixtures HyperpolarizedUsing Optically Polarized Crystals. Angew Chem Int Ed Engl 2023; 62:e202312302. [PMID: 37837321 DOI: 10.1002/anie.202312302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/30/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
The HYPNOESYS method (Hyperpolarized NOE System), which relies on the dissolution of optically polarized crystals, has recently emerged as a promising approach to enhance the sensitivity of NMR spectroscopy in the solution state. However, HYPNOESYS is a single-shot method that is not generally compatible with multidimensional NMR. Here we show that 2D NMR spectra can be obtained from HYPNOESYS-polarized samples, using single-scan acquisition methods. The approach is illustrated with a mixture of terpene molecules and a benchtop NMR spectrometer, paving the way to a sensitive, information-rich and affordable analytical method.
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Affiliation(s)
- Anna J Parker
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Arnab Dey
- Nantes Université, CNRS, CEISAM UMR6230, 44000, Nantes, France
| | | | - Jakob M Steiner
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
- Paul Scherrer Insititute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - John W Blanchard
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Jochen Scheuer
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Nikolas Tomek
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Stephan Knecht
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Felix Josten
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Christoph Müller
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | - Patrick Hautle
- Paul Scherrer Insititute, Forschungsstrasse 111, 5232, Villigen PSI, Switzerland
| | - Ilai Schwartz
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
| | | | - Tim R Eichhorn
- NVision Imaging Technologies GmbH, Wolfgang-Paul-Strasse 2, 89081, Ulm, Germany
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6
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Galvan D, de Aguiar LM, Bona E, Marini F, Killner MHM. Successful combination of benchtop nuclear magnetic resonance spectroscopy and chemometric tools: A review. Anal Chim Acta 2023; 1273:341495. [PMID: 37423658 DOI: 10.1016/j.aca.2023.341495] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/20/2023] [Accepted: 06/05/2023] [Indexed: 07/11/2023]
Abstract
Low-field nuclear magnetic resonance (NMR) has three general modalities: spectroscopy, imaging, and relaxometry. In the last twelve years, the modality of spectroscopy, also known as benchtop NMR, compact NMR, or just low-field NMR, has undergone instrumental development due to new permanent magnetic materials and design. As a result, benchtop NMR has emerged as a powerful analytical tool for use in process analytical control (PAC). Nevertheless, the successful application of NMR devices as an analytical tool in several areas is intrinsically linked to its coupling with different chemometric methods. This review focuses on the evolution of benchtop NMR and chemometrics in chemical analysis, including applications in fuels, foods, pharmaceuticals, biochemicals, drugs, metabolomics, and polymers. The review also presents different low-resolution NMR methods for spectrum acquisition and chemometric techniques for calibration, classification, discrimination, data fusion, calibration transfer, multi-block and multi-way.
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Affiliation(s)
- Diego Galvan
- Chemistry Institute, Universidade Federal de Mato Grosso do Sul (UFMS), 79070-900, Campo Grande, MS, Brazil; Chemistry Departament, Universidade Estadual de Londrina (UEL), 86.057-970, Londrina, PR, Brazil.
| | | | - Evandro Bona
- Post-Graduation Program of Food Technology (PPGTA), Universidade Tecnológica Federal do Paraná (UTFPR), Campus Campo Mourão, 87301-899, Campo Mourão, PR, Brazil; Post-Graduation Program of Chemistry (PPGQ), Universidade Tecnológica Federal do Paraná (UTFPR), Campus Curitiba, 80230-901, Curitiba, PR, Brazil
| | - Federico Marini
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Mário Henrique M Killner
- Chemistry Departament, Universidade Estadual de Londrina (UEL), 86.057-970, Londrina, PR, Brazil
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7
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Alonso-Moreno P, Rodriguez I, Izquierdo-Garcia JL. Benchtop NMR-Based Metabolomics: First Steps for Biomedical Application. Metabolites 2023; 13:metabo13050614. [PMID: 37233655 DOI: 10.3390/metabo13050614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Nuclear magnetic resonance (NMR)-based metabolomics is a valuable tool for identifying biomarkers and understanding the underlying metabolic changes associated with various diseases. However, the translation of metabolomics analysis to clinical practice has been limited by the high cost and large size of traditional high-resolution NMR spectrometers. Benchtop NMR, a compact and low-cost alternative, offers the potential to overcome these limitations and facilitate the wider use of NMR-based metabolomics in clinical settings. This review summarizes the current state of benchtop NMR for clinical applications where benchtop NMR has demonstrated the ability to reproducibly detect changes in metabolite levels associated with diseases such as type 2 diabetes and tuberculosis. Benchtop NMR has been used to identify metabolic biomarkers in a range of biofluids, including urine, blood plasma and saliva. However, further research is needed to optimize the use of benchtop NMR for clinical applications and to identify additional biomarkers that can be used to monitor and manage a range of diseases. Overall, benchtop NMR has the potential to revolutionize the way metabolomics is used in clinical practice, providing a more accessible and cost-effective way to study metabolism and identify biomarkers for disease diagnosis, prognosis, and treatment.
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Affiliation(s)
- Pilar Alonso-Moreno
- NMR and Imaging in Biomedicine Group, Instituto Pluridisciplinar, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Ignacio Rodriguez
- NMR and Imaging in Biomedicine Group, Instituto Pluridisciplinar, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Department of Chemistry in Pharmaceutical Sciences, Pharmacy School, Universidad Complutense de Madrid, 28040 Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Jose Luis Izquierdo-Garcia
- NMR and Imaging in Biomedicine Group, Instituto Pluridisciplinar, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Department of Chemistry in Pharmaceutical Sciences, Pharmacy School, Universidad Complutense de Madrid, 28040 Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, 28029 Madrid, Spain
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8
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Draper SL, McCarney ER. Benchtop nuclear magnetic resonance spectroscopy in forensic chemistry. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2023; 61:106-129. [PMID: 34286862 DOI: 10.1002/mrc.5197] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/21/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is a powerful technique well known for its ability to elucidate structures and analyse mixtures and its quantitative nature. However, the cost and maintenance of high field NMR instruments prevent its widespread use by forensic chemists. The introduction of benchtop NMR spectrometers to the market operating at 40-80 MHz have a small footprint, are easy to use and cost much less than high field instruments, which makes them well suited to meet the needs of forensic chemists. These modern low field spectrometers are often capable of running multiple nuclei including 1 H, 13 C, 19 F and 31 P; 2D NMR experiments and advanced experiments such as solvent suppression and diffusion-ordered spectroscopy (DOSY) are possible. This has resulted in a number of publications in the area of forensic chemistry using benchtop NMR spectroscopy in the last 5 years that was previously missing from the literature. This mini review summarises this research including examples of benchtop NMR being used to identify and quantify compounds relevant to forensics and some advanced methods that may be used to overcome some of the limitations of these instruments for forensic analysis. Further validation and automation are likely required for widespread uptake of benchtop NMR in industry; however, it has been demonstrated as a useful complement to other analytical techniques commonplace of forensic laboratories.
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Affiliation(s)
- Sarah L Draper
- Ferrier Research Institute, Victoria University of Wellington, Wellington, New Zealand
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9
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Steimers E, Matviychuk Y, Holland DJ, Hasse H, von Harbou E. Accurate measurements of self-diffusion coefficients with benchtop NMR using a QM model-based approach. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:1113-1130. [PMID: 35906502 DOI: 10.1002/mrc.5300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
The measurement of self-diffusion coefficients using pulsed-field gradient (PFG) nuclear magnetic resonance (NMR) spectroscopy is a well-established method. Recently, benchtop NMR spectrometers with gradient coils have also been used, which greatly simplify these measurements. However, a disadvantage of benchtop NMR spectrometers is the lower resolution of the acquired NMR signals compared to high-field NMR spectrometers, which requires sophisticated analysis methods. In this work, we use a recently developed quantum mechanical (QM) model-based approach for the estimation of self-diffusion coefficients from complex benchtop NMR data. With the knowledge of the species present in the mixture, signatures for each species are created and adjusted to the measured NMR signal. With this model-based approach, the self-diffusion coefficients of all species in the mixtures were estimated with a discrepancy of less than 2 % compared to self-diffusion coefficients estimated from high-field NMR data sets of the same mixtures. These results suggest benchtop NMR is a reliable tool for quantitative analysis of self-diffusion coefficients, even in complex mixtures.
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Affiliation(s)
- Ellen Steimers
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße 44, Kaiserslautern, 67663, Germany
| | - Yevgen Matviychuk
- Department of Chemical and Process Engineering, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
| | - Daniel J Holland
- Department of Chemical and Process Engineering, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
| | - Hans Hasse
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße 44, Kaiserslautern, 67663, Germany
| | - Erik von Harbou
- Laboratory of Reaction and Fluid Process Engineering, Technische Universität Kaiserslautern, Erwin-Schrödinger-Straße 44, Kaiserslautern, 67663, Germany
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10
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Tadiello L, Drexler HJ, Beweries T. Low-Field Flow 31P NMR Spectroscopy for Organometallic Chemistry: On-Line Analysis of Highly Air-Sensitive Rhodium Diphosphine Complexes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00301] [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]
Affiliation(s)
- Laura Tadiello
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Hans-Joachim Drexler
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Torsten Beweries
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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11
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Lhoste C, Lorandel B, Praud C, Marchand A, Mishra R, Dey A, Bernard A, Dumez JN, Giraudeau P. Ultrafast 2D NMR for the analysis of complex mixtures. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2022; 130-131:1-46. [PMID: 36113916 DOI: 10.1016/j.pnmrs.2022.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 06/15/2023]
Abstract
2D NMR is extensively used in many different fields, and its potential for the study of complex biochemical or chemical mixtures has been widely demonstrated. 2D NMR gives the ability to resolve peaks that overlap in 1D spectra, while providing both structural and quantitative information. However, complex mixtures are often analysed in situations where the data acquisition time is a crucial limitation, due to an ongoing chemical reaction or a moving sample from a hyphenated technique, or to the high-throughput requirement associated with large sample collections. Among the great diversity of available fast 2D methods, ultrafast (or single-scan) 2D NMR is probably the most general and versatile approach for complex mixture analysis. Indeed, ultrafast NMR has undergone an impressive number of methodological developments that have helped turn it into an efficient analytical tool, and numerous applications to the analysis of mixtures have been reported. This review first summarizes the main concepts, features and practical limitations of ultrafast 2D NMR, as well as the methodological developments that improved its analytical potential. Then, a detailed description of the main applications of ultrafast 2D NMR to mixture analysis is given. The two major application fields of ultrafast 2D NMR are first covered, i.e., reaction/process monitoring and metabolomics. Then, the potential of ultrafast 2D NMR for the analysis of hyperpolarized mixtures is described, as well as recent developments in oriented media. This review focuses on high-resolution liquid-state 2D experiments (including benchtop NMR) that include at least one spectroscopic dimension (i.e., 2D spectroscopy and DOSY) but does not cover in depth applications without spectral resolution and/or in inhomogeneous fields.
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Affiliation(s)
- Célia Lhoste
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
| | | | - Clément Praud
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
| | - Achille Marchand
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
| | - Rituraj Mishra
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
| | - Arnab Dey
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
| | - Aurélie Bernard
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes F-44000, France
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12
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Dickson CL, Peat G, Rossetto M, Halse ME, Uhrín D. SHARPER-enhanced benchtop NMR: improving SNR by removing couplings and approaching natural linewidths. Chem Commun (Camb) 2022; 58:5534-5537. [PMID: 35421881 DOI: 10.1039/d2cc01325h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present a signal enhancement strategy for benchtop NMR that produces SNR increases on the order of 10 to 30 fold by collapsing the target resonance into an extremely narrow singlet. Importantly, the resultant signal is amenable to quantitative interpretation and therefore can be applied to analytical applications such as reaction monitoring.
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Affiliation(s)
- Claire L Dickson
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
| | - George Peat
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
| | | | | | - Dušan Uhrín
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK.
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13
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Letertre MPM, Giraudeau P, de Tullio P. Nuclear Magnetic Resonance Spectroscopy in Clinical Metabolomics and Personalized Medicine: Current Challenges and Perspectives. Front Mol Biosci 2021; 8:698337. [PMID: 34616770 PMCID: PMC8488110 DOI: 10.3389/fmolb.2021.698337] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 08/30/2021] [Indexed: 12/12/2022] Open
Abstract
Personalized medicine is probably the most promising area being developed in modern medicine. This approach attempts to optimize the therapies and the patient care based on the individual patient characteristics. Its success highly depends on the way the characterization of the disease and its evolution, the patient’s classification, its follow-up and the treatment could be optimized. Thus, personalized medicine must combine innovative tools to measure, integrate and model data. Towards this goal, clinical metabolomics appears as ideally suited to obtain relevant information. Indeed, the metabolomics signature brings crucial insight to stratify patients according to their responses to a pathology and/or a treatment, to provide prognostic and diagnostic biomarkers, and to improve therapeutic outcomes. However, the translation of metabolomics from laboratory studies to clinical practice remains a subsequent challenge. Nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MS) are the two key platforms for the measurement of the metabolome. NMR has several advantages and features that are essential in clinical metabolomics. Indeed, NMR spectroscopy is inherently very robust, reproducible, unbiased, quantitative, informative at the structural molecular level, requires little sample preparation and reduced data processing. NMR is also well adapted to the measurement of large cohorts, to multi-sites and to longitudinal studies. This review focus on the potential of NMR in the context of clinical metabolomics and personalized medicine. Starting with the current status of NMR-based metabolomics at the clinical level and highlighting its strengths, weaknesses and challenges, this article also explores how, far from the initial “opposition” or “competition”, NMR and MS have been integrated and have demonstrated a great complementarity, in terms of sample classification and biomarker identification. Finally, a perspective discussion provides insight into the current methodological developments that could significantly raise NMR as a more resolutive, sensitive and accessible tool for clinical applications and point-of-care diagnosis. Thanks to these advances, NMR has a strong potential to join the other analytical tools currently used in clinical settings.
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Affiliation(s)
| | | | - Pascal de Tullio
- Metabolomics Group, Center for Interdisciplinary Research of Medicine (CIRM), Department of Pharmacy, Université de Liège, Liège, Belgique
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14
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Abstract
Benchtop nuclear magnetic resonance (NMR) spectroscopy uses small permanent magnets to generate magnetic fields and therefore offers the advantages of operational simplicity and reasonable cost, presenting a viable alternative to high-field NMR spectroscopy. In particular, the use of benchtop NMR spectroscopy for rapid in-field analysis, e.g., for quality control or forensic science purposes, has attracted considerable attention. As benchtop NMR spectrometers are sufficiently compact to be operated in a fume hood, they can be efficiently used for real-time reaction and process monitoring. This review introduces the recent applications of benchtop NMR spectroscopy in diverse fields, including food science, pharmaceuticals, process and reaction monitoring, metabolomics, and polymer materials.
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Chighine K, Léonce E, Boutin C, Desvaux H, Berthault P. 129Xe ultra-fast Z spectroscopy enables micromolar detection of biosensors on a 1 T benchtop spectrometer. MAGNETIC RESONANCE (GOTTINGEN, GERMANY) 2021; 2:409-420. [PMID: 37904767 PMCID: PMC10539730 DOI: 10.5194/mr-2-409-2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/31/2021] [Indexed: 11/01/2023]
Abstract
The availability of a benchtop nuclear magnetic resonance (NMR) spectrometer, of low cost and easily transportable, can allow detection of low quantities of biosensors, provided that hyperpolarized species are used. Here we show that the micromolar threshold can easily be reached by employing laser-polarized xenon and cage molecules reversibly hosting it. Indirect detection of caged xenon is made via chemical exchange, using ultra-fast Z spectroscopy based on spatio-temporal encoding. On this non-dedicated low-field spectrometer, several ideas are proposed to improve the signal.
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Affiliation(s)
- Kévin Chighine
- Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie, CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
| | - Estelle Léonce
- Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie, CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
| | - Céline Boutin
- Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie, CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
| | - Hervé Desvaux
- Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie, CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
| | - Patrick Berthault
- Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie, CEA, CNRS, Université Paris-Saclay, 91191, Gif-sur-Yvette, France
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