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Gomez MV, Baas S, Velders AH. Multinuclear 1D and 2D NMR with 19F-Photo-CIDNP hyperpolarization in a microfluidic chip with untuned microcoil. Nat Commun 2023; 14:3885. [PMID: 37391397 DOI: 10.1038/s41467-023-39537-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 06/14/2023] [Indexed: 07/02/2023] Open
Abstract
Nuclear Magnetic Resonance (NMR) spectroscopy is a most powerful molecular characterization and quantification technique, yet two major persistent factors limit its more wide-spread applications: poor sensitivity, and intricate complex and expensive hardware required for sophisticated experiments. Here we show NMR with a single planar-spiral microcoil in an untuned circuit with hyperpolarization option and capability to execute complex experiments addressing simultaneously up to three different nuclides. A microfluidic NMR-chip in which the 25 nL detection volume can be efficiently illuminated with laser-diode light enhances the sensitivity by orders of magnitude via photochemically induced dynamic nuclear polarization (photo-CIDNP), allowing rapid detection of samples in the lower picomole range (normalized limit of detection at 600 MHz, nLODf,600, of 0.01 nmol Hz1/2). The chip is equipped with a single planar microcoil operating in an untuned circuit that allows different Larmor frequencies to be addressed simultaneously, permitting advanced hetero-, di- and trinuclear, 1D and 2D NMR experiments. Here we show NMR chips with photo-CIDNP and broadband capabilities addressing two of the major limiting factors of NMR, by enhancing sensitivity as well as reducing cost and hardware complexity; the performance is compared to state-of-the-art instruments.
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Affiliation(s)
- M Victoria Gomez
- IRICA, Department of Inorganic, Organic and Biochemistry, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha (UCLM), Av. Camilo José Cela 10, 13071, Ciudad Real, Spain.
| | - Sander Baas
- Laboratory of BioNanoTechnology, Wageningen University, 6700 EK, Wageningen, The Netherlands
| | - Aldrik H Velders
- IRICA, Department of Inorganic, Organic and Biochemistry, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha (UCLM), Av. Camilo José Cela 10, 13071, Ciudad Real, Spain.
- Laboratory of BioNanoTechnology, Wageningen University, 6700 EK, Wageningen, The Netherlands.
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Mompeán M, Sánchez-Donoso RM, de la Hoz A, Saggiomo V, Velders AH, Gomez MV. Pushing nuclear magnetic resonance sensitivity limits with microfluidics and photo-chemically induced dynamic nuclear polarization. Nat Commun 2018; 9:108. [PMID: 29317665 PMCID: PMC5760532 DOI: 10.1038/s41467-017-02575-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 12/11/2017] [Indexed: 12/03/2022] Open
Abstract
Among the methods to enhance the sensitivity of nuclear magnetic resonance (NMR) spectroscopy, small-diameter NMR coils (microcoils) are promising tools to tackle the study of mass-limited samples. Alternatively, hyperpolarization schemes based on dynamic nuclear polarization techniques provide strong signal enhancements of the NMR target samples. Here we present a method to effortlessly perform photo-chemically induced dynamic nuclear polarization in microcoil setups to boost NMR signal detection down to sub-picomole detection limits in a 9.4T system (400 MHz 1H Larmor frequency). This setup is unaffected by current major drawbacks such as the use of high-power light sources to attempt uniform irradiation of the sample, and accumulation of degraded photosensitizer in the detection region. The latter is overcome with flow conditions, which in turn open avenues for complex applications requiring rapid and efficient mixing that are not easily achievable on an NMR tube without resorting to complex hardware. Nuclear magnetic resonance (NMR) spectroscopy is a powerful technique with an inherently low sensitivity. Here, the authors present a combination of microcoils with photo-chemically induced dynamic nuclear polarization to boost NMR sensitivity down to sub-picomole detection limits.
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Affiliation(s)
- Miguel Mompeán
- Instituto Regional de Investigación Científica Aplicada (UCLM), Avda Camilo José Cela s/n, 13071, Ciudad Real, Spain
| | - Rosa M Sánchez-Donoso
- Instituto Regional de Investigación Científica Aplicada (UCLM), Avda Camilo José Cela s/n, 13071, Ciudad Real, Spain.,Laboratory of BioNanoTechnology, Wageningen University, PO Box 8038, 6700, EK Wageningen, The Netherlands
| | - Antonio de la Hoz
- Instituto Regional de Investigación Científica Aplicada (UCLM), Avda Camilo José Cela s/n, 13071, Ciudad Real, Spain
| | - Vittorio Saggiomo
- Laboratory of BioNanoTechnology, Wageningen University, PO Box 8038, 6700, EK Wageningen, The Netherlands
| | - Aldrik H Velders
- Instituto Regional de Investigación Científica Aplicada (UCLM), Avda Camilo José Cela s/n, 13071, Ciudad Real, Spain. .,Laboratory of BioNanoTechnology, Wageningen University, PO Box 8038, 6700, EK Wageningen, The Netherlands. .,MAGNEtic resonance research FacilitY-MAGNEFY, Wageningen University & Research, PO Box 8038, 6700, EK Wageningen, The Netherlands.
| | - M Victoria Gomez
- Instituto Regional de Investigación Científica Aplicada (UCLM), Avda Camilo José Cela s/n, 13071, Ciudad Real, Spain
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3
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Gomez MV, Juan A, Jiménez-Márquez F, de la Hoz A, Velders AH. Illumination of Nanoliter-NMR Spectroscopy Chips for Real-Time Photochemical Reaction Monitoring. Anal Chem 2018; 90:1542-1546. [PMID: 29280614 DOI: 10.1021/acs.analchem.7b04114] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report the use of a small-volume nuclear-magnetic-resonance (NMR)-spectroscopy device with integrated fiber-optics for the real-time detection of UV-vis-light-assisted chemical reactions. An optical fiber is used to guide the light from LEDs or a laser diode positioned safely outside the magnet toward the 25 nL detection volume and placed right above the microfluidic channel, irradiating the transparent back of the NMR chip. The setup presented here overcomes the limitations of conventional NMR systems for in situ UV-vis illumination, with the microchannel permitting efficient light penetration even in highly concentrated solutions, requiring lower-power light intensities, and enabling high photon flux. The efficacy of the setup is illustrated with two model reactions activated at different wavelengths.
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Affiliation(s)
- M Victoria Gomez
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha (UCLM) , Avenida Camilo Jose Cela s/n, 13071 Ciudad Real, Spain
| | - Alberto Juan
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha (UCLM) , Avenida Camilo Jose Cela s/n, 13071 Ciudad Real, Spain
| | - Francisco Jiménez-Márquez
- Escuela Técnica Superior de Ingenieros (ETSI) Industriales, Universidad de Castilla-La Mancha (UCLM) , Avenida Camilo Jose Cela s/n, 13071 Ciudad Real, Spain
| | - Antonio de la Hoz
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha (UCLM) , Avenida Camilo Jose Cela s/n, 13071 Ciudad Real, Spain
| | - Aldrik H Velders
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha (UCLM) , Avenida Camilo Jose Cela s/n, 13071 Ciudad Real, Spain.,Laboratory of BioNanoTechnology, Wageningen University , P.O. Box 8038, 6700 EK Wageningen, The Netherlands
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4
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Gomez MV, de la Hoz A. NMR reaction monitoring in flow synthesis. Beilstein J Org Chem 2017; 13:285-300. [PMID: 28326137 PMCID: PMC5331343 DOI: 10.3762/bjoc.13.31] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 02/03/2017] [Indexed: 01/06/2023] Open
Abstract
Recent advances in the use of flow chemistry with in-line and on-line analysis by NMR are presented. The use of macro- and microreactors, coupled with standard and custom made NMR probes involving microcoils, incorporated into high resolution and benchtop NMR instruments is reviewed. Some recent selected applications have been collected, including synthetic applications, the determination of the kinetic and thermodynamic parameters and reaction optimization, even in single experiments and on the μL scale. Finally, software that allows automatic reaction monitoring and optimization is discussed.
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Affiliation(s)
- M Victoria Gomez
- Área Química Orgánica, Facultad de Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela nº 10, E-13071 Ciudad Real, Spain and Instituto Regional de Investigación Científica Aplicada (IRICA), Avda. Camilo José Cela s/n, E-13071 Ciudad Real, Spain
| | - Antonio de la Hoz
- Área Química Orgánica, Facultad de Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela nº 10, E-13071 Ciudad Real, Spain and Instituto Regional de Investigación Científica Aplicada (IRICA), Avda. Camilo José Cela s/n, E-13071 Ciudad Real, Spain
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5
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Gomez MV, Rodriguez AM, de la Hoz A, Jimenez-Marquez F, Fratila RM, Barneveld PA, Velders AH. Determination of Kinetic Parameters within a Single Nonisothermal On-Flow Experiment by Nanoliter NMR Spectroscopy. Anal Chem 2015; 87:10547-55. [DOI: 10.1021/acs.analchem.5b02811] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- M. Victoria Gomez
- Instituto Regional de Investigación Cientifica Aplicada, Campus Universitario, Avenida Camilo
José Cela s/n, 13071 Ciudad Real, Spain
| | - Antonio M. Rodriguez
- Instituto Regional de Investigación Cientifica Aplicada, Campus Universitario, Avenida Camilo
José Cela s/n, 13071 Ciudad Real, Spain
| | - Antonio de la Hoz
- Instituto Regional de Investigación Cientifica Aplicada, Campus Universitario, Avenida Camilo
José Cela s/n, 13071 Ciudad Real, Spain
| | - Francisco Jimenez-Marquez
- Escuela
Técnica Superior de Ingenieros (ETSI) Industriales, Universidad de Castilla-La Mancha, Avenida Camilo José Cela s/n, 13071 Ciudad Real, Spain
| | - Raluca M. Fratila
- Instituto
de Nanociencia de Aragon (INA), Universidad de Zaragoza, C/Mariano
Esquillor s/n, 50018 Zaragoza, Spain
- Fundación Agencia Aragonesa para la Investigación y Desarrollo (ARAID), C/María
de Luna 11, 50018 Zaragoza, Spain
| | | | - Aldrik H. Velders
- Instituto Regional de Investigación Cientifica Aplicada, Campus Universitario, Avenida Camilo
José Cela s/n, 13071 Ciudad Real, Spain
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6
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Numata M. Supramolecular Chemistry in Microflow Fields: Toward a New Material World of Precise Kinetic Control. Chem Asian J 2015; 10:2574-88. [DOI: 10.1002/asia.201500555] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/04/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Munenori Numata
- Department of Biomolecular Chemistry; Graduate School of Life and Environmental Sciences; Kyoto Prefectural University, Shimogamo, Sakyo-ku; Kyoto 606-8522 Japan
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7
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Multinuclear nanoliter one-dimensional and two-dimensional NMR spectroscopy with a single non-resonant microcoil. Nat Commun 2014; 5:3025. [DOI: 10.1038/ncomms4025] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 11/26/2013] [Indexed: 11/08/2022] Open
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Fratila RM, Velders AH. Small-volume nuclear magnetic resonance spectroscopy. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2011; 4:227-249. [PMID: 21391818 DOI: 10.1146/annurev-anchem-061010-114024] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy is one of the most information-rich analytical techniques available. However, it is also inherently insensitive, and this drawback precludes the application of NMR spectroscopy to mass- and volume-limited samples. We review a particular approach to increase the sensitivity of NMR experiments, namely the use of miniaturized coils. When the size of the coil is reduced, the sample volume can be brought down to the nanoliter range. We compare the main coil geometries (solenoidal, planar, and microslot/stripline) and discuss their applications to the analysis of mass-limited samples. We also provide an overview of the hyphenation of microcoil NMR spectroscopy to separation techniques and of the integration with lab-on-a-chip devices and microreactors.
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Affiliation(s)
- Raluca M Fratila
- MIRA Institute for Biomedical Engineering and Technical Medicine, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands.
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Gomez MV, Verputten HHJ, Díaz-Ortíz A, Moreno A, de la Hoz A, Velders AH. On-line monitoring of a microwave-assisted chemical reaction by nanolitre NMR-spectroscopy. Chem Commun (Camb) 2010; 46:4514-6. [PMID: 20498914 DOI: 10.1039/b924936b] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- M Victoria Gomez
- Instituto Regional de Investigación Científica Aplicada (IRICA), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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10
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Kang JH, Kim B, Park JK. Microfluidic Pycnometer for in Situ Analysis of Fluids in Microchannels. Anal Chem 2009; 81:2569-74. [DOI: 10.1021/ac802492q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joo H. Kang
- Department of Bio and Brain Engineering, College of Life Science and Bioengineering, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Bumjun Kim
- Department of Bio and Brain Engineering, College of Life Science and Bioengineering, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Je-Kyun Park
- Department of Bio and Brain Engineering, College of Life Science and Bioengineering, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Republic of Korea
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