1
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Sviyazov SV, Babenko SV, Skovpin IV, Kovtunova LM, Chukanov NV, Stakheev AY, Burueva DB, Koptyug IV. Manipulating stereoselectivity of parahydrogen addition to acetylene to unravel interconversion of ethylene nuclear spin isomers. Phys Chem Chem Phys 2024; 26:7821-7829. [PMID: 38375632 DOI: 10.1039/d3cp04983c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Symmetric molecules exist as distinct nuclear spin isomers (NSIMs). A deeper understanding of their properties, including interconversion of different NSIMs, requires efficient techniques for NSIM enrichment. In this work, selective hydrogenation of acetylene with parahydrogen (p-H2) was used to achieve the enrichment of ethylene NSIMs and to study their equilibration processes. The effect of the stereoselectivity of H2 addition to acetylene on the imbalance of ethylene NSIMs was experimentally demonstrated by using three different heterogeneous catalysts (an immobilized Ir complex and two supported Pd catalysts). The interconversion of NSIMs with time during ethylene storage was studied using NMR spectroscopy by reacting ethylene with bromine water, which rendered the p-H2-derived protons in the produced 2-bromoethan(2H)ol (BrEtOD) magnetically inequivalent, thereby revealing the non-equilibrium nuclear spin order of ethylene. A thorough analysis of the shape and transformation of the 1H NMR spectra of hyperpolarized BrEtOD allowed us to reveal the initial distribution of produced ethylene NSIMs and their equilibration processes. Comparison of the results obtained with three different catalysts was key to properly attributing the derived characteristic time constants to different ethylene NSIM interconversion processes: ∼3-6 s for interconversion between NSIMs with the same inversion symmetry (i.e., within g or u manifolds) and ∼1700-2200 s between NSIMs with different inversion symmetries (i.e., between g and u manifolds).
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Affiliation(s)
- Sergey V Sviyazov
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Simon V Babenko
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
- V.V. Voevodsky Institute of Chemical Kinetics and Combustion, SB RAS, Novosibirsk 630090, Russia
| | - Ivan V Skovpin
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
| | - Larisa M Kovtunova
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
- Boreskov Institute of Catalysis, SB RAS, Novosibirsk 630090, Russia
| | - Nikita V Chukanov
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
- Novosibirsk State University, Novosibirsk 630090, Russia
| | | | - Dudari B Burueva
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
| | - Igor V Koptyug
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, Novosibirsk 630090, Russia.
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2
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Nartova AV, Kvon RI, Kovtunova LM, Skovpin IV, Koptyug IV, Bukhtiyarov VI. XPS and HR TEM Elucidation of the Diversity of Titania-Supported Single-Site Ir Catalyst Performance in Spin-Selective Propene Hydrogenation. Int J Mol Sci 2023; 24:15643. [PMID: 37958626 PMCID: PMC10650017 DOI: 10.3390/ijms242115643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Immobilized [Ir(COD)Cl]2-Linker/TiO2 catalysts with linkers containing Py, P(Ph)2 and N(CH3)2 functional groups were prepared. The catalysts were tested via propene hydrogenation with parahydrogen in a temperature range from 40 °C to 120 °C which was monitored via NMR. The catalytic behavior of [Ir(COD)Cl]2-Linker/TiO2 is explained on the basis of quantitative and qualitative XPS data analysis performed for the catalysts before and after the reaction at 120 °C. It is shown that the temperature dependence of propene conversion and the enhancement of the NMR signal are explained via a combination of the stabilities of both the linker and immobilized [Ir(COD)Cl]2 complex. It is demonstrated that the N(CH3)2-linker is the most stable at the surface of TiO2 under used reaction conditions. As a result, only this sample shows a rise in the enhancement of the NMR signal in the 100-120 °C temperature range.
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Affiliation(s)
- Anna V. Nartova
- Department of Physical-Chemical Methods of Investigation, Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia; (R.I.K.); (V.I.B.)
| | - Ren I. Kvon
- Department of Physical-Chemical Methods of Investigation, Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia; (R.I.K.); (V.I.B.)
| | - Larisa M. Kovtunova
- Department of Physical-Chemical Methods of Investigation, Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia; (R.I.K.); (V.I.B.)
| | - Ivan V. Skovpin
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, Institutskaya St. 3A, 630090 Novosibirsk, Russia (I.V.K.)
| | - Igor V. Koptyug
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, Institutskaya St. 3A, 630090 Novosibirsk, Russia (I.V.K.)
| | - Valerii I. Bukhtiyarov
- Department of Physical-Chemical Methods of Investigation, Boreskov Institute of Catalysis SB RAS, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia; (R.I.K.); (V.I.B.)
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3
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Trepakova AI, Skovpin IV, Chukanov NV, Salnikov OG, Chekmenev EY, Pravdivtsev AN, Hövener JB, Koptyug IV. Subsecond Three-Dimensional Nitrogen-15 Magnetic Resonance Imaging Facilitated by Parahydrogen-Based Hyperpolarization. J Phys Chem Lett 2022; 13:10253-10260. [PMID: 36301252 PMCID: PMC9983028 DOI: 10.1021/acs.jpclett.2c02705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Magnetic resonance imaging (MRI) provides unique information about the internal structure and function of living organisms in a non-invasive way. The use of conventional proton MRI for the observation of real-time metabolism is hampered by the dominant signals of water and fat, which are abundant in living organisms. Heteronuclear MRI in conjunction with the hyperpolarization methods does not encounter this issue. In this work, we polarized 15N nuclei of [15N1]fampridine (a drug used for the treatment of multiple sclerosis) to the level of 4% in nuclear magnetic resonance (NMR) experiments and 0.7% in MRI studies using spin-lock-induced crossing combined with signal amplification by reversible exchange. Consequently, three-dimensional 15N MRI of the hyperpolarized 15N-labeled drug was acquired in 0.1 s with a signal-to-noise ratio of 70. In addition, the NMR signal enhancements for 15N-enriched fampridine and fampridine with a natural abundance of 15N nuclei were compared and an explanation for their difference was proposed.
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Affiliation(s)
- Alexandra I. Trepakova
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova St., Novosibirsk, 630090, Russia
- Institute of Cytology and Genetics, SB RAS, 10 Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia
| | - Ivan V. Skovpin
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
| | - Nikita V. Chukanov
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova St., Novosibirsk, 630090, Russia
| | - Oleg G. Salnikov
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
| | - Eduard Y. Chekmenev
- Department of Chemistry, Integrative Biosciences (Ibio), Karmanos Cancer Institute (KCI), Wayne State University, Detroit, Michigan, 48202, USA
- Russian Academy of Sciences (RAS), 14 Leninskiy Prospekt, Moscow, 119991, Russia
| | - Andrey N. Pravdivtsev
- Department of Radiology and Neuroradiology Section Biomedical Imaging, MOIN CC, Universitätsklinikum Schleswig-Holstein, Universität Kiel, 14 Am Botanischen Garten, Kiel, 24118, Germany
| | - Jan-Bernd Hövener
- Department of Radiology and Neuroradiology Section Biomedical Imaging, MOIN CC, Universitätsklinikum Schleswig-Holstein, Universität Kiel, 14 Am Botanischen Garten, Kiel, 24118, Germany
| | - Igor V. Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
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4
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Skovpin IV, Kovtunova LM, Nartova AV, Kvon RI, Bukhtiyarov VI, Koptyug IV. Anchored complexes of rhodium and iridium for the hydrogenation of alkynes and olefins with parahydrogen. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02258j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iridium and rhodium complexes anchored on silica gel surface via NH2–(CH2)3– and P(Ph)2–(CH2)2– linker groups achieve high (∼9%) efficiency in pairwise addition of parahydrogen to unsaturated gaseous substrates in heterogeneous hydrogenation processes.
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Affiliation(s)
- Ivan V. Skovpin
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
| | - Larisa M. Kovtunova
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
- Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev Pr., Novosibirsk 630090, Russia
| | - Anna V. Nartova
- Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev Pr., Novosibirsk 630090, Russia
| | - Ren I. Kvon
- Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev Pr., Novosibirsk 630090, Russia
| | - Valerii I. Bukhtiyarov
- Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev Pr., Novosibirsk 630090, Russia
| | - Igor V. Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
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5
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Them K, Ellermann F, Pravdivtsev AN, Salnikov OG, Skovpin IV, Koptyug IV, Herges R, Hövener JB. Parahydrogen-Induced Polarization Relayed via Proton Exchange. J Am Chem Soc 2021; 143:13694-13700. [PMID: 34406748 DOI: 10.1021/jacs.1c05254] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The hyperpolarization of nuclear spins is a game-changing technology that enables hitherto inaccessible applications for magnetic resonance in chemistry and biomedicine. Despite significant advances and discoveries in the past, however, the quest to establish efficient and effective hyperpolarization methods continues. Here, we describe a new method that combines the advantages of direct parahydrogenation, high polarization (P), fast reaction, and low cost with the broad applicability of polarization transfer via proton exchange. We identified the system propargyl alcohol + pH2 → allyl alcohol to yield 1H polarization in excess of P ≈ 13% by using only 50% enriched pH2 at a pressure of ≈1 bar. The polarization was then successfully relayed via proton exchange from allyl alcohol to various target molecules. The polarizations of water and alcohols (as target molecules) approached P ≈ 1% even at high molar concentrations of 100 mM. Lactate, glucose, and pyruvic acid were also polarized, but to a lesser extent. Several potential improvements of the methodology are discussed. Thus, the parahydrogen-induced hyperpolarization relayed via proton exchange (PHIP-X) is a promising approach to polarize numerous molecules which participate in proton exchange and support new applications for magnetic resonance.
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Affiliation(s)
- Kolja Them
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein and Kiel University, Am Botanischen Garten 14, 24118 Kiel, Germany
| | - Frowin Ellermann
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein and Kiel University, Am Botanischen Garten 14, 24118 Kiel, Germany
| | - Andrey N Pravdivtsev
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein and Kiel University, Am Botanischen Garten 14, 24118 Kiel, Germany
| | - Oleg G Salnikov
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk 630090, Russia.,Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia.,Boreskov Institute of Catalysis SB RAS, 4 Acad. Lavrentiev pr., Novosibirsk 630090, Russia
| | - Ivan V Skovpin
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk 630090, Russia.,Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
| | - Igor V Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk 630090, Russia.,Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
| | - Rainer Herges
- Otto-Diels-Institute for Organic Chemistry, Christian-Albrechts-University, 24118 Kiel, Germany
| | - Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein and Kiel University, Am Botanischen Garten 14, 24118 Kiel, Germany
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6
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Kovtunov KV, Salnikov OG, Skovpin IV, Chukanov NV, Burueva DB, Koptyug IV. Catalytic hydrogenation with parahydrogen: a bridge from homogeneous to heterogeneous catalysis. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2020-0203] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
One of the essential themes in modern catalysis is that of bridging the gap between its homogeneous and heterogeneous counterparts to combine their individual advantages and overcome shortcomings. One more incentive can now be added to the list, namely the ability of transition metal complexes to provide strong nuclear magnetic resonance (NMR) signal enhancement upon their use in homogeneous hydrogenations of unsaturated compounds with parahydrogen in solution. The addition of both H atoms of a parahydrogen molecule to the same substrate, a prerequisite for such effects, is implemented naturally with metal complexes that operate via the formation of a dihydride intermediate, but not with most heterogeneous catalysts. Despite that, it has been demonstrated in recent years that various types of heterogeneous catalysts are able to perform the required pairwise H2 addition at least to some extent. This has opened a major gateway for developing highly sensitive and informative tools for mechanistic studies of heterogeneous hydrogenations and other processes involving H2. Besides, production of catalyst-free fluids with NMR signals enhanced by 3-4 orders of magnitude is essential for modern applications of magnetic resonance imaging (MRI), including biomedical research and practice. The ongoing efforts to design heterogeneous catalysts which can implement the homogeneous (pairwise) hydrogenation mechanism are reported.
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Affiliation(s)
- Kirill V. Kovtunov
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
| | - Oleg G. Salnikov
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
- Boreskov Institute of Catalysis , SB RAS , 5 Acad. Lavrentiev Ave. , Novosibirsk, 630090 , Russia
| | - Ivan V. Skovpin
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
- Boreskov Institute of Catalysis , SB RAS , 5 Acad. Lavrentiev Ave. , Novosibirsk, 630090 , Russia
| | - Nikita V. Chukanov
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
| | - Dudari B. Burueva
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
| | - Igor V. Koptyug
- International Tomography Center , SB RAS , Institutskaya St. 3A , Novosibirsk, 630090 , Russia
- Novosibirsk State University , Pirogova St. 1 , Novosibirsk, 630090 , Russia
- Boreskov Institute of Catalysis , SB RAS , 5 Acad. Lavrentiev Ave. , Novosibirsk, 630090 , Russia
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7
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Skovpin IV, Svyatova A, Chukanov N, Chekmenev EY, Kovtunov KV, Koptyug IV. 15 N Hyperpolarization of Dalfampridine at Natural Abundance for Magnetic Resonance Imaging. Chemistry 2019; 25:12694-12697. [PMID: 31338889 PMCID: PMC6790219 DOI: 10.1002/chem.201902724] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/03/2019] [Indexed: 11/10/2022]
Abstract
Signal Amplification by Reversible Exchange (SABRE) is a promising method for NMR signal enhancement and production of hyperpolarized molecules. As nuclear spin relaxation times of heteronuclei are usually much longer than those of protons, SABRE-based hyperpolarization of heteronuclei in molecules is highly important in the context of biomedical applications. In this work, we demonstrate that the SLIC-SABRE technique can be successfully used to hyperpolarize 15 N nuclei in dalfampridine. The high polarization level of ca. 8 % achieved in this work made it possible to acquire 15 N MR images at natural abundance of the 15 N nuclei for the first time.
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Affiliation(s)
- Ivan V Skovpin
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Alexandra Svyatova
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Nikita Chukanov
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Eduard Y Chekmenev
- Department of Chemistry, Karmanos Cancer Institute (KCI), Integrative Biosciences (Ibio), Wayne State University, Detroit, MI, USA
- Russian Academy of Sciences (RAS), 14 Leninskiy Prospekt, Moscow, 119991, Russia
| | - Kirill V Kovtunov
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Igor V Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
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8
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Svyatova A, Skovpin IV, Chukanov NV, Kovtunov KV, Chekmenev EY, Pravdivtsev AN, Hövener JB, Koptyug IV. 15 N MRI of SLIC-SABRE Hyperpolarized 15 N-Labelled Pyridine and Nicotinamide. Chemistry 2019; 25:8465-8470. [PMID: 30950529 PMCID: PMC6679352 DOI: 10.1002/chem.201900430] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Indexed: 01/10/2023]
Abstract
Magnetic Resonance Imaging (MRI) is a powerful non-invasive diagnostic method extensively used in biomedical studies. A significant limitation of MRI is its relatively low signal-to-noise ratio, which can be increased by hyperpolarizing nuclear spins. One promising method is Signal Amplification By Reversible Exchange (SABRE), which employs parahydrogen as a source of hyperpolarization. Recent studies demonstrated the feasibility to improve MRI sensitivity with this hyperpolarization technique. Hyperpolarized 15 N nuclei in biomolecules can potentially retain their spin alignment for tens of minutes, providing an extended time window for the utilization of the hyperpolarized compounds. In this work, we demonstrate for the first time that radio-frequency-based SABRE hyperpolarization techniques can be used to obtain 15 N MRI of biomolecule 1-15 N-nicotinamide. Two image acquisition strategies were utilized and compared: Single Point Imaging (SPI) and Fast Low Angle SHot (FLASH). These methods demonstrated opportunities of high-field SABRE for biomedical applications.
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Affiliation(s)
- Alexandra Svyatova
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Ivan V Skovpin
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Nikita V Chukanov
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Kirill V Kovtunov
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
| | - Eduard Y Chekmenev
- Department of Chemistry, Wayne State University, Karmanos Cancer Institute (KCI), Integrative Biosciences (Ibio), Detroit, MI 48202, USA
- Russian Academy of Sciences (RAS), 14 Leninskiy Prospekt, Moscow, 119991, Russia
| | - Andrey N Pravdivtsev
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology University Medical Center Schleswig-Holstein (UKSH), Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology University Medical Center Schleswig-Holstein (UKSH), Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Igor V Koptyug
- International Tomography Center, SB RAS, 3A Institutskaya st., Novosibirsk, 630090, Russia
- Novosibirsk State University, 2 Pirogova st., Novosibirsk, 630090, Russia
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9
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Pravdivtsev AN, Skovpin IV, Svyatova AI, Chukanov NV, Kovtunova LM, Bukhtiyarov VI, Chekmenev EY, Kovtunov KV, Koptyug IV, Hövener JB. Chemical Exchange Reaction Effect on Polarization Transfer Efficiency in SLIC-SABRE. J Phys Chem A 2018; 122:9107-9114. [PMID: 30295488 DOI: 10.1021/acs.jpca.8b07163] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Signal Amplification By Reversible Exchange (SABRE) is a new and rapidly developing hyperpolarization technique. The recent discovery of Spin-Lock Induced Crossing SABRE (SLIC-SABRE) showed that high field hyperpolarization transfer techniques developed so far were optimized for singlet spin order that does not coincide with the experimentally produced spin state. Here, we investigated the SLIC-SABRE approach and the most advanced quantitative theoretical SABRE model to date. Our goal is to achieve the highest possible polarization with SLIC-SABRE at high field using the standard SABRE system, IrIMes catalyst with pyridine. We demonstrated the accuracy of the SABRE model describing the effects of various physical parameters such as the amplitude and frequency of the radio frequency field, and the effects of chemical parameters such as the exchange rate constants. By fitting the model to the experimental data, the effective life time of the SABRE complex was estimated, as well as the entropy and enthalpy of the complex-dissociation reaction. We show, for the first time, that this SLIC-SABRE model can be useful for the evaluation of the chemical exchange parameters that are very important for the production of highly polarized contrast agents via SABRE.
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Affiliation(s)
- Andrey N Pravdivtsev
- Section for Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology , University Medical Center Schleswig-Holstein (UKSH), Kiel University , Am Botanischen Garten 14 , 24118 Kiel , Germany
| | - Ivan V Skovpin
- International Tomography Center , Siberian Branch of the Russian Academy of the Sciences , Institutskaya st. 3 A , 630090 Novosibirsk , Russia.,Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia
| | - Alexandra I Svyatova
- International Tomography Center , Siberian Branch of the Russian Academy of the Sciences , Institutskaya st. 3 A , 630090 Novosibirsk , Russia.,Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia
| | - Nikita V Chukanov
- International Tomography Center , Siberian Branch of the Russian Academy of the Sciences , Institutskaya st. 3 A , 630090 Novosibirsk , Russia.,Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia
| | - Larisa M Kovtunova
- Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia.,Boreskov Institute of Catalysis , Siberian Branch of the Russian Academy of the Sciences , 5 Acad. Lavrentiev Ave. , 630090 Novosibirsk , Russia
| | - Valerii I Bukhtiyarov
- Boreskov Institute of Catalysis , Siberian Branch of the Russian Academy of the Sciences , 5 Acad. Lavrentiev Ave. , 630090 Novosibirsk , Russia
| | - Eduard Y Chekmenev
- Department of Chemistry , Wayne State University, Karmanos Cancer Institute (KCI), Integrative Biosciences (Ibio) , Detroit , Michigan 48202 , United States.,Russian Academy of Sciences , Leninskiy Prospekt 14 , 119991 Moscow , Russia
| | - Kirill V Kovtunov
- International Tomography Center , Siberian Branch of the Russian Academy of the Sciences , Institutskaya st. 3 A , 630090 Novosibirsk , Russia.,Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia
| | - Igor V Koptyug
- International Tomography Center , Siberian Branch of the Russian Academy of the Sciences , Institutskaya st. 3 A , 630090 Novosibirsk , Russia.,Novosibirsk State University , Pirogova st. 2 , 630090 Novosibirsk , Russia
| | - Jan-Bernd Hövener
- Section for Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology , University Medical Center Schleswig-Holstein (UKSH), Kiel University , Am Botanischen Garten 14 , 24118 Kiel , Germany
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Zhivonitko VV, Skovpin IV, Szeto KC, Taoufik M, Koptyug IV. Parahydrogen-Induced Polarization Study of the Silica-Supported Vanadium Oxo Organometallic Catalyst. J Phys Chem C Nanomater Interfaces 2018; 122:4891-4900. [PMID: 30258526 PMCID: PMC6150668 DOI: 10.1021/acs.jpcc.7b12069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/12/2018] [Indexed: 06/08/2023]
Abstract
Parahydrogen can be used in catalytic hydrogenations to achieve substantial enhancement of NMR signals of the reaction products and in some cases of the reaction reagents as well. The corresponding nuclear spin hyperpolarization technique, known as parahydrogen-induced polarization (PHIP), has been applied to boost the sensitivity of NMR spectroscopy and magnetic resonance imaging by several orders of magnitude. The catalyst properties are of paramount importance for PHIP because the addition of parahydrogen to a substrate must be pairwise. This requirement significantly narrows down the range of the applicable catalysts. Herein, we study an efficient silica-supported vanadium oxo organometallic complex (VCAT) in hydrogenation and dehydrogenation reactions in terms of efficient PHIP production. This is the first example of group 5 catalyst used to produce PHIP. Hydrogenations of propene and propyne with parahydrogen over VCAT demonstrated production of hyperpolarized propane and propene, respectively. The achieved NMR signal enhancements were 200-300-fold in the case of propane and 1300-fold in the case of propene. Propane dehydrogenation in the presence of parahydrogen produced no hyperpolarized propane, but instead the hyperpolarized side-product 1-butene was detected. Test experiments of other group 5 (Ta) and group 4 (Zr) catalysts showed a much lower efficiency in PHIP as compared to that of VCAT. The results prove the general conclusion that vanadium-based catalysts and other group 4 and group 5 catalysts can be used to produce PHIP. The hydrogenation/dehydrogenation processes, however, are accompanied by side reactions leading, for example, to C4, C2, and C1 side products. Some of the side products like 1-butene and 2-butene were shown to appear hyperpolarized, demonstrating that the reaction mechanism includes pairwise parahydrogen addition in these cases as well.
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Affiliation(s)
- Vladimir V. Zhivonitko
- NMR
Research Unit, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
- Laboratory
of Magnetic Resonance Microimaging, International
Tomography Center SB RAS, Institutskaya Street 3A, 630090 Novosibirsk, Russia
- Department
of Natural Sciences, Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Ivan V. Skovpin
- Laboratory
of Magnetic Resonance Microimaging, International
Tomography Center SB RAS, Institutskaya Street 3A, 630090 Novosibirsk, Russia
- Department
of Natural Sciences, Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Kai C. Szeto
- Laboratoire
de Chimie, Catalyse, Polymères et Procédés, UMR
5265 CNRS/ESCPE-Lyon/UCBL, ESCPE Lyon, F-308-43, Boulevard du 11 Novembre 1918, F-69616 Villeurbanne Cedex, France
| | - Mostafa Taoufik
- Laboratoire
de Chimie, Catalyse, Polymères et Procédés, UMR
5265 CNRS/ESCPE-Lyon/UCBL, ESCPE Lyon, F-308-43, Boulevard du 11 Novembre 1918, F-69616 Villeurbanne Cedex, France
| | - Igor V. Koptyug
- Laboratory
of Magnetic Resonance Microimaging, International
Tomography Center SB RAS, Institutskaya Street 3A, 630090 Novosibirsk, Russia
- Department
of Natural Sciences, Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
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11
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Salnikov OG, Kovtunova LM, Skovpin IV, Bukhtiyarov VI, Kovtunov KV, Koptyug IV. Mechanistic Insight into the Heterogeneous Hydrogenation of Furan Derivatives with the use of Parahydrogen. ChemCatChem 2018. [DOI: 10.1002/cctc.201701653] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Oleg G. Salnikov
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Larisa M. Kovtunova
- Laboratory of Surface Science; Boreskov Institute of Catalysis, SB RAS; 5 Acad. Lavrentiev pr. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Ivan V. Skovpin
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Valerii I. Bukhtiyarov
- Laboratory of Surface Science; Boreskov Institute of Catalysis, SB RAS; 5 Acad. Lavrentiev pr. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Kirill V. Kovtunov
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
| | - Igor V. Koptyug
- Laboratory of Magnetic Resonance Microimaging; International Tomography Center, SB RAS; 3A Institutskaya st. Novosibirsk 630090 Russia
- Novosibirsk State University; 2 Pirogova st. Novosibirsk 630090 Russia
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12
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Kovtunov KV, Salnikov OG, Zhivonitko VV, Skovpin IV, Bukhtiyarov VI, Koptyug IV. Catalysis and Nuclear Magnetic Resonance Signal Enhancement with Parahydrogen. Top Catal 2016. [DOI: 10.1007/s11244-016-0688-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhivonitko VV, Skovpin IV, Koptyug IV. Strong 31P nuclear spin hyperpolarization produced via reversible chemical interaction with parahydrogen. Chem Commun (Camb) 2015; 51:2506-9. [PMID: 25358646 DOI: 10.1039/c4cc08115c] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substantial (31)P NMR signal enhancement of more than two orders of magnitude at 7 T for free and bound PPh3 species was observed under reversible interaction of (PPh3)3Ir(H2)Cl with parahydrogen. The large improvement in sensitivity made single-shot (31)P NMR imaging of a model object possible. The observed effects are temperature and magnetic field dependent as shown experimentally and theoretically.
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Affiliation(s)
- Vladimir V Zhivonitko
- Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, Instututskaya St. 3A, 630090 Novosibirsk, Russia.
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Kovtunov KV, Zhivonitko VV, Skovpin IV, Barskiy DA, Koptyug IV. Parahydrogen-induced polarization in heterogeneous catalytic processes. Top Curr Chem (Cham) 2012; 338:123-80. [PMID: 23097028 DOI: 10.1007/128_2012_371] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Parahydrogen-induced polarization of nuclear spins provides enhancements of NMR signals for various nuclei of up to four to five orders of magnitude in magnetic fields of modern NMR spectrometers and even higher enhancements in low and ultra-low magnetic fields. It is based on the use of parahydrogen in catalytic hydrogenation reactions which, upon pairwise addition of the two H atoms of parahydrogen, can strongly enhance the NMR signals of reaction intermediates and products in solution. A recent advance in this field is the demonstration that PHIP can be observed not only in homogeneous hydrogenations but also in heterogeneous catalytic reactions. The use of heterogeneous catalysts for generating PHIP provides a number of significant advantages over the homogeneous processes, including the possibility to produce hyperpolarized gases, better control over the hydrogenation process, and the ease of separation of hyperpolarized fluids from the catalyst. The latter advantage is of paramount importance in light of the recent tendency toward utilization of hyperpolarized substances in in vivo spectroscopic and imaging applications of NMR. In addition, PHIP demonstrates the potential to become a useful tool for studying mechanisms of heterogeneous catalytic processes and for in situ studies of operating catalytic reactors. Here, the known examples of PHIP observations in heterogeneous reactions over immobilized transition metal complexes, supported metals, and some other types of heterogeneous catalysts are discussed and the applications of the technique for hypersensitive NMR imaging studies are presented.
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Affiliation(s)
- Kirill V Kovtunov
- International Tomography Center, SB RAS, 3A Institutskaya St, Novosibirsk, 630090, Russian Federation
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