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Alcicek S, Put P, Kubrak A, Alcicek FC, Barskiy D, Gloeggler S, Dybas J, Pustelny S. Zero- to low-field relaxometry of chemical and biological fluids. Commun Chem 2023; 6:165. [PMID: 37542142 PMCID: PMC10403525 DOI: 10.1038/s42004-023-00965-8] [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: 03/14/2023] [Accepted: 07/26/2023] [Indexed: 08/06/2023] Open
Abstract
Nuclear magnetic resonance (NMR) relaxometry is an analytical method that provides information about molecular environments, even for NMR "silent" molecules (spin-0), by analyzing the properties of NMR signals versus the magnitude of the longitudinal field. Conventionally, this technique is performed at fields much higher than Earth's magnetic field, but our work focuses on NMR relaxometry at zero and ultra-low magnetic fields (ZULFs). Operating under such conditions allows us to investigate slow (bio)chemical processes occurring on a timescale from milliseconds to seconds, which coincide with spin evolution. ZULFs also minimize T2 line broadening in heterogeneous samples resulting from magnetic susceptibility. Here, we use ZULF NMR relaxometry to analyze (bio)chemical compounds containing 1H-13C, 1H-15N, and 1H-31P spin pairs. We also detected high-quality ULF NMR spectra of human whole-blood at 0.8 μT, despite a shortening of spin relaxation by blood proteomes (e.g., hemoglobin). Information on proton relaxation times of blood, a potential early biomarker of inflammation, can be acquired in under a minute using inexpensive, portable/small-size NMR spectrometers based on atomic magnetometers.
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Affiliation(s)
- Seyma Alcicek
- Goethe University Frankfurt, University Hospital, Institute of Neuroradiology, 60528, Frankfurt am Main, Germany.
- Institute of Physics Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University in Kraków, 30-348, Kraków, Poland.
| | - Piotr Put
- Institute of Physics Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University in Kraków, 30-348, Kraków, Poland
| | - Adam Kubrak
- Faculty of Chemistry, Jagiellonian University in Kraków, 30-387, Krakow, Poland
| | - Fatih Celal Alcicek
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University in Kraków, 30-348, Kraków, Poland
| | - Danila Barskiy
- Helmholtz Institute Mainz, GSI Helmholtz Center for Heavy Ion Research GmbH, 55128, Mainz, Germany
- Institute of Physics, Johannes Gutenberg-Universität, 55128, Mainz, Germany
| | - Stefan Gloeggler
- Max Planck Institute for Multidisciplinary Sciences, 37077, Göttingen, Germany
| | - Jakub Dybas
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University in Kraków, 30-348, Kraków, Poland
| | - Szymon Pustelny
- Institute of Physics Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University in Kraków, 30-348, Kraków, Poland.
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Shainyan BA, Chipanina NN, Oznobikhina LP. The basicity of sulfonamides and carboxamides. Theoretical and experimental analysis and effect of fluorinated substituent. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2910] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bagrat. A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Branch of Russian Academy of Sciences; Favorsky Str. 1; RUS- 664033; Irkutsk; Russia
| | - Nina. N. Chipanina
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Branch of Russian Academy of Sciences; Favorsky Str. 1; RUS- 664033; Irkutsk; Russia
| | - Larisa. P. Oznobikhina
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Branch of Russian Academy of Sciences; Favorsky Str. 1; RUS- 664033; Irkutsk; Russia
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Balevicius V, Gdaniec Z, Aidas K, Tamuliene J. NMR and Quantum Chemistry Study of Mesoscopic Effects in Ionic Liquids. J Phys Chem A 2010; 114:5365-71. [DOI: 10.1021/jp909293b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vytautas Balevicius
- Faculty of Physics, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, PL-61704 Poznan, Poland, Department of Chemistry, H. C. Ørsted Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Institute of Theoretical Physics and Astronomy, Vilnius University, Gostauto 12, LT-01108 Vilnius, Lithuania
| | - Zofia Gdaniec
- Faculty of Physics, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, PL-61704 Poznan, Poland, Department of Chemistry, H. C. Ørsted Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Institute of Theoretical Physics and Astronomy, Vilnius University, Gostauto 12, LT-01108 Vilnius, Lithuania
| | - Kestutis Aidas
- Faculty of Physics, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, PL-61704 Poznan, Poland, Department of Chemistry, H. C. Ørsted Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Institute of Theoretical Physics and Astronomy, Vilnius University, Gostauto 12, LT-01108 Vilnius, Lithuania
| | - Jelena Tamuliene
- Faculty of Physics, Vilnius University, Sauletekio 9-3, LT-10222 Vilnius, Lithuania, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Z. Noskowskiego 12/14, PL-61704 Poznan, Poland, Department of Chemistry, H. C. Ørsted Institute, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Institute of Theoretical Physics and Astronomy, Vilnius University, Gostauto 12, LT-01108 Vilnius, Lithuania
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Abstract
Density functional theory calculations were used to examine the effect of H-bond cooperativity on the magnitude of the NMR chemical shifts and spin-spin coupling constants in a C4h-symmetric G-quartet and in structures consisting of six cyanamide monomers. These included two ring structures (a planar C6h-symmetric structure and a nonplanar S6-symmetric structure) and two linear chain structures (a fully optimized planar Cs-symmetric chain and a planar chain structure where all intra- and intermolecular parameters were constrained to be identical). The NMR parameters were computed for the G-quartet and cyanamide structures, as well as for shorter fragments derived from these assemblies without reoptimization. In the ring structures and the chain with identical monomers, the intra- and intermolecular geometries of the cyanamides were identical, thereby allowing the study of cooperative effects in the absence of geometry changes. The magnitude of the |1JNH| coupling, 1H and 15N chemical shifts of the H-bonding amino N-H group, and the |h2JNN| H-bond coupling increased, whereas the size of the |1JNH| coupling of the non-H-bonded amino N-H bonds of the first amino group in the chain, which are roughly perpendicular to the H-bonding network, decreased in magnitude when H-bonding monomers were progressively added to extending ring or chain structures. These effects are attributed to electron redistribution induced by the presence of the nearby H-bonding guanine or cyanamide molecules.
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Affiliation(s)
- Tanja van Mourik
- Chemistry Department, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
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Ribeiro-Claro PJA, Marques MPM, Amado AM. Experimental and theoretical evidence of C-H...O hydrogen bonding in liquid 4-fluorobenzaldehyde. Chemphyschem 2002; 3:599-606. [PMID: 12503161 DOI: 10.1002/1439-7641(20020715)3:7<599::aid-cphc599>3.0.co;2-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The presence of C-H...O hydrogen bonds in liquid 4-fluorobenzaldehyde has been studied by a combination of theoretical and spectroscopic methods. Ab initio calculations yielded bond energies and preferred bonding geometries, and the calculated spectroscopic properties have been compared with the experimental results. The presence of C-H...O hydrogen bonds in the liquid phase is strongly supported by vibrational and NMR spectroscopic data. Particular attention is paid to the spectroscopic effects related to the predicted shortening of the C-H bond engaged in the C-H...O contact. The concentration-dependent intensity in the C-H stretching region is tentatively assigned to a blue-shift effect due to C-H...O hydrogen bonding.
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