Longitudinal and Transverse [sup.1]H Nuclear Magnetic Resonance Relaxivities of Lanthanide Ions in Aqueous Solution up to 1.4 GHz/33 T
The longitudinal and transverse nuclear magnetic resonance relaxivity dispersion (NMRD) of [sup.1]H in water induced by the paramagnetic relaxation enhancement (PRE) of dissolved lanthanide ions (Ln[sup.3+]) can become very strong. Longitudinal and transverse [sup.1]H NMRD for Gd[sup.3+], Dy[sup.3+]...
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creator | Nasser Din, Rami Venu, Aiswarya Chalikunnath Rudszuck, Thomas Vallet, Alicia Favier, Adrien Powell, Annie K Guthausen, Gisela Ibrahim, Masooma Krämer, Steffen |
description | The longitudinal and transverse nuclear magnetic resonance relaxivity dispersion (NMRD) of [sup.1]H in water induced by the paramagnetic relaxation enhancement (PRE) of dissolved lanthanide ions (Ln[sup.3+]) can become very strong. Longitudinal and transverse [sup.1]H NMRD for Gd[sup.3+], Dy[sup.3+], Er[sup.3+] and Ho[sup.3+] were measured from 20 MHz/0.47 T to 1382 MHz/32.5 T, which extended previous studies by a factor of more than two in the frequency range. For the NMRD above 800 MHz, we used a resistive magnet, which exhibits reduced field homogeneity and stability in comparison to superconducting and permanent NMR magnets. These drawbacks were addressed by dedicated NMRD methods. In a comparison of NMRD measurements between 800 MHz and 950 MHz performed in both superconducting and resistive magnets, it was found that the longitudinal relaxivities were almost identical. However, the magnetic field fluctuations of the resistive magnet strongly perturbed the transverse relaxation. The longitudinal NMRDs are consistent with previous work up to 600 MHz. The transverse NMRD nearly scales with the longitudinal one with a factor close to one. The data can be interpreted within a PRE model that comprises the dipolar hyperfine interactions between the [sup.1]H and the paramagnetic ions, as well as a Curie spin contribution that is dominant at high magnetic fields for Dy[sup.3+], Er[sup.3+] and Ho[sup.3+]. Our findings provide a solid methodological basis and valuable quantitative insights for future high-frequency NMRD studies, enhancing the measurement accuracy and applicability of PRE models for paramagnetic ions in aqueous solutions. |
doi_str_mv | 10.3390/molecules29204956 |
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Longitudinal and transverse [sup.1]H NMRD for Gd[sup.3+], Dy[sup.3+], Er[sup.3+] and Ho[sup.3+] were measured from 20 MHz/0.47 T to 1382 MHz/32.5 T, which extended previous studies by a factor of more than two in the frequency range. For the NMRD above 800 MHz, we used a resistive magnet, which exhibits reduced field homogeneity and stability in comparison to superconducting and permanent NMR magnets. These drawbacks were addressed by dedicated NMRD methods. In a comparison of NMRD measurements between 800 MHz and 950 MHz performed in both superconducting and resistive magnets, it was found that the longitudinal relaxivities were almost identical. However, the magnetic field fluctuations of the resistive magnet strongly perturbed the transverse relaxation. The longitudinal NMRDs are consistent with previous work up to 600 MHz. The transverse NMRD nearly scales with the longitudinal one with a factor close to one. The data can be interpreted within a PRE model that comprises the dipolar hyperfine interactions between the [sup.1]H and the paramagnetic ions, as well as a Curie spin contribution that is dominant at high magnetic fields for Dy[sup.3+], Er[sup.3+] and Ho[sup.3+]. Our findings provide a solid methodological basis and valuable quantitative insights for future high-frequency NMRD studies, enhancing the measurement accuracy and applicability of PRE models for paramagnetic ions in aqueous solutions.</description><identifier>ISSN: 1420-3049</identifier><identifier>EISSN: 1420-3049</identifier><identifier>DOI: 10.3390/molecules29204956</identifier><language>eng</language><publisher>MDPI AG</publisher><subject>Magnetic fields ; Rare earth metals ; Superconductors</subject><ispartof>Molecules (Basel, Switzerland), 2024-10, Vol.29 (20)</ispartof><rights>COPYRIGHT 2024 MDPI AG</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,27903,27904</link.rule.ids></links><search><creatorcontrib>Nasser Din, Rami</creatorcontrib><creatorcontrib>Venu, Aiswarya Chalikunnath</creatorcontrib><creatorcontrib>Rudszuck, Thomas</creatorcontrib><creatorcontrib>Vallet, Alicia</creatorcontrib><creatorcontrib>Favier, Adrien</creatorcontrib><creatorcontrib>Powell, Annie K</creatorcontrib><creatorcontrib>Guthausen, Gisela</creatorcontrib><creatorcontrib>Ibrahim, Masooma</creatorcontrib><creatorcontrib>Krämer, Steffen</creatorcontrib><title>Longitudinal and Transverse [sup.1]H Nuclear Magnetic Resonance Relaxivities of Lanthanide Ions in Aqueous Solution up to 1.4 GHz/33 T</title><title>Molecules (Basel, Switzerland)</title><description>The longitudinal and transverse nuclear magnetic resonance relaxivity dispersion (NMRD) of [sup.1]H in water induced by the paramagnetic relaxation enhancement (PRE) of dissolved lanthanide ions (Ln[sup.3+]) can become very strong. Longitudinal and transverse [sup.1]H NMRD for Gd[sup.3+], Dy[sup.3+], Er[sup.3+] and Ho[sup.3+] were measured from 20 MHz/0.47 T to 1382 MHz/32.5 T, which extended previous studies by a factor of more than two in the frequency range. For the NMRD above 800 MHz, we used a resistive magnet, which exhibits reduced field homogeneity and stability in comparison to superconducting and permanent NMR magnets. These drawbacks were addressed by dedicated NMRD methods. In a comparison of NMRD measurements between 800 MHz and 950 MHz performed in both superconducting and resistive magnets, it was found that the longitudinal relaxivities were almost identical. However, the magnetic field fluctuations of the resistive magnet strongly perturbed the transverse relaxation. The longitudinal NMRDs are consistent with previous work up to 600 MHz. The transverse NMRD nearly scales with the longitudinal one with a factor close to one. The data can be interpreted within a PRE model that comprises the dipolar hyperfine interactions between the [sup.1]H and the paramagnetic ions, as well as a Curie spin contribution that is dominant at high magnetic fields for Dy[sup.3+], Er[sup.3+] and Ho[sup.3+]. Our findings provide a solid methodological basis and valuable quantitative insights for future high-frequency NMRD studies, enhancing the measurement accuracy and applicability of PRE models for paramagnetic ions in aqueous solutions.</description><subject>Magnetic fields</subject><subject>Rare earth metals</subject><subject>Superconductors</subject><issn>1420-3049</issn><issn>1420-3049</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNptj0FLw0AQhYMoWKs_wNuA56S7mU2yOZaibSEqaG4iZbuZxJV0t2aTIv4Af7cBPfQgc5jvDe89mCC45ixCzNls51rSQ0s-zmMm8iQ9CSZcxCzEUZ0e8Xlw4f07YzEXPJkE34WzjemHyljVgrIVlJ2y_kCdJ3jxwz7iryt4GHRLqoN71VjqjYYn8s4qq2mkVn2ag-kNeXA1FMr2b8qaimDtrAdjYf4xkBs8PLt26I2zMOyhd8AjAcvV1wwRysvgrFatp6u_PQ3Ku9tysQqLx-V6MS_CJs0wFAlV4wuCy6qSsVaSpXmuKaMYGWakZSoxkVWCuEWe5bGUIlHJFpNYKdRa4zS4-a1tVEsbY2vXd0rvjNebueRCMIECR1f0j2ucinZGO0u1Ge9HgR_6iHNS</recordid><startdate>20241001</startdate><enddate>20241001</enddate><creator>Nasser Din, Rami</creator><creator>Venu, Aiswarya Chalikunnath</creator><creator>Rudszuck, Thomas</creator><creator>Vallet, Alicia</creator><creator>Favier, Adrien</creator><creator>Powell, Annie K</creator><creator>Guthausen, Gisela</creator><creator>Ibrahim, Masooma</creator><creator>Krämer, Steffen</creator><general>MDPI AG</general><scope/></search><sort><creationdate>20241001</creationdate><title>Longitudinal and Transverse [sup.1]H Nuclear Magnetic Resonance Relaxivities of Lanthanide Ions in Aqueous Solution up to 1.4 GHz/33 T</title><author>Nasser Din, Rami ; Venu, Aiswarya Chalikunnath ; Rudszuck, Thomas ; Vallet, Alicia ; Favier, Adrien ; Powell, Annie K ; Guthausen, Gisela ; Ibrahim, Masooma ; Krämer, Steffen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g673-45ed049418dd82ca80699ce7e23037ec868358d533b317928845a5b352aa3ccc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Magnetic fields</topic><topic>Rare earth metals</topic><topic>Superconductors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nasser Din, Rami</creatorcontrib><creatorcontrib>Venu, Aiswarya Chalikunnath</creatorcontrib><creatorcontrib>Rudszuck, Thomas</creatorcontrib><creatorcontrib>Vallet, Alicia</creatorcontrib><creatorcontrib>Favier, Adrien</creatorcontrib><creatorcontrib>Powell, Annie K</creatorcontrib><creatorcontrib>Guthausen, Gisela</creatorcontrib><creatorcontrib>Ibrahim, Masooma</creatorcontrib><creatorcontrib>Krämer, Steffen</creatorcontrib><jtitle>Molecules (Basel, Switzerland)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nasser Din, Rami</au><au>Venu, Aiswarya Chalikunnath</au><au>Rudszuck, Thomas</au><au>Vallet, Alicia</au><au>Favier, Adrien</au><au>Powell, Annie K</au><au>Guthausen, Gisela</au><au>Ibrahim, Masooma</au><au>Krämer, Steffen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Longitudinal and Transverse [sup.1]H Nuclear Magnetic Resonance Relaxivities of Lanthanide Ions in Aqueous Solution up to 1.4 GHz/33 T</atitle><jtitle>Molecules (Basel, Switzerland)</jtitle><date>2024-10-01</date><risdate>2024</risdate><volume>29</volume><issue>20</issue><issn>1420-3049</issn><eissn>1420-3049</eissn><abstract>The longitudinal and transverse nuclear magnetic resonance relaxivity dispersion (NMRD) of [sup.1]H in water induced by the paramagnetic relaxation enhancement (PRE) of dissolved lanthanide ions (Ln[sup.3+]) can become very strong. Longitudinal and transverse [sup.1]H NMRD for Gd[sup.3+], Dy[sup.3+], Er[sup.3+] and Ho[sup.3+] were measured from 20 MHz/0.47 T to 1382 MHz/32.5 T, which extended previous studies by a factor of more than two in the frequency range. For the NMRD above 800 MHz, we used a resistive magnet, which exhibits reduced field homogeneity and stability in comparison to superconducting and permanent NMR magnets. These drawbacks were addressed by dedicated NMRD methods. In a comparison of NMRD measurements between 800 MHz and 950 MHz performed in both superconducting and resistive magnets, it was found that the longitudinal relaxivities were almost identical. However, the magnetic field fluctuations of the resistive magnet strongly perturbed the transverse relaxation. The longitudinal NMRDs are consistent with previous work up to 600 MHz. The transverse NMRD nearly scales with the longitudinal one with a factor close to one. The data can be interpreted within a PRE model that comprises the dipolar hyperfine interactions between the [sup.1]H and the paramagnetic ions, as well as a Curie spin contribution that is dominant at high magnetic fields for Dy[sup.3+], Er[sup.3+] and Ho[sup.3+]. Our findings provide a solid methodological basis and valuable quantitative insights for future high-frequency NMRD studies, enhancing the measurement accuracy and applicability of PRE models for paramagnetic ions in aqueous solutions.</abstract><pub>MDPI AG</pub><doi>10.3390/molecules29204956</doi></addata></record> |
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subjects | Magnetic fields Rare earth metals Superconductors |
title | Longitudinal and Transverse [sup.1]H Nuclear Magnetic Resonance Relaxivities of Lanthanide Ions in Aqueous Solution up to 1.4 GHz/33 T |
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