Efficient Polarization Redistribution in Hyperpolarized 1-D-Propane Produced Via Pairwise Parahydrogen Addition | Sciact - CRIS-система Института катализа

Efficient Polarization Redistribution in Hyperpolarized 1-D-Propane Produced Via Pairwise Parahydrogen Addition Научная публикация

Журнал

Journal of Magnetic Resonance Open (JMRO)
ISSN: 2666-4410

Вых. Данные

Год: 2023, Том: 16-17, Номер статьи : 100135, Страниц : 9 DOI: 10.1016/j.jmro.2023.100135

Ключевые слова

parahydrogen; hyperpolarization; NMR; propane; spectroscopy

Авторы

Ariyasingha Nuwandi M. ¹ , Nantogma Shiraz ¹ , Samoilenko Anna ¹ , Salnikov Oleg G. ² , Chukanov Nikita V. ^2,3 , Kovtunova Larisa M. ^3,4 , Koptyug Igor V. ² , Chekmenev Eduard Y. ^5,6

Организации

1	Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
2	International Tomography Center SB RAS, 3A Institutskaya st., Novosibirsk 630090, Russia
3	Department of Natural Sciences, Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
4	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev pr., Novosibirsk 630090, Russia
5	Department of Chemistry, Integrative Biosciences (Ibio), Karmanos Cancer Institute (KCI), Wayne State University, Detroit, Michigan 48202, United States
6	Russian Academy of Sciences, 119991 Moscow, Russia

Информация о финансировании (6)

1	National Heart Lung and Blood Institute	5F32HL160108-01
2	United States Department of Defense	W81XWH-20-10576
3	National Science Foundation	CHE-1904780
4	Wayne State University
5	Совет по грантам Президента Российской Федерации	МК-2826.2022.1.3
6	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

Parahydrogen Induced Polarization (PHIP) is NMR hyperpolarization technique that has matured from fundamental science to a biomedical tool for production of hyperpolarized MRI contrast agents. The spin order of nascent parahydrogen-derived protons can be employed directly for enhancement of their NMR signals or for polarization transfer to other nuclei in the hydrogenation product. In this work, we study the process of pairwise parahydrogen addition to propylene, which results in symmetric propane molecule with substantially enhanced methyl and methylene NMR signals. Specifically, we have synthesized site-selectively isotopically labeled 3-D-propylene molecule to study polarization dynamics in the resulting mono-deuterated propane after pairwise parahydrogen addition. The deuterium presence in the hyperpolarized propane product results in a minute isotope chemical shift effect allowing to distinguish the proton resonances of CH3 and CH2D groups at 600 MHz. Pairwise parahydrogen 1,2-addition to 3-D-propylene was first confirmed by performing the reaction inside a 600 MHz NMR spectrometer, i.e., in the weakly-coupled regime at 14 T, where proton polarization dynamics is restricted to the molecular sites of parahydrogen addition. However, when the pairwise parahydrogen addition is performed in the strongly-coupled regime, i.e., at the Earth's magnetic field, efficient polarization transfer to CH2D protons is readily observed, leading to polarization redistribution between the three inequivalent sites. This finding is important as it sheds light on polarization dynamics in the strongly coupled symmetric spin systems such as propane studied here—the presented results are expected to be applicable to other spin systems such as butane.

Ariyasingha N.M. , Nantogma S. , Samoilenko A. , Salnikov O.G. , Chukanov N.V. , Kovtunova L.M. , Koptyug I.V. , Chekmenev E.Y.
Efficient Polarization Redistribution in Hyperpolarized 1-D-Propane Produced Via Pairwise Parahydrogen Addition
Journal of Magnetic Resonance Open (JMRO). 2023. V.16-17. 100135 :1-9. DOI: 10.1016/j.jmro.2023.100135 WOS Scopus РИНЦ OpenAlex

Опубликована online:	12 окт. 2023 г.
Опубликована в печати:	1 дек. 2023 г.

Web of science:	WOS:001133348700001
Scopus:	2-s2.0-85174747384
РИНЦ:	56104365
OpenAlex:	W4387579588

БД	Цитирований
OpenAlex	3
Scopus	3
РИНЦ	2
Web of science	2