Heterogeneous Microtesla SABRE Enhancement of 15N NMR Signals | Sciact - CRIS-system of Boreskov Institute of Catalysis

Heterogeneous Microtesla SABRE Enhancement of 15N NMR Signals Full article

Journal

Angewandte Chemie (German edition)
ISSN: 0044-8249 , E-ISSN: 1521-3757

Output data

Year: 2017, Volume: 129, Number: 35, Pages: 10569-10573 Pages count : 5 DOI: 10.1002/ange.201705014

Tags

apatite; dysprosium; luminescence; magnetic properties; single-molecule magnets

Authors

Kovtunov Kirill V. ^1,2 , Kovtunova Larisa M. ^2,3 , Gemeinhardt Max E. ⁴ , Bukhtiyarov Andrey V. ³ , Gesiorski Jonathan ⁴ , Bukhtiyarov Valerii I. ³ , Chekmenev Eduard Y. ^6,7,8 , Koptyug Igor V. ^1,2 , Goodson Boyd M. ^4,5

Affiliations

1	Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090 (Russia)
2	Novosibirsk State University, 2 Pirogova St., Novosibirsk 630090 (Russia)
3	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Pr., Novosibirsk 630090 (Russia)
4	Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL 62901 (USA)
5	Materials Technology Center, Southern Illinois University, Carbondale, IL 62901 (USA)
6	Vanderbilt University Institute of Imaging Science (VUIIS)
7	Department of Radiology, Department of Biomedical Engineering, Department of Physics and Astronomy, Vanderbilt-Ingram Cancer Center (VICC), Nashville, TN 37232-2310 (USA)
8	Russian Academy of Sciences, Leninskiy Prospekt 14, 119991 Moscow (Russia)

The hyperpolarization of heteronuclei via signal amplification by reversible exchange (SABRE) was investigated under conditions of heterogeneous catalysis and microtesla magnetic fields. Immobilization of [IrCl(COD)(IMes)], [IMes=1,3‐bis(2,4,6‐trimethylphenyl), imidazole‐2‐ylidene; COD=cyclooctadiene] catalyst onto silica particles modified with amine linkers engenders an effective heterogeneous SABRE (HET‐SABRE) catalyst that was used to demonstrate a circa 100‐fold enhancement of 15N NMR signals in 15N‐pyridine at 9.4 T following parahydrogen bubbling within a magnetic shield. No 15N NMR enhancement was observed from the supernatant liquid following catalyst separation, which along with XPS characterization supports the fact that the effects result from SABRE under heterogeneous catalytic conditions. The technique can be developed further for producing catalyst‐free agents via SABRE with hyperpolarized heteronuclear spins, and thus is promising for biomedical NMR and MRI applications.

Kovtunov K.V. , Kovtunova L.M. , Gemeinhardt M.E. , Bukhtiyarov A.V. , Gesiorski J. , Bukhtiyarov V.I. , Chekmenev E.Y. , Koptyug I.V. , Goodson B.M.
Heterogeneous Microtesla SABRE Enhancement of 15N NMR Signals

Angewandte Chemie (German edition). 2017. V.129. N35. P.10569-10573. DOI: 10.1002/ange.201705014 РИНЦ OpenAlex

Kovtunov K.V. , Kovtunova L.M. , Gemeinhardt M.E. , Bukhtiyarov A.V. , Gesiorski J. , Bukhtiyarov V.I. , Chekmenev E.Y. , Koptyug I.V. , Goodson B.
Heterogeneous Microtesla SABRE Enhancement of 15N NMR Signals

Angewandte Chemie - International Edition. 2017. V.56. N35. P.10433-10437. DOI: 10.1002/anie.201705014 WOS Scopus РИНЦ AN PMID OpenAlex

Full text from publisher

Submitted:	May 15, 2017
Accepted:	Jun 23, 2017
Published online:	Jul 28, 2017
Published print:	Aug 21, 2017

Elibrary:	47527016
OpenAlex:	W4250650740

DB	Citing
Elibrary	6
OpenAlex	28