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  Generating and sustaining long-lived spin states in 15N,15N'-azobenzene

Sheberstov, K. F., Vieth, H.-M., Zimmermann, H., Rodin, B. A., Ivanov, K. L., Kiryutin, A. S., et al. (2019). Generating and sustaining long-lived spin states in 15N,15N'-azobenzene. Scientific Reports, 9(1): 20161, pp. 1-11. doi:10.1038/s41598-019-56734-y.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-A4C6-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-F72E-2
Genre: Journal Article
Alternative Title : Generating and sustaining long-lived spin states in 15N,15N′-azobenzene

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 Creators:
Sheberstov, Kirill F., Author
Vieth, Hans-Martin, Author
Zimmermann, Herbert1, Author           
Rodin, Bogdan A., Author
Ivanov, Konstantin L., Author
Kiryutin, Alexey S., Author
Yurkovskaya, Alexandra V., Author
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1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: Long-Lived spin States (LLSs) hold a great promise for sustaining non-thermal spin order and investigating various slow processes by Nuclear Magnetic Resonance (NMR) spectroscopy. Of special interest for such application are molecules containing nearly equivalent magnetic nuclei, which possess LLSs even at high magnetic fields. In this work, we report an LLS in trans-15N,15N'-azobenzene. The singlet state of the 15N spin pair exhibits a long-lived character. We solve the challenging problem of generating and detecting this LLS and further increase the LLS population by converting the much higher magnetization of protons into the 15N singlet spin order. As far as the longevity of this spin order is concerned, various schemes have been tested for sustaining the LLS. Lifetimes of 17 minutes have been achieved at 16.4 T, a value about 250 times longer than the longitudinal relaxation time of 15N in this magnetic field. We believe that such extended relaxation times, along with the photochromic properties of azobenzene, which changes conformation upon light irradiation and can be hyperpolarized by using parahydrogen, are promising for designing new experiments with photo-switchable long-lived hyperpolarization.

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Language(s): eng - English
 Dates: 2019-07-252019-12-112019-12-27
 Publication Status: Published online
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41598-019-56734-y
URI: https://www.ncbi.nlm.nih.gov/pubmed/31882901
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 9 (1) Sequence Number: 20161 Start / End Page: 1 - 11 Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322