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dc.contributor.author
Soetbeer, Janne
dc.contributor.author
Gast, Peter
dc.contributor.author
Walish, Joseph J.
dc.contributor.author
Zhao, Yanchuan
dc.contributor.author
George, Christy
dc.contributor.author
Yang, Chen
dc.contributor.author
Swager, Timothy M.
dc.contributor.author
Griffin, Robert G.
dc.contributor.author
Mathies, Guinevere
dc.date.accessioned
2018-11-21T11:41:15Z
dc.date.available
2018-11-09T05:11:52Z
dc.date.available
2018-11-21T11:41:15Z
dc.date.issued
2018-10-21
dc.identifier.issn
1463-9084
dc.identifier.issn
1463-9076
dc.identifier.other
10.1039/c8cp05236k
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/302295
dc.identifier.doi
10.3929/ethz-b-000302295
dc.description.abstract
The chemical structure of polarizing agents critically determines the efficiency of dynamic nuclear polarization (DNP). For cross-effect DNP, biradicals are the polarizing agents of choice and the interaction and relative orientation of the two unpaired electrons should be optimal. Both parameters are affected by the molecular structure of the biradical in the frozen glassy matrix that is typically used for DNP/MAS NMR and likely differs from the structure observed with X-ray crystallography. We have determined the conformations of six bis-nitroxide polarizing agents, including the highly efficient AMUPol, in their DNP matrix with EPR spectroscopy at 9.7 GHz, 140 GHz, and 275 GHz. The multi-frequency approach in combination with an advanced fitting routine allows us to reliably extract the interaction and relative orientation of the nitroxide moieties. We compare the structures of six bis-nitroxides to their DNP performance at 500 MHz/330 GHz.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Conformation of bis-nitroxide polarizing agents by multi-frequency EPR spectroscopy
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2018-09-24
ethz.journal.title
Physical Chemistry Chemical Physics
ethz.journal.volume
20
en_US
ethz.journal.issue
39
en_US
ethz.journal.abbreviated
Phys. Chem. Chem. Phys.
ethz.pages.start
25506
en_US
ethz.pages.end
25517
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03810 - Jeschke, Gunnar / Jeschke, Gunnar
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03810 - Jeschke, Gunnar / Jeschke, Gunnar
ethz.relation.isReferencedBy
10.3929/ethz-b-000408055
ethz.date.deposited
2018-11-09T05:11:56Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-11-21T11:41:29Z
ethz.rosetta.lastUpdated
2020-02-15T15:59:40Z
ethz.rosetta.versionExported
true
ethz.COinS
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