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dc.contributor.authorPump, Eva
dc.contributor.authorViger-Gravel, Jasmine
dc.contributor.authorAbou-Hamad, Edy
dc.contributor.authorSamantaray, Manoja
dc.contributor.authorHamzaoui, Bilel
dc.contributor.authorGurinov, Andrei
dc.contributor.authorAnjum, Dalaver H.
dc.contributor.authorGajan, David
dc.contributor.authorLesage, Anne
dc.contributor.authorBendjeriou-Sedjerari, Anissa
dc.contributor.authorEmsley, Lyndon
dc.contributor.authorBasset, Jean-Marie
dc.date.accessioned2017-02-09T12:55:03Z
dc.date.available2017-02-09T12:55:03Z
dc.date.issued2016-08-15
dc.identifier.citationPump E, Viger-Gravel J, Abou-Hamad E, Samantaray MK, Hamzaoui B, et al. (2017) Reactive surface organometallic complexes observed using dynamic nuclear polarization surface enhanced NMR spectroscopy. Chem Sci 8: 284–290. Available: http://dx.doi.org/10.1039/c6sc02379g.
dc.identifier.issn2041-6520
dc.identifier.issn2041-6539
dc.identifier.doi10.1039/c6sc02379g
dc.identifier.urihttp://hdl.handle.net/10754/622857
dc.description.abstractDynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) is an emerging technique that allows access to high-sensitivity NMR spectra from surfaces. However, DNP SENS usually requires the use of radicals as an exogenous source of polarization, which has so far limited applications for organometallic surface species to those that do not react with the radicals. Here we show that reactive surface species can be studied if they are immobilized inside porous materials with suitably small windows, and if bulky nitroxide bi-radicals (here TEKPol) are used as the polarization source and which cannot enter the pores. The method is demonstrated by obtaining significant DNP enhancements from highly reactive complelxes [(equivalent to Si-O-)W(Me)(5)] supported on MCM-41, and effects of pore size (6.0, 3.0 and 2.5 nm) on the performance are discussed.
dc.description.sponsorshipThis work received support from the King Abdullah University of Science and Technology (KAUST) and ERC Advanced Grant No. 320860. We thank Dr Olivier Ouari and Paul Tordo from the University of Aix-Marseille, for providing the TEKPol radical.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/SC/C6SC02379G#!divAbstract
dc.rightsThis article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/
dc.titleReactive surface organometallic complexes observed using dynamic nuclear polarization surface enhanced NMR spectroscopy
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentImaging and Characterization Core Lab
dc.identifier.journalChem. Sci.
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionInstitut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
dc.contributor.institutionInstitut de Sciences Analytiques (CNRS/ENS-Lyon/UCB-Lyon 1), Université de Lyon, Centre de RMN à Très Hauts Champs, 69100 Villeurbanne, France
kaust.personPump, Eva
kaust.personAbou-Hamad, Edy
kaust.personSamantaray, Manoja
kaust.personHamzaoui, Bilel
kaust.personGurinov, Andrei
kaust.personAnjum, Dalaver H.
kaust.personBendjeriou-Sedjerari, Anissa
kaust.personBasset, Jean-Marie
refterms.dateFOA2018-06-14T04:47:39Z


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