Photo-CIDNP MAS NMR beyond the T1 limit by fast cycles of polarization extinction and polarization generation

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2008
Autor:innen
Daviso, Eugenio
Diller, Anna
Alia, Alia
Matysik, Jörg
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Journal of Magnetic Resonance. Elsevier. 2008, 190(1), pp. 43-51. ISSN 1090-7807. eISSN 1096-0856. Available under: doi: 10.1016/j.jmr.2007.10.001
Zusammenfassung

In nanosecond-laser flash photo-CIDNP MAS NMR, polarization generation (PG) proceeds much faster than longitudinal spin relaxation. With a nanosecond-laser setup linked to the NMR console the repetition time of the experiment is then limited by the minimum recycle delay of the NMR spectrometer and the maximum repetition rate of laser flashes. These limits can only be reached if polarization left after the NMR experiment is completely canceled before the next laser flash. We introduce a presaturation pulse sequence, based on three (π/2) 13C pulses and optimized timing and phase cycling that allows for such efficient polarization extinction (PE). The technique is demonstrated on selectively isotope labeled bacterial reaction centers (RCs) of Rhodobacter (Rb.) sphaeroides wildtype (WT). High-quality 13C photo-CIDNP MAS NMR spectra are obtained using cycle rates up to 4 Hz. The PE–PG strategy proposed here provides a general experimental scheme for reduction of measurement time in magnetic resonance experiments based on fast PG.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
540 Chemie
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690DAVISO, Eugenio, Anna DILLER, Alia ALIA, Jörg MATYSIK, Gunnar JESCHKE, 2008. Photo-CIDNP MAS NMR beyond the T1 limit by fast cycles of polarization extinction and polarization generation. In: Journal of Magnetic Resonance. Elsevier. 2008, 190(1), pp. 43-51. ISSN 1090-7807. eISSN 1096-0856. Available under: doi: 10.1016/j.jmr.2007.10.001
BibTex
@article{Daviso2008-01Photo-58676,
  year={2008},
  doi={10.1016/j.jmr.2007.10.001},
  title={Photo-CIDNP MAS NMR beyond the T<sub>1</sub> limit by fast cycles of polarization extinction and polarization generation},
  number={1},
  volume={190},
  issn={1090-7807},
  journal={Journal of Magnetic Resonance},
  pages={43--51},
  author={Daviso, Eugenio and Diller, Anna and Alia, Alia and Matysik, Jörg and Jeschke, Gunnar}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/58676">
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dc:creator>Jeschke, Gunnar</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-09-22T07:34:32Z</dcterms:available>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Alia, Alia</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dc:creator>Daviso, Eugenio</dc:creator>
    <dc:contributor>Alia, Alia</dc:contributor>
    <dc:language>eng</dc:language>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-09-22T07:34:32Z</dc:date>
    <dc:contributor>Matysik, Jörg</dc:contributor>
    <dc:contributor>Diller, Anna</dc:contributor>
    <dc:creator>Diller, Anna</dc:creator>
    <dc:contributor>Jeschke, Gunnar</dc:contributor>
    <dcterms:issued>2008-01</dcterms:issued>
    <dcterms:title>Photo-CIDNP MAS NMR beyond the T&lt;sub&gt;1&lt;/sub&gt; limit by fast cycles of polarization extinction and polarization generation</dcterms:title>
    <dcterms:abstract xml:lang="eng">In nanosecond-laser flash photo-CIDNP MAS NMR, polarization generation (PG) proceeds much faster than longitudinal spin relaxation. With a nanosecond-laser setup linked to the NMR console the repetition time of the experiment is then limited by the minimum recycle delay of the NMR spectrometer and the maximum repetition rate of laser flashes. These limits can only be reached if polarization left after the NMR experiment is completely canceled before the next laser flash. We introduce a presaturation pulse sequence, based on three (π/2) &lt;sup&gt;13&lt;/sup&gt;C pulses and optimized timing and phase cycling that allows for such efficient polarization extinction (PE). The technique is demonstrated on selectively isotope labeled bacterial reaction centers (RCs) of Rhodobacter (Rb.) sphaeroides wildtype (WT). High-quality &lt;sup&gt;13&lt;/sup&gt;C photo-CIDNP MAS NMR spectra are obtained using cycle rates up to 4 Hz. The PE–PG strategy proposed here provides a general experimental scheme for reduction of measurement time in magnetic resonance experiments based on fast PG.</dcterms:abstract>
    <dc:contributor>Daviso, Eugenio</dc:contributor>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/58676"/>
    <dc:creator>Matysik, Jörg</dc:creator>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Ja
Diese Publikation teilen