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S²XAFS: A new experimental setup for time-resolved X-ray absorption fine structure spectroscopy in a 'single shot'

  • A newly developed EXAFS setup is presented. It enables both time- and spatially resolved EXAFS information simul-taneously in a single shot. First tests of this setup were performed at the BAMline @ BESSY-II (Berlin, Germany). A primary broadband beam generated by a filter/X-ray-mirror combination passes through the sample and is then dif-fracted by a convexly bent Si (111) crystal. This results in a divergent beam which is collected by an area sensitive detector, in a θ-2θ-geometry. Beside tests on metal foils the first in situ measurements were successfully carried out. The case-study deals with research on Zn-based Metal-Organic-Frameworks (MOF) with medical/pharmaceutical applications. This hot topic of MOFs research concerns drug delivery and encapsulation of therapeutically relevant proteins (e.g. BSA). Questions like how does a certain protein influences the coordination of Zn can be answered with this new setup. We were able to track structural changes within a 1s timeA newly developed EXAFS setup is presented. It enables both time- and spatially resolved EXAFS information simul-taneously in a single shot. First tests of this setup were performed at the BAMline @ BESSY-II (Berlin, Germany). A primary broadband beam generated by a filter/X-ray-mirror combination passes through the sample and is then dif-fracted by a convexly bent Si (111) crystal. This results in a divergent beam which is collected by an area sensitive detector, in a θ-2θ-geometry. Beside tests on metal foils the first in situ measurements were successfully carried out. The case-study deals with research on Zn-based Metal-Organic-Frameworks (MOF) with medical/pharmaceutical applications. This hot topic of MOFs research concerns drug delivery and encapsulation of therapeutically relevant proteins (e.g. BSA). Questions like how does a certain protein influences the coordination of Zn can be answered with this new setup. We were able to track structural changes within a 1s time resolution.zeige mehrzeige weniger

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  • 170529_Poster_CSIXL_S2XAFS.pdf
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Metadaten
Autoren/innen:Anicó Kulow
Koautoren/innen:Ana Guilherme Buzanich, Martin Radtke, Uwe Reinholz, Heinrich Riesemeier, Christina Streli
Dokumenttyp:Posterpräsentation
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2017
Organisationseinheit der BAM:1 Analytische Chemie; Referenzmaterialien
1 Analytische Chemie; Referenzmaterialien / 1.3 Strukturanalytik
DDC-Klassifikation:Naturwissenschaften und Mathematik / Chemie / Analytische Chemie
Freie Schlagwörter:Dispersive; In-situ measurement; Time-resolved; XAFS
Themenfelder/Aktivitätsfelder der BAM:Analytical Sciences
Analytical Sciences / Zerstörungsfreie Prüfung und Spektroskopie
Veranstaltung:CSI XL
Veranstaltungsort:Pisa, Italy
Beginndatum der Veranstaltung:11.06.2017
Enddatum der Veranstaltung:16.06.2017
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.07.2017
Referierte Publikation:Nein