Monitoring fast chemical processes by reaction-interrupted excitation transfer (ExTra) NMR spectroscopy

Gabriel E. Wagner, Sebastian Tassoti, Simon Glanzer, Eduard Stadler, Rainer Herges, Georg Gescheidt, Klaus Zangger*

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

NMR spectroscopy is generally used to investigate molecules under equilibrium conditions. Despite recent technological and methodogical developments to study on-going reactions, tracing the fate of individual atoms during an irreversible chemical reaction is still a challenging and elaborate task. Reaction-interrupted excitation transfer (ExTra) NMR provides a selective tracking of resonances from atoms, which undergo chemical conversion. We show that reactions triggered either by rapid mixing or by photo-excitation can be conveniently followed at a sub-second time scale using standard NMR equipment. In ExTra NMR we use the selectively inverted magnetization of a selected atom to follow its conversion in the course of a fast chemical reaction. The chemical reaction has to be started within the relaxation period of an initial inverting 180° pulse. The presented protocol provides a generally applicable NMR method for reaction monitoring.

Originalspracheenglisch
Seiten (von - bis)12575-12578
Seitenumfang4
FachzeitschriftChemical Communications
Jahrgang55
Ausgabenummer83
DOIs
PublikationsstatusVeröffentlicht - 1 Jan. 2019

ASJC Scopus subject areas

  • Katalyse
  • Elektronische, optische und magnetische Materialien
  • Keramische und Verbundwerkstoffe
  • Chemie (insg.)
  • Oberflächen, Beschichtungen und Folien
  • Metalle und Legierungen
  • Werkstoffchemie

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