Recent progress in synchrotron-based frequency-domain Fourier-transform THz-EPR

Joscha Nehrkorn; Karsten Holldack; Robert Bittl; Alexander Schnegg

doi:10.1016/j.jmr.2017.04.001

Recent progress in synchrotron-based frequency-domain Fourier-transform THz-EPR

J Magn Reson. 2017 Jul:280:10-19. doi: 10.1016/j.jmr.2017.04.001.

Authors

Joscha Nehrkorn¹, Karsten Holldack², Robert Bittl³, Alexander Schnegg⁴

Affiliations

¹ Berlin Joint EPR Lab, Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraβe 5, 12489 Berlin, Germany; Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, United States.
² Institute Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany.
³ Berlin Joint EPR Lab, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
⁴ Berlin Joint EPR Lab, Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraβe 5, 12489 Berlin, Germany. Electronic address: alexander.schnegg@helmholtz-berlin.de.

PMID: 28579095
DOI: 10.1016/j.jmr.2017.04.001

Abstract

We describe frequency-domain Fourier-transform THz-EPR as a method to assign spin-coupling parameters of high-spin (S>1/2) systems with very large zero-field splittings. The instrumental foundations of synchrotron-based FD-FT THz-EPR are presented, alongside with a discussion of frequency-domain EPR simulation routines. The capabilities of this approach is demonstrated for selected mono- and multinuclear HS systems. Finally, we discuss remaining challenges and give an outlook on the future prospects of the technique.

Keywords: Frequency-domain EPR spectroscopy; High-spin transition-metal ion; Zero-field splitting.

Publication types

Research Support, Non-U.S. Gov't