Conversion of a Single-Frequency X-Band EPR Spectrometer into a Broadband Multi-Frequency 0.1–18 GHz Instrument for Analysis of Complex Molecular Spin Hamiltonians

Hagen, W.R.

doi:10.3390/molecules28135281

Conversion of a Single-Frequency X-Band EPR Spectrometer into a Broadband Multi-Frequency 0.1–18 GHz Instrument for Analysis of Complex Molecular Spin Hamiltonians

Title

Conversion of a Single-Frequency X-Band EPR Spectrometer into a Broadband Multi-Frequency 0.1–18 GHz Instrument for Analysis of Complex Molecular Spin Hamiltonians

Author

Hagen, W.R. (TU Delft BT/Biocatalysis)

Date

2023

Abstract

A broadband EPR spectrometer is an instrument that can be tuned to many microwave frequencies over several octaves. Its purpose is the collection of multi-frequency data, whose global analysis affords interpretation of complex spectra by means of deconvolution of frequency-dependent and frequency-independent interaction terms. Such spectra are commonly encountered, for example, from transition-metal complexes and metalloproteins. In a series of previous papers, I have described the development of broadband EPR spectrometers around a vector network analyzer. The present study reports on my endeavor to start from an existing X-band spectrometer and to reversibly re-build it into a broadband machine, in a quest to drastically reduce design effort, building costs, and operational complexity, thus bringing broadband EPR within easy reach of a wide range of researchers.

Subject

broadband
EPR
ESR
free radicals
metal complex
metalloprotein
strip line
wire micro strip

To reference this document use:

http://resolver.tudelft.nl/uuid:c15db5a9-d825-466b-960c-7a73b6fb34ef

DOI

https://doi.org/10.3390/molecules28135281

ISSN

1420-3049

Source

Molecules: a journal of synthetic organic and natural product chemistry, 28 (13)

Part of collection

Institutional Repository