Webinar banner 27 10 2020

Investigating fast chemical reactions using the enhanced time resolution of Rapid Scan EPR (Electron Paramagnetic Resonance)

Many paramagnetic species are very reactive and short-lived and are involved in many chemical and biological reactions. This webinar will focus on how Rapid Scan EPR (Electron Paramagnetic Resonance) offers the required time resolution to explore fast reaction kinetics in order to identify species and offer insights into reaction mechanisms.
This webinar took place on October 13th 2020

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CW (Continuous Wave) EPR has traditionally been used to explore chemical reaction involving paramagnetic species such as free radicals and transition metal ions. Examples of applications are polymerization reactions, catalysis, and monitoring ROS (Reactive Oxygen Species). Often the reaction kinetics are too fast and CW EPR does not have sufficient time resolution. In this webinar we will demonstrate how Rapid Scan EPR offers the required faster time resolution to identify and monitor multiple species in the reaction. The results yield insights into the reaction mechanism as well kinetics.

What to expect

This webinar starts with an introduction into Rapid Scan EPR and its advantages over the traditional CW EPR technique. After the introduction, the time resolved Rapid Scan experiment is introduced that we will be using in our examples. Several examples of fast chemical reactions are presented that have been studied by the technique.

Key topics

  • Enhanced time resolution (< 1 ms) compared to CW EPR
  • Reaction monitoring with unprecedented time resolution
  • Capture a complete EPR spectrum in a single time slice
  • Simultaneously detect multiple species

Who should attend?

This webinar will be especially useful for EPR users working on chemical and biological reactions such as ROS, catalysis, and polymerization. It will be useful to people that wish to explore how EPR can be used in the study of free radical reactions.


Dr. Ralph Weber
Dr. Ralph Weber
EPR Applications Manager
Dr. Weber received his Ph.D. in chemistry from the University of Chicago. This was followed by postdoctoral positions at Leiden University (NL) working on ODMR and MIT working on DNP. He joined Bruker in 1989 as an application scientist and specializes in pulse and high frequency EPR and EPR imaging.
Dr. Boris Dzikovski
Dr. Boris Dzikovski
Applications Scientist
Boris Dzikovski is a co-author of over 50 publications on applications of EPR spectroscopy in chemistry, biophysics, and material science. Before joining the Bruker EPR applications team, he worked for 17 years at the National Biomedical Center for Advanced Electron Spin Resonance Technologies led by Prof. Jack H. Freed at Cornell University.