|
Paramagnetic centers play a key role in a large variety of chemical, biological or electronic systems and processes, as exemplified by metal complexes, free radicals, biradicals, and valence centers. We characterise paramagnetic centers in complex systems/reactions by Electron Paramagnetic Resonance (EPR) with a new CW EPR spectrometer of Bruker, which completed the Magnetic Resonance research platform of the University of Basel.
|
|
Paramagnetic centers play a key role in a large variety of chemical, biological or electronic systems and processes, as exemplified by metal complexes, free radicals, biradicals, and valence centers. A paramagnetic center forms when a system has one or more unpaired electrons, either in a stable state or in an intermediate state generated during a reaction process. Electron Paramagnetic Resonance, EPR allows to characterize in detail paramagnetic centers, such as the metal region in various systems ranging from small complexes to proteins, supramolecular hybrid structures, radical species formed under a multitude of conditions (irradiation processes, metabolic pathways, or chemical reactions) and even to evaluate the local dynamics in complex systems via spin labeling techniques. We developed the magnetic resonance platform of the Chemistry Department of the University of Basel with an EPR spectrometer that permits the characterization of paramagnetic centers in materials in all physical states and throughout a range of temperatures from 4 K to 400 K. This spectrometer will facilitate us to shed light on the structure and dynamics of paramagnetic centers in complex systems such as enzyme-based nanoreactors, hierarchically arranged proteins networks, metal-copolymer hybrids or interfaces, or nano- and micro-functional materials.
|