Bruker CW X-band ECS-EMXplus EPR Spectrometer
- Resonator for routine EPR (ER 4119HS)
- Liquid helium temperature control to under 4 K
- Liquid nitrogen temperature control from 80 to 500 K
- Good for dosimetry, detecting free radicals, radical trapping, high spin metal complexes
- Resonator for aqueous samples (ER4123D), with optical opening for light irradiation and TPX capillaries for N2/O2 relaxation studies
The EPR was upgraded to EMXplus from ECS in 2014 with all new electronics.
What is EPR?
EPR (Electron Paramagnetic Resonance) is a spectroscopic technique that detects unpaired electrons. It is also called ESR, electron spin resonance, when used for organic radicals. Unpaired electronics are found in transition metals, reactive intermediates, photo-activated states, defects in materials, food stuffs and so on.
EPR is much more sensitive than NMR and techniques such as spin trapping or spin labelling can be used to broaden the application of EPR
- "Formation of environmentally persistent free radicals from the heterogeneous reaction of ozone and polycyclic aromatic compounds" Borrowman, C.K., Zhou, S., Burrow, T.E., Abbatt, J.P.D. (2016) Physical Chemistry Chemical Physics, 18 (1), pp. 205-212 DOI: 10.1039/c5cp05606c