Center for EPR Spectroscopy.

Electron Paramagnetic Resonance (EPR) spectroscopy, also known as Electron Spin Resonance, is a method that allows obtaining information about the structure and properties of systems containing unpaired electrons (paramagnetic systems). Unpaired electrons often play a crucial role in the catalytic, magnetic, chemical, and physical properties of substances.

EPR spectroscopy enables the determination of the local environment of unpaired electrons in materials. With EPR, the following are investigated: free radicals and defects induced in substances as a result of external influences (irradiation with ionizing radiation, thermal treatment, etc.); paramagnetic ions of transition metals; stable radicals in chemistry and biology; short-lived radicals, and more. The application range of EPR spectroscopy is extensive, not only involving the study of solids but also liquids and gases. It is characterized by high sensitivity, allowing the detection of paramagnetic particles with concentrations of 10^-11-10^-12 M. The method is non-destructive. EPR spectroscopy is also used for quantitative measurements in dosimetry and dating.

In our group, besides characterizing catalytic materials, EPR spectroscopy is utilized for identifying irradiated food products, determining the antioxidant properties of natural products, and dosimetry.

Leader:

Yordanka Karakirova
Associate Professor, PhD
Phone: (+359 2) 979 35 91
Email: daniepr@ic.bas.bg
Room: 209A

Scientific Staff:

Katerina Aleksieva
Associate Professor, PhD
Phone: (+359 2) 979 39 17; (+359 2) 979 35 91
Email: kati@ic.bas.bg
Room: 36

 

Ralitsa Mladenova
Senior Assistant Professor, PhD
Phone: (+359 2) 979 35 91
Email: ralitsa@ic.bas.bg
Room: 209A