Influence of Microwave Power on EPR Signal of Melanin Radical and Copper(II) Ions in DOPA-Melanin Complexes |
| L. Najder-Kozdrowskaa, B. Pilawab, A.B. Więckowskia, E. Buszmanc and D. Wrześniokc
aDivision of Spectroscopy of Functional Materials, Institute of Physics, Faculty of Physics and Astronomy, University of Zielona Góra, Z. Szafrana 4a, 65-516 Zielona Góra, Poland bDepartment of Biophysics, School of Pharmacy, Medical University of Silesia, Sosnowiec, Poland cDepartment of Pharmaceutical Chemistry, School of Pharmacy, Medical University of Silesia, Sosnowiec, Poland |
| Received: November 26, 2012; in final form: April 4, 2013 |
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| Electron paramagnetic resonance spectroscopy EPR was used for examination of microwave saturation in DOPA-melanin complexes with kanamycin and Cu(II) ions. The fast spin-lattice relaxation processes take place in system of paramagnetic metal ions. EPR signal of melanin radical saturated with growing of microwave power used during measurements. After adding Cu(II) ions a shortening of relaxation time is observed for EPR signal of melanin radical. |
DOI: 10.12693/APhysPolA.124.112 PACS numbers: 76.30.Rn, 87.80.Lg, 87.64.kh |