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Abstracts
The mono- and biradical forms of DOPA-melanin (DOPA-eumelanin) were studied by EPR spectroscopy in 100-300 K temperature range. The existence of triplet states in DOPA-melanin was proved. The analysis of EPR spectra has shown that in DOPA-melanin and its complexes with kanamycin and Cu^{2+} ions, two kinds of paramagnetic centres exist. The first of them are in doublet ground state with spin S = 1/2 and they obey the Curie law. The paramagnetic centres of the second group are in thermally excited triplet state with spin S = 1 and in this case the Curie law is not fulfilled.
Journal
Year
Volume
Issue
Pages
613-618
Physical description
Dates
published
2010-10
received
2010-02-03
(unknown)
2010-09-09
Contributors
author
- Division of Spectroscopy of Functional Materials, Institute of Physics, Faculty of Physics and Astronomy University of Zielona Góra, Szafrana 4a, 65-516 Zielona Góra, Poland
author
- Department of Biophysics, Medical University of Silesia, Sosnowiec, Poland
author
- Department of Pharmaceutical Chemistry, Medical University of Silesia, Sosnowiec, Poland
author
- Division of Spectroscopy of Functional Materials, Institute of Physics, Faculty of Physics and Astronomy University of Zielona Góra, Szafrana 4a, 65-516 Zielona Góra, Poland
author
- Department of Instrumental Analysis School of Pharmacy, Medical University of Silesia, Sosnowiec, Poland
author
- Department of Pharmaceutical Chemistry, Medical University of Silesia, Sosnowiec, Poland
author
- Division of Spectroscopy of Functional Materials, Institute of Physics, Faculty of Physics and Astronomy University of Zielona Góra, Szafrana 4a, 65-516 Zielona Góra, Poland
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n415kz