EPR spectroscopy of common nitric oxide - spin trap complexes |
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Authors: | Nedeianu Saviana Páli Tibor |
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Institution: | Institute of Biophysics, Biological Research Centre Szeged, P.O. Box 521, 6701 Szeged, Hungary. |
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Abstract: | Two commonly used hydrophobic and hydrophilic spin traps for NO, namely Fe2+(DETC)(2)and Fe2+(MGD)(2), respectively, were analyzed via EPR spectroscopy. EPR spectra of trapped NO, together with field position standards, were recorded both in the frozen state and at room temperature. We present a detailed characterization of the EPR spectra of the above paramagnetic NO complexes, concerning g-value, hyperfine splitting and linewidths. This study also provides spectroscopic data required to develop a quantitative and sensitive detection system for nitric oxide both in hydrophobic and hydrophilic aqueous media. |
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