Imidazoline biradical spin labels with EPR spectral sensitivity to the local concentration of protons

EPR spectral sensitivity of the three biradicals of imidazoline and imidazolidine types to the local concentration of protons (pH) in aqueous solutions has been studied. Significant increase ing-factor (Δg ≈ 0.0002) and decrease in hyperfine interaction constant (ΔaN = 0.8−1.2 G) upon the protonatio...

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Veröffentlicht in:	Applied magnetic resonance 1998-12, Vol.15 (3-4), p.407-415
Hauptverfasser:	Glazachev, Yu. I., Khramtsov, V. V., Berezina, T. A., Volodarsky, L. B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aqueous solutions Fragments Glycerol-Water Imidazoline Labels Protonation Protons Spectral sensitivity Spin exchange Temperature dependence Titration
Online-Zugang:	Volltext
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