Abstract
A tautomeric equilibrium with proton transfer has been found for complexes of hydroxyanthraquinone dyes-aliphatic amines in low polarity solvents by UV and IR spectroscopy. The shift of this equilibrium in an external electric field has been observed by the method of electrochromism in the visible region. In a polystyrene matrix below the β-transition temperature the proton transfer is partially frozen.
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