Mobility of Triarylmethyl Radicals in Water-Glycerol and Water-Trehalose Media
A. E. RAIZVIKH1,2, K. A. LOMANOVICH2, O. Y. ROGOZHNIKOVA2, D. V. TROUKHIN2, V. M. TORMYSHEV2, E. G. BAGRYANSKAYA2
1Novosibirsk State University, Novosibirsk, Russia
2Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: microviscosity, triarylmethyl radical, EPR
Pages: 659–665
Abstract
In the recent years, triarylmethyl radicals are widely used as spin probes and tags, so the study of their properties is of great interest. In the present work, the magnetic resonance properties of triarylmethyl radicals (FT (Finland trityl) and OX063) labeled with 13C isotope in water-glycerol and water-trehalose solutions are studied using stationary and pulsed EPR within a wide temperature range. Their magnetic resonance parameters, electron spin relaxation times and rotation correlation times at different temperatures are measured. It is shown that 13С-FT radical forms aggregates in trehalose solution, while aggregates are not observed for 13С-OX063 radical.
DOI: 10.15372/CSD2023514
EDN: LYJKEK
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