The Relationship between the Structure of Nitroxyl Radicals and Their Localization In Solutions of Thermoresposive Polymers

E. M. Zubanova; Зубанова Е. М.; D. A. Rubtsov; Рубцов Д. А.; E. N. Golubeva; Голубева Е. Н.

doi:10.31857/S0207401X23070191

The Relationship between the Structure of Nitroxyl Radicals and Their Localization In Solutions of Thermoresposive Polymers

Authors: Zubanova E.M.¹, Rubtsov D.A.¹, Golubeva E.N.¹
Affiliations:
1. Moscow State University
Issue: Vol 42, No 7 (2023)
Pages: 10-16
Section: XXXIV СИМПОЗИУМ “СОВРЕМЕННАЯ ХИМИЧЕСКАЯ ФИЗИКА” (СЕНТЯБРЬ 2022 г., ТУАПСЕ)
URL: https://cardiosomatics.orscience.ru/0207-401X/article/view/674847
DOI: https://doi.org/10.31857/S0207401X23070191
EDN: https://elibrary.ru/YGQTXS
ID: 674847

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Abstract
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Abstract

Electron paramagnetic resonance spectroscopy in the framework of the spin probe technique is applied to estimate the effect of the structure of molecules as an example of nitroxyl radicals on their localization in aqueous solutions of thermoresponsive poly-N-isopropylacrylamide during the coil-to-globule phase transition. It is shown that the small hydrophobic 4-hydroxybenzoate-TEMPO probe is almost completely localized in the globule formed during the phase transition, while the large probe containing a long alkyl tail (methyl 5-doxyl stearate) does not enter the compact polymer globule.

Keywords

thermoresponsive polymers, nitroxyl radicals, coil-to-globule transition, electron paramagnetic resonance spectroscopy

References

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