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https://elib.bsu.by/handle/123456789/288431| Title: | Inhomogeneities in pnipam aqueous solutions: The inside view by spin probe epr spectroscopy |
| Authors: | Zubanova, E.M. Kostjuk, S.V. Rochev, Yu.A. Kokorin, A.I. Melnikov, V.Ya. Golubeva, E.N. |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Химия ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
| Issue Date: | 2021 |
| Publisher: | MDPI |
| Citation: | Polym 2021;13(21) |
| Abstract: | Coil to globule transition in poly(N-isopropylacrylamide) aqueous solutions was studied using spin probe continuous-wave electronic paramagnetic resonance (CW EPR) spectroscopy with an amphiphilic TEMPO radical as a guest molecule. Using Cu(II) ions as the “quencher” for fastmoving radicals in the liquid phase allowed obtaining the individual spectra of TEMPO radicals in polymer globule and observing inhomogeneities in solutions before globule collapsing. EPR spectra simulations confirm the formation of molten globules at the first step with further collapsing and water molecules coming out of the globule, making it de |
| URI: | https://elib.bsu.by/handle/123456789/288431 |
| DOI: | 10.3390/polym13213829 |
| Scopus: | 85118699689 |
| Sponsorship: | Funding: This research was supported by the Russian Foundation for Basic Research (Grant 20-02-00712). Acknowledgments: This work was partially performed using MSU equipment provided by the M.V. Lomonosov Moscow State University Program of Development. The authors are grateful to A.V. Bogdanov for useful discussions and Evgenii Ksendzov for his help in the synthesis and characterization of poly(N-isopropylacrylamide) samples. |
| Licence: | info:eu-repo/semantics/openAccess |
| Appears in Collections: | Статьи сотрудников НИИ ФХП |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| polymers-13-03829.pdf | 3,29 MB | Adobe PDF | View/Open |
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