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volume 13 issue 21 pages 3829

Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy

E M Zubanova 1
Sergei V. Kostjuk 2, 3, 4
Petr S. Timashev 1, 3, 5
Yury A. Rochev 3, 6
Publication typeJournal Article
Publication date2021-11-05
scimago Q1
wos Q1
SJR0.918
CiteScore9.7
Impact factor4.9
ISSN20734360
General Chemistry
Polymers and Plastics
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 fast-moving 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 denser.

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GOST Copy
Zubanova E. M. et al. Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy // Polymers. 2021. Vol. 13. No. 21. p. 3829.
GOST all authors (up to 50) Copy
Zubanova E. M., Kostjuk S. V., Timashev P. S., Rochev Y. A., Kokorin A. I., Melnikov M. Y., Golubeva E. N. Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy // Polymers. 2021. Vol. 13. No. 21. p. 3829.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.3390/polym13213829
UR - https://doi.org/10.3390/polym13213829
TI - Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy
T2 - Polymers
AU - Zubanova, E M
AU - Kostjuk, Sergei V.
AU - Timashev, Petr S.
AU - Rochev, Yury A.
AU - Kokorin, Alexander I.
AU - Melnikov, Mikhail Y.
AU - Golubeva, Elena N.
PY - 2021
DA - 2021/11/05
PB - MDPI
SP - 3829
IS - 21
VL - 13
PMID - 34771385
SN - 2073-4360
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2021_Zubanova,
author = {E M Zubanova and Sergei V. Kostjuk and Petr S. Timashev and Yury A. Rochev and Alexander I. Kokorin and Mikhail Y. Melnikov and Elena N. Golubeva},
title = {Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy},
journal = {Polymers},
year = {2021},
volume = {13},
publisher = {MDPI},
month = {nov},
url = {https://doi.org/10.3390/polym13213829},
number = {21},
pages = {3829},
doi = {10.3390/polym13213829}
}
MLA
Cite this
MLA Copy
Zubanova, E. M., et al. “Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy.” Polymers, vol. 13, no. 21, Nov. 2021, p. 3829. https://doi.org/10.3390/polym13213829.