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Polymers, volume 13, issue 21, pages 3829

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

Zubanova E M ¹

Kostjuk Sergei V. ^{2, 3, 4}

Timashev Petr S. ^{1, 3, 5}

Rochev Yury A. ^{3, 6}

Kokorin Alexander I. ^{5, 7}

Melnikov Mikhail Y. ¹

Golubeva Elena N. ¹

Hide authors affiliations Show authors affiliations: 7 affiliations

Faculty of Chemistry, Lomonosov Moscow State University, 1-3, Leninskie gory, 119991 Moscow, Russia |

Research Institute for Physical Chemical Problems of the Belarusian State University, 14, Leningradskaya str., 220030 Minsk, Belarus |

Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, 8-2, Trubetskaya str., 119992 Moscow, Russia |

⁴

Faculty of Chemistry, Belarusian State University, 220006 Minsk, Belarus |

⁵

N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosygin st. 4, 119991 Moscow, Russia |

⁶

National University of Ireland Galway, University Road, H91 TK33 Galway, Ireland |

⁷

Plekhanov Russian University of Economics, Stremyannyi per., 117997 Moscow, Russia |

Publication type: Journal Article

Publication date: 2021-11-05

Multidisciplinary Digital Publishing Institute (MDPI)

Journal: Polymers

Quartile SCImago

Quartile WOS

Impact factor: 5

ISSN: 20734360

DOI: 10.3390/polym13213829

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PubMed ID: 34771385

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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Polymers	Polymers, 1, 33.33% Polymers 1 publication, 33.33%
Russian Journal of Physical Chemistry B	Russian Journal of Physical Chemistry B, 1, 33.33% Russian Journal of Physical Chemistry B 1 publication, 33.33%
Technologies	Technologies, 1, 33.33% Technologies 1 publication, 33.33%
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Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 1, 33.33% Multidisciplinary Digital Publishing Institute (MDPI) 1 publication, 33.33%
Pleiades Publishing	Pleiades Publishing, 1, 33.33% Pleiades Publishing 1 publication, 33.33%
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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.

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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 |

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RIS Copy

TY - JOUR

DO - 10.3390/polym13213829

UR - https://doi.org/10.3390%2Fpolym13213829

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

T2 - Polymers

AU - Rochev, Yury A.

AU - Kokorin, Alexander I.

AU - Golubeva, Elena N.

AU - Zubanova, E M

AU - Kostjuk, Sergei V.

AU - Timashev, Petr S.

AU - Melnikov, Mikhail Y.

PY - 2021

DA - 2021/11/05 00:00:00

PB - Multidisciplinary Digital Publishing Institute (MDPI)

SP - 3829

IS - 21

VL - 13

PMID - 34771385

SN - 2073-4360

ER -

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@article{2021_Zubanova,

author = {Yury A. Rochev and Alexander I. Kokorin and Elena N. Golubeva and E M Zubanova and Sergei V. Kostjuk and Petr S. Timashev and Mikhail Y. Melnikov},

title = {Inhomogeneities in PNIPAM Aqueous Solutions: The Inside View by Spin Probe EPR Spectroscopy},

journal = {Polymers},

year = {2021},

volume = {13},

publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},

month = {nov},

url = {https://doi.org/10.3390%2Fpolym13213829},

number = {21},

pages = {3829},

doi = {10.3390/polym13213829}

}

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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%2Fpolym13213829.

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Publisher

Multidisciplinary Digital Publishing Institute (MDPI)

Journal

Polymers

Quartile SCImago

Quartile WOS

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ISSN

20734360 (Electronic)

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Supercritical Fluid Center

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