Inherent Microporosity and Photostability of Fluoroacrylic Polymer Films Studied by Electron Paramagnetic Resonance of Nitroxide Spin Probes

Inherent Microporosity and Photostability of Fluoroacrylic Polymer Films Studied by Electron Paramagnetic Resonance of Nitroxide Spin Probes Full article

Journal

Applied Magnetic Resonance
ISSN: 0937-9347 , E-ISSN: 1613-7507

Output data

Year: 2015, Volume: 46, Number: 5, Pages: 523-540 Pages count : DOI: 10.1007/s00723-014-0640-5

Authors

Sheveleva A. M. ^1,2 , Shundrina I. K. ³ , Veber S. L. ^1,2 , Buhtojarova A. D. ³ , Russkih V. V. ³ , Shelkovnikov V. V. ³ , Fedin M. V. ^1,2 , Bagryanskaya E. G. ^1,2,3

Affiliations

1	(Данные Web of science) RAS, SB, Int Tomog Ctr, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, Novosibirsk 630090, Russia
3	(Данные Web of science) RAS, SB, NN Vorozhtsov Novosibirsk Inst Organ Chem, Novosibirsk 630090, Russia

Efficient and straightforward methods for characterization of polymers with inherent microporosity are demanded in their targeted design for particular applications. Among critical parameters to be obtained are the size of the pores and polymer stability against photoirradiation. Herewith, we demonstrate the efficiency of electron paramagnetic resonance (EPR) spectroscopy applied to this task. We use stable nitroxide radicals (2,2,6,6-tetramethylpyperidine- 1 -oxyl) (TEMPO) as reporter spin probes for EPR and investigate a series of perspective polymers with inherent microporosity developed for pressure sensitive paints (PSP), namely, poly(1, 1, 1,3,3,3-hexafluoroisopropylmethacrylate-co-2,2,3,3,4,4,4-heptafluorobutyl methacrylate) (FIB), its two modifications poly(1,1,1,3,3,3-hexafluoroisopropylmet hacrylate-co-2,2,3, 3,4,4,4-heptafluorobutylmethacryl ate-co- 1 -(4-(4-chloro-2, 3,5,6-tetrafluorophenyl)piperazin- 1 -yl)prop-2-en- 1-one) (NS4) and poly( 1,1,1,3, 3, 3 -hexafluoroisopropylmethacrylate-co-2,2, 3, 3,4,4,4-heptafluorobutylmethacrylate-co- 1 -(4(4-tert-butylphenylsulfonyl)piperazin- 1 -yl)prop-2-en- 1-one) (NS 5), as well as poly(1 -trimethylsilyl- 1 -propyne) (PTMSP) and poly( 1, 1,2,2-perfluorooctylmethacry late) (PFOMA). Nitroxides were incorporated into the pores of the polymers postsynthetically via a gas-phase sorption, and the mobility of nitroxides tracked by EPR yielded information on the pore sizes and polymer degradation under ultraviolet light. The conclusions obtained by EPR have been supported by a variety of other techniques, thus demonstrating EPR to be a very convenient tool for express analysis of porous polymers.

Sheveleva A.M. , Shundrina I.K. , Veber S.L. , Buhtojarova A.D. , Russkih V.V. , Shelkovnikov V.V. , Fedin M.V. , Bagryanskaya E.G.
Inherent Microporosity and Photostability of Fluoroacrylic Polymer Films Studied by Electron Paramagnetic Resonance of Nitroxide Spin Probes
Applied Magnetic Resonance. 2015. V.46. N5. P.523-540. DOI: 10.1007/s00723-014-0640-5 WOS Scopus РИНЦ

Published online:	Jan 4, 2015
Published print:	May 1, 2015

Web of science	WOS:000353464200004
Scopus	2-s2.0-84940009020
Elibrary	24939172
OpenAlex	W2065164739