caa a22 4500 605546061 CHVBK 20210128100938.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00723-014-0640-5 doi (NATIONALLICENCE)springer-10.1007/s00723-014-0640-5 Inherent Microporosity and Photostability of Fluoroacrylic Polymer Films Studied by Electron Paramagnetic Resonance of Nitroxide Spin Probes [Elektronische Daten] [A. Sheveleva, I. Shundrina, S. Veber, A. Buhtojarova, V. Russkih, V. Shelkovnikov, M. Fedin, E. Bagryanskaya] 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-heptafluorobutylmethacrylate) (FIB), its two modifications poly(1,1,1,3,3,3-hexafluoroisopropylmethacrylate-co-2,2,3,3,4,4,4-heptafluorobutylmethacrylate-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) (NS5), as well as poly(1-trimethylsilyl-1-propyne) (PTMSP) and poly(1,1,2,2-perfluorooctylmethacrylate) (PFOMA). Nitroxides were incorporated into the pores of the polymers post-synthetically 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. Springer-Verlag Wien, 2015 Sheveleva A. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut Shundrina I. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut Veber S. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut Buhtojarova A. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut Russkih V. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut Shelkovnikov V. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut Fedin M. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut Bagryanskaya E. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut Applied Magnetic Resonance Springer Vienna 46/5(2015-05-01), 523-540 0937-9347 46:5<523 2015 46 723 https://doi.org/10.1007/s00723-014-0640-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00723-014-0640-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sheveleva A. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Shundrina I. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Veber S. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Buhtojarova A. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Russkih V. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Shelkovnikov V. N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Fedin M. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Bagryanskaya E. International Tomography Center SB RAS, 630090, Novosibirsk, Russia aut NATIONALLICENCE 773 0- Applied Magnetic Resonance Springer Vienna 46/5(2015-05-01), 523-540 0937-9347 46:5<523 2015 46 723