Mobility of spin probes in quaternized poly(4-vinylpyridine) membranes

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Mobility of spin probes in quaternized poly(4-vinylpyridine) membranes"


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ABSTRACT The mobility of nonionic and anionic spin probes in water-containing quaternized poly(4-vinylpyridine) membranes was investigated by means of an electron spin resonance (ESR)


technique. Poly(4-vinylpyridine) was quaternized and crosslinked by dibromoalkane Br(CH2)_n_Br (_n_=4, 6, 8, 10), and the effects of the side alkyl chain length were studied. Three spin


probes, 2,2,4,4-tetramethyl-1,2,3,4-tetrahydro-γ-carboline-3-oxyl (SPII), 2,2,6,6-tetramethyl-1-piperidinyloxy (SPIV), and sodium 2,2,5,5-tetramethyl-1-pyrrolidinyloxy-3-carboxylate (ASPI),


were used. In the temperature region examined, the side methylene chain length had no effect on the mobility of SPII and SPIV, but a little effect for ASPI. This suggests that the ASPI can


monitor the mobility of the side alkyl chain. In addition, the effects of water on the mobility of the spin probes were investigated. The mobility of the spin probes was much greater in the


membrane containing 30 wt% water than in that containing 3 wt% water, and the polarity around the probes was larger in the former than in the latter membrane. From this, as pointed out in


our previous papers on nylon 6/spin probe systems, the effects of water are divided into (1) the effects on the mobilities of the polymer chains and probe molecules, and (2) the effects on


the microenvironment around the spin probes. SIMILAR CONTENT BEING VIEWED BY OTHERS EFFECT OF CROSSLINK-INDUCED HETEROGENEITIES ON THE TRANSPORT AND DEFORMATION BEHAVIOR OF HYDROPHILIC IONIC


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2020 STABILIZATION OF SUPRAMOLECULAR MEMBRANE PROTEIN–LIPID BILAYER ASSEMBLIES THROUGH IMMOBILIZATION IN A CRYSTALLINE EXOSKELETON Article Open access 13 April 2021 ARTICLE PDF REFERENCES *


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U. Volkov, and N. N. Korst, _Chem. Phys. Lett._, 12, 103 (1971). * K. Hamada, T. Iijima, and R. McGregor, _Polym. J._, 19, 709 (1987). Download references AUTHOR INFORMATION AUTHORS AND


AFFILIATIONS * Department of Polymer Science, Tokyo Institute of Technology, Yoshihiko Makino, Kunihiro Hamada & Toshiro Iijima Authors * Yoshihiko Makino View author publications You


can also search for this author inPubMed Google Scholar * Kunihiro Hamada View author publications You can also search for this author inPubMed Google Scholar * Toshiro Iijima View author


publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Makino, Y., Hamada, K. &


Iijima, T. Mobility of Spin Probes in Quaternized Poly(4-vinylpyridine) Membranes. _Polym J_ 19, 737–745 (1987). https://doi.org/10.1295/polymj.19.737 Download citation * Issue Date: 01 June


1987 * DOI: https://doi.org/10.1295/polymj.19.737 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link


is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * Spin Probe * Nitroxide * Poly(4-vinylpyridine) *


Molecular Motion * Water * ESR


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