Electrically Conductive Gels Prepared from Syndiotactic Polystyrene and an Ionic Liquid

Hideyuki Itagaki; Naoto Yoshida; Takumi Sano; Mayu Yokoyama; Nozomi Iba; Ryotaro Sugiyama; Masakatsu Kuroki

doi:10.1021/acsomega.9b02310

Electrically Conductive Gels Prepared from Syndiotactic Polystyrene and an Ionic Liquid

ACS Omega. 2019 Sep 18;4(14):16125-16129. doi: 10.1021/acsomega.9b02310. eCollection 2019 Oct 1.

Authors

Hideyuki Itagaki^{1

2}, Naoto Yoshida¹, Takumi Sano², Mayu Yokoyama¹, Nozomi Iba¹, Ryotaro Sugiyama¹, Masakatsu Kuroki³

Affiliations

¹ Department of Chemistry, School of Education, Shizuoka University, Shizuoka 422-8529, Japan.
² Department of Chemistry, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan.
³ R&D Laboratory, Taica Corporation, 789 Miyakami, Shimizu-ku, Shizuoka 424-0911, Japan.

Abstract

Syndiotactic polystyrene (SPS) physical gels containing a large amount of the ionic liquid 1-butylpyridinium bromide ([C₄py]Br) were systematically prepared and their physical properties were examined in detail. The gels had stable forms for a long time, having storage elastic modulus values of normal gels. They showed nearly the same values of the electrical conductivity (∼7 mS/cm) as those of the mixed solutions of [C₄py]Br, suggesting that the distribution of [C₄py]Br was uniform in these gels and that the charge transportation in these SPS gels was not interrupted by a three-dimensional network of SPS fibrils consisting of the SPS δ crystalline phases.