Electric Double Layer Action of High-quality Ionic Liquid Crystal Thin Films

• Haruka Komatsu

  Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 , Japan

• Miyuki Tanaka

  Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 , Japan

• Kenichi Kaminaga

  Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 , Japan

• Shingo Maruyama

  Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 , Japan

• Yuji Matsumoto

  Department of Applied Chemistry, School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 , Japan

Abstract

We successfully prepared high-quality vacuum-deposited thin films of ionic liquid crystal 1-hexadecyl-3-methylimidazolium hexafluorophosphate ([C16mim][PF6]). The key point is to anneal the films in vacuum at the liquid crystal temperature of [C16mim][PF6], thereby much improving their crystallinity, surface smoothness, and air-exposure stability. The differential capacitance measurement of such a high-quality thin film revealed that an electric double layer was formed in the liquid crystalline phase, while it behaves like a normal dielectric in the crystal phase.

Journal

• Chemistry Letters

  Chemistry Letters 51 (2), 162-165, 2021-12-29

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360854108069152128
• NII Article ID: 130008161618
• DOI: 10.1246/cl.210692
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/51/2/162/56301089/cl.210692.pdf
• Data Source:
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