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

Haruka Komatsu, Miyuki Tanaka, Kenichi Kaminaga, Shingo Maruyama, Yuji Matsumoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalChemistry Letters
Issue number2
Publication statusPublished - 2022 Feb


  • Electric double layer
  • Ionic liquid crystal
  • Thin film

ASJC Scopus subject areas

  • Chemistry(all)


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