Polar switching of dipolar molecules induced by solid dispersion-to-organogel phase transition

Ryosuke Yamamoto, Nobuo Kimizuka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A lipophilic L-glutamate-derived gelator having multiple amide linkages is dissolved in liquid 1-methoxy-4-nitrobenzene (MNB) by heating. Upon cooling this solution below ca. 337K, a sol-to-gel transition occurs and the liquid MNB molecules are confined in the self-assembled gel networks. This organogel shows significant enhancement of dipolar polarization and hysteresis is observed in the polarization (P)-electric field (E) curves. The cooling of the gel to ambient temperature affords a solid dispersion phase, which does not show such enhanced dipolar polarization nor the P-E hysteresis. The electric field-induced macroscopic polarization of MNB molecules thus occurs only when they are in the liquid phase and confined in the interstitial domains of the MNB gel.

Original languageEnglish
Pages (from-to)267-271
Number of pages5
JournalChemistry Letters
Volume49
Issue number3
DOIs
Publication statusPublished - 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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