Ionic Switch Induced by a Rectangular-Hexagonal Phase Transition in Benzenammonium Columnar Liquid Crystals.

نویسندگان

  • Bartolome Soberats
  • Masafumi Yoshio
  • Takahiro Ichikawa
  • Xiangbing Zeng
  • Hiroyuki Ohno
  • Goran Ungar
  • Takashi Kato
چکیده

We demonstrate switching of ionic conductivities in wedge-shaped liquid-crystalline (LC) ammonium salts. A thermoreversible phase transition between the rectangular columnar (Colr) and hexagonal columnar (Colh) phases is used for the switch. The ionic conductivities in the Colh phase are about four orders of magnitude higher than those in the Colr phase. The switching behavior of conductivity can be ascribed to the structural change of assembled ionic channels. X-ray experiments reveal a highly ordered packing of the ions in the Colr phase, which prevents the ion transport.

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عنوان ژورنال:
  • Journal of the American Chemical Society

دوره 137 41  شماره 

صفحات  -

تاریخ انتشار 2015