Odd-even behavior of ferroelectricity and antiferroelectricity in two homologous series of bent-core mesogens

Seng Kue Lee, Sung Heo, Jong Gun Lee, Kyung Tae Kang, Kazuya Kumazawa, Koushi Nishida, Yoshio Shimbo, Yoichi Takanishi, Junji Watanabe, Takayuki Doi, Takashi Takahashi, Hideo Takezoe

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Abstract

Two chiral bent-core mesogens Pn-O-PIMB(n- 2)* (n= 9 and 10) and their oxygen analogues Pn-O-PIMB(n - 2)*-(n - 4)O (n = 8, 9, and 10) with ω-[(S)-amyloxy]alkoxy terminal groups were prepared, and their phase structures were investigated by means of electro-optic, polarization reversal current and second harmonic generation measurements in order to clarify the effect of the interlayer steric interaction on the emergence of polar orderings. The odd-even behavior for the alternative appearance of ferroelectricity and antiferroelectricity was observed in two homologous series; the bent-core mesogens P10-O-PIMB8*, P8-O-PIMB6*-4O, and P10-O-PIMB8*-6O in addition to the previously reported P6-O-PIMB4* and P8-O-PIMB6*, where the length of chains n is even, exhibited ferroelectric phases. On the contrary, the mesogens P7-O-PIMB5*, P9-O-PIMB7*, and P9-O-PIMB7*-5O, where n is odd, showed antiferroelectric phases. It is obvious that the interlayer steric interaction plays a major role for the emergence of a variety of phase structures.

Original languageEnglish
Pages (from-to)11085-11091
Number of pages7
JournalJournal of the American Chemical Society
Volume127
Issue number31
DOIs
Publication statusPublished - 2005 Aug 10
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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    Lee, S. K., Heo, S., Lee, J. G., Kang, K. T., Kumazawa, K., Nishida, K., Shimbo, Y., Takanishi, Y., Watanabe, J., Doi, T., Takahashi, T., & Takezoe, H. (2005). Odd-even behavior of ferroelectricity and antiferroelectricity in two homologous series of bent-core mesogens. Journal of the American Chemical Society, 127(31), 11085-11091. https://doi.org/10.1021/ja052315q