A crystalline molecular gyrotop with a biphenylene dirotor and its temperature-dependent birefringence

Atsushi Fujiwara, Yusuke Inagaki, Hiroyuki Momma, Eunsang Kwon, Kentaro Yamaguchi, Manabu Kanno, Hirohiko Kono, Wataru Setaka

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Biphenyl contains a direct bond between two phenyl functional groups, and the dihedral angle between the two phenyl groups has been discussed in terms of electronic and steric stabilization. Facile rotation about the C-C bond between the two phenyl components is expected to occur at high temperatures. Here, we report observations of the rotational dynamics of a biphenylene dirotor in a crystalline state in a novel molecular gyrotop. The structure and rotational dynamics of the rotor exhibit remarkable temperature dependence. In accordance with the amplification of the angular displacement of biphenylene inside a crystal with increasing temperature, the birefringence of the single crystal decreased.

Original languageEnglish
Pages (from-to)6049-6056
Number of pages8
JournalCrystEngComm
Volume19
Issue number40
DOIs
Publication statusPublished - 2017 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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