Truxene-based columnar liquid crystals: Self-assembled structures and electro-active properties

Kyosuke Isoda, Takuma Yasuda, Takashi Kato

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Columnar liquid-crystalline (LC) truxene derivatives containing branched flexible alkyl chains have been designed and synthesized. The dicyanomethylene and dithiafulvene substituents have been introduced into the π-conjugated truxene framework to tune their electronic and redox properties as well as the molecular assembled structures. The π-conjugated cores of dicyanomethylene-and dithiafulveneappended truxenes adopt bowl-shaped conformations, giving rise to a large intrinsic dipole moment perpendicular to the aromatic framework. These molemolecules form stable columnar LC structures through intermolecular dipoledipole interactions. The redox properties of LC truxene derivatives have been examined by cyclic voltammetry. The dicyanomethylene-appended truxene shows the reversible four-step electrochemical reductions, whereas the dithiafulveneappended truxene undergoes three-step oxidations.

Original languageEnglish
Pages (from-to)1619-1625
Number of pages7
JournalChemistry - An Asian Journal
Volume4
Issue number10
DOIs
Publication statusPublished - Oct 5 2009
Externally publishedYes

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Liquid Crystals
Crystalline materials
Oxidation-Reduction
Liquids
Derivatives
Dipole moment
Molecular Structure
Cyclic voltammetry
Conformations
Oxidation
cyanomethylidyne

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry
  • Organic Chemistry

Cite this

Truxene-based columnar liquid crystals : Self-assembled structures and electro-active properties. / Isoda, Kyosuke; Yasuda, Takuma; Kato, Takashi.

In: Chemistry - An Asian Journal, Vol. 4, No. 10, 05.10.2009, p. 1619-1625.

Research output: Contribution to journalArticle

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