2004•Molecular Crystals and Liquid CrystalsRequires access

Combination of Electron-deficient and Electron-rich Discotic Liquid Crystals in Novel Unsymmetrical Columnar Twins

Sandeep Kumar, Jaishri J. Naidu, Sanjay Kumar Varshney

Abstract

The synthesis, characterization and mesomorphic properties of a new type of discotic liquid crystalline dimer bearing an electron-rich triphenylene discotic connected to an electron-deficient anthraquinone discotic via an alkyl chain spacer are reported. This donor-sigma-acceptor type molecule displays a columnar mesophase over a wide temperature range.

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Key concepts: Discotic liquid crystal, Triphenylene, Mesophase, Columnar phase, Electron acceptor, Alkyl, Crystallography, Materials science