Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Importance of Molecular Geometry in Liquid Crystal Formation-Incapability of Mesophase-Formation by Bent Dimesogenic and Star-Shaped Trimesogenic Compounds

  • Jung-Il Jin (Chemistry Department, College of Sciences, Korea University) ;
  • Chung-Seock Kang (Chemistry Department, College of Sciences, Korea University) ;
  • Bong Young Chung (Chemistry Department, College of Sciences, Korea University)
  • Published : 1990.06.20
Download PDF
⟨ Previous Next ⟩

Abstract

A series of compounds were synthesized that contain varying number of mesogenic units, 4-n-butylazobenzene moiety, attached to the central benzene ring through ester bond. These compounds were subjected to thermal analysis on a differential scanning calorimeter (DSC) and also on a polarizing microscope. It was found from this study that the presence of mesogenic units in a multi-mesogenic compound does not guarantee for the compound to become mesomorphic and that the linear molecular shape is conducive to form a liquid crystalline phase.

Keywords

Cited by

  1. New mesogenic compounds with unconventional molecular structures 1,2-Phenylene and 2,3-naphthylene bis[4-(4-alkoxyphenyliminomethyl)benzoates] and related compounds vol.14, pp.1, 1990, https://doi.org/10.1080/02678299308027306
  2. Liquid Crystalline Behavior of Novel Dimesogenic Compounds vol.267, pp.1, 1990, https://doi.org/10.1080/10587259508034002
  3. Liquid Crystalline Properties of Dimesogenic Compounds Consisting of Two Different Azobenzene Types of Mesogens Interlinked Through Central Polymethylene Spacers vol.309, pp.1, 1990, https://doi.org/10.1080/10587259808045523
  4. Liquid crystalline compounds with V-shaped molecular structures: synthesis and characterization of new azo compounds vol.28, pp.1, 1990, https://doi.org/10.1080/026782901462481
  5. A new family of four-ring bent-core nematic liquid crystals with a highly polar end-group vol.40, pp.1, 1990, https://doi.org/10.1080/02678292.2012.744476
  6. Phase Transition Enthalpy Measurements of Organic and Organometallic Compounds and Ionic Liquids. Sublimation, Vaporization, and Fusion Enthalpies from 1880 to 2015. Part 2. C11-C vol.46, pp.1, 1990, https://doi.org/10.1063/1.4970519