29600-21-3Relevant academic research and scientific papers
Tristriazolotriazines with Azobenzene Arms - Acidochromic Dyes and Discotic Liquid Crystals
Sperner, Marcel,Tober, Natalie,Detert, Heiner
, p. 4688 - 4693 (2019)
Tristriazolotriazines with azobenzene substitution and peripheral alkoxy- or alkylamino chains were prepared from the corresponding aryltetrazoles and cyanuric chloride. These star-shaped dyes are highly acidochromic. Alkoxy-substitution allows reversible trans-cis photoswitching. Compounds with a 3,4-dialkoxy substitution are discotic liquid crystals that form broad and stable thermotropic mesophases. The thermal behavior was studied by DSC and polarizing optical microscopy.
Azomesogens having a lateral hydroxy substituent
Dixit, Sandhya,Vora
experimental part, p. 43 - 52 (2010/04/02)
Two homologous series of liquid crystalline azoesters consisting of a lateral hydroxyl substituent on the central benzene ring at 2' positions have been synthesized and thermally characterized. All the 24 members, of both series, exhibit high temperature nematic phases. All the compounds of both series are thermally stable and exhibit a wide mesomorphic range. The homologues have been characterized using Infra Red (IR), Nuclear Magnetic Resonance Spectroscopy (NMR), and Differential Scanning Calorimetry (DSC). Their mesomorphic properties and other characteristics are discussed.
