6533b820fe1ef96bd1279869

RESEARCH PRODUCT

Tristriazolotriazines with π-Conjugated Segments: Star-Shaped Fluorophors and Discotic Liquid Crystals

Thorsten RiethHeiner DetertDorothee BorchmannStefan Glang

subject

chemistry.chemical_compoundMaterials sciencechemistryPhenyleneDiscotic liquid crystalCyanuric chlorideSolvatochromismHalochromismSide chainColumnar phasePhotochemistryThermotropic crystal

description

C3-symmetrical tristriazolotriazines substituted with phenylene rings carrying lateral flexible alkoxy side chains were prepared via condensation/ring transformation of cyanuric chloride and tetrazoles. These star-shaped, planar compounds can form broad thermotropic mesophases. Due to the extensive π-conjugation, these compounds are highly emissive and the octupolar donor-acceptor electronic structure results in non-linear optical properties like solvatochromism. Brønstedt acids provoke halochromism of the absorption and of the fluorescence.

https://doi.org/10.4028/www.scientific.net/ast.77.118