[1,2,3]-triazole derivatives: Mesomorphic property dependence on the molecular shape

ABSTRACT

Nowadays, heterocyclic units have been extensively studied for the preparation of thermotropic liquid crystals due to their ability to impart lateral and/or longitudinal dipoles and induce changes in molecular shape. Key parameters to accede to stable mesophases are the position of the heterocycle and the nature of terminal and linking functions. We present in this paper, an overview of several series of 1,2,3-triazole liquid crystalline derivatives that we designed and characterized. We highlight the effect of different connecting functions and the geometry of mesogenic core on the mesomorphic behavior of these derivatives.

KEYWORDS:

• 1,2,3-triazole
• catalyzed 1,3-dipolar cycloaddition
• X-ray diffraction
• smectic mesophases