A Novel Approach to Achieve Higher Order Using Pseudo-discotic Chromophores in Electro-optic Materials and Devices

摘要

Organic materials have great potential for electro-optic devices. Achieving higher unidirectional ordering ofrnchromophores is the main challenge in using organic materials in such devices. The prime reason for this decreasedrnorder is due to interchromophore interactions which lead to a decrease in the electro-optic coefficient, r33. A materialrnconsisting of a chromophore surrounded by dendrons and possessing an appropriate aspect ratio should facilitate thernnear Ferro-electric ordering as observed in the discotic liquid crystals. For that purpose, a prototype dendrimericrnchromophore has been synthesized and will be used in Mach-Zehnder devices to achieve lower drive voltages.