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Updated: Jul 19, 2025

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
First examples of room-temperature discotic nematic liquid crystals exhibiting ambipolar charge carrier mobilities
Monika Gupta1, Abhinand Krishna Km1, Simran Sony1
1Department of Chemistry, Indian Institute of Technology Ropar (IIT-Ropar) Bara Phool, Punjab-140001, India. monika.gupta@iitrpr.ac.in.
Abstract:
Four new room-temperature nematic liquid-crystalline (LC) dimers consisting of a wedge-shaped 3,4,5-tridecyloxy gallic ester molecule linked to either cyanobiphenyl, cholesteryl, pentaalkynylbenzene or triphenylene based moieties are reported. Dimers with pentaalkynylbenzene and triphenylene moieties in their room-temperature discotic nematic (ND) mesophase show ambipolar charge carrier mobilities of the order of 10-5 cm2 V-1 s-1 and 10-3 cm2 V-1 s-1, respectively, as measured using a time-of-flight (ToF) technique.
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