First examples of room-temperature discotic nematic liquid crystals exhibiting ambipolar charge carrier mobilities.
Monika GuptaAbhinand Krishna KmSimran SonyShallu DhingraAsmita ShahDharmendra Pratap SinghPublished in: Chemical communications (Cambridge, England) (2023)
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 (N D ) mesophase show ambipolar charge carrier mobilities of the order of 10 -5 cm 2 V -1 s -1 and 10 -3 cm 2 V -1 s -1 , respectively, as measured using a time-of-flight (ToF) technique.