Organic Glasses with Tunable Liquid-Crystalline Order

TitleOrganic Glasses with Tunable Liquid-Crystalline Order
Publication TypeJournal Article
Year of Publication2018
AuthorsTeerakapibal, R.
Secondary AuthorsHuang, C.B.
Tertiary AuthorsGujral, A.
Subsidiary AuthorsYu, L., and M. D. Ediger
JournalPhysical Review Letters
Start Page055502
Date Published02/2018

Liquid crystals (LCs) are known to undergo rapid ordering transitions with virtually no hysteresis. We report a remarkable counterexample, itraconazole, where the nematic to smectic transition is avoided at a cooling rate exceeding 20 K/s. The smectic order trapped in a glass is the order reached by the equilibrium liquid before the kinetic arrest of the end-over-end molecular rotation. This is attributed to the fact that smectic ordering requires orientational ordering and suggests a general condition for preparing organic glasses with tunable LC order for electronic applications.