An electron-deficient tris(triazole)-based discotic liquid crystal that exhibits fast electron transport

Abstract

In this study, a C₃-symmetric star-shaped discotic mesogen has been reported based on an electron-deficient tris(triazole) central rigid core functionalized with three peripheral trialkoxyphenyl units. The mesogen exhibits an enantiotropic columnar hexagonal (Col_h) phase that can sustain over a significant temperature range. When used in space-charge limited current (SCLC) devices, it showed ambipolar charge transport behavior with high electron mobility (μ_e) of 1.61 × 10⁻² cm² V⁻¹ s⁻¹ at ambient temperature. The finding is sufficiently significant to warrant their use in organic electronic devices.