High ON/OFF ratio photoswitchable viscoelasticity in an azo-based dimer with twist-bend nematic phase

摘要

In this paper, we present a new photoswitchable viscoelastic material with liquid crystalline natures, which exhibits two types of nematic liquid crystalline phases and a crystal phase beneath the isotropic liquid. We present its light-triggered phase behaviors and photoswitchability of the. viscoelastic properties.