(698h) Stimuli-Responsive Stabilized Blue Phase Liquid Crystals Microdroplets
AIChE Annual Meeting
Friday, November 18, 2022 - 9:42am to 9:54am
We have coupled the polymerization strategy with geometrical confinements to stabilize BP structures and manipulate molecular organizations. To do so, reactive mesogens were incorporated into the BP liquid crystal, and a lab-built microfluidic device was used to confine the reactive BP mixture within microdroplets with the desired size and dispersity. After photopolymerization of the reactive mixture within spherical droplets, the BP structures were stabilized at room temperature, and the stability window was expanded by 20 °C. The stabilized droplets showed, however, a size-correlated and dynamic optical response upon exposure to temperature, mechanical deformation, and biochemicals. FESEM and TEM imaging were carried out to decipher the polymer-stabilized structures within microdroplets. This study may provide insight toward designing the micro-scale colorimetric biological and strain sensors.