From Event: SPIE Organic Photonics + Electronics, 2017
Small molecule chiral nematic LCs contain a variety of defect lines which can cause aggregation of polymers, nanoparticles and small molecule materials such as fluorescent dyes. While normal dyes suffer aggregation induced quenching a class of propeller-like dyes display aggregation induced emission (AIE), which makes them an ideal material for cholesteric lasers. Nanoparticle dispersion is necessary for switchability, while aggregation can be used as a tool to produce assembled structures. Here we discuss strategies to promote or inhibit aggregation of various materials in chiral nematics.
Julian Evans, Nan Wang, Iam Choon Khoo, and Sailing He, "Self-assembly in chiral nematic liquid crystal," Proc. SPIE 10361, Liquid Crystals XXI, 1036103 (Presented at SPIE Organic Photonics + Electronics: August 06, 2017; Published: 25 August 2017); https://doi.org/10.1117/12.2272574.
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