Koo, Jahyeon Jang, Junhwa Kim, Minwook Hyeong, Jaeseok Yu, Dongmin Rim, Minwoo Ko, Hyeyoon Lim, Seok-In Kim, Dae-Yoon Jeong, Kwang-Un 2024-01-19T10:02:25Z 2024-01-19T10:02:25Z 2023-02-23 2023-03 https://pubs.kist.re.kr/handle/201004/113959 Many studies on the basis of cholesteric liquid crystal (CLC) have focused on dynamic optical changes utilizing photochemical reactions raising helical pitch variations. However, the conventional dyes doped in CLC system often show reversible isomerization such as trans-cis, E-Z, and open-close forms that hampers the fixation of desired color cues. Here, a cyanostilbene-based reactive mesogen (CSRM) for phototunable and subsequently polymerizable smart CLC paints is newly designed and synthesized. The structural color of the CLC paint can be precisely manipulated in remote controllable manner by inducing a photochemical reaction of CSRM. Due to the irreversible isomerization behaviors of CSRM, the constructed periodic structures with different helical pitches are intactly fixed via in situ photopolymerization under 460 nm light. In addition, the combination of helical nanostructures and cyanostilbene luminophore produces a circularly polarized light emission. The dissymmetry factor of circularly polarized luminescence is dependent on the photoregulated helical nanostructures in CLC films. The decoupled system of triple photofunctionality in a single component of chirophotonic crystalline material is applied to develop advanced optical information storages. English John Wiley and Sons Inc. Molecular Engineering for Chiroptical Smart Paints: Photo-Tunable and Polymerizable Helical Nanostructures by Cyanostilbene-Based Reactive Mesogens Article 10.1002/adom.202202707 1 Advanced Optical Materials, v.11, no.6 Advanced Optical Materials 11 6 N scie scopus 000924113400001 2-s2.0-85147425844 Materials Science, Multidisciplinary Optics Materials Science Optics Article; Early Access CHOLESTERIC LIQUID-CRYSTAL CIRCULARLY-POLARIZED LUMINESCENCE Z-ISOMERIZATION QUANTUM DOTS CONVERSION WEIGHT FILMS chiroptical property helical nanostructures photoisomerization photopolymerization smart paints