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Remote-controllable 3D actuating and Rewritable Thin Film with well-defined Hierarchical Superstructures of Benzene-1,3,5-Tricarboxamide Supramolecules
정다영 , 정광운
UCI I410-ECN-0102-2022-500-000370593
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To realize the controllable actuating and rewritable films, we newly designed and synthesized benzene-1,3,5-tricarboxamide containing photoisomerizable azobenzene groups (denoted as B3AZO). We found that B3AZO was self-assembled to nanocoulmns mainly driven by the intermolecular hydrogen bonds between BT core through structure analysis. From the microscopic, scattering and spectroscopic results, B3AZO exhibited the phase sequence of a low-ordered hexagonal columnar liquid crystal (фLC) phase, a highly ordered LC phase (KLC), and a lamello-columnar crystal phase (KCr). With various superstructure of B3AZO, 3D networked B3AZO thin films can be switched the shape and color by controlled the wavelength of light as well as writing/erasing because of azobenzene groups in the supramolecules. This multi responsive actuator will be contributing to the smart sensor and optoelectronic devices.

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