TY - DATA T1 - Self-Assembled Hierarchical Superstructures from the Benzene-1,3,5-Tricarboxamide Supramolecules for the Fabrication of Remote-Controllable Actuating and Rewritable Films PY - 2016/03/29 AU - Yu-Jin Choi AU - Dae-Yoon Kim AU - Minwook Park AU - Won-Jin Yoon AU - Yumin Lee AU - Joo-Kyoung Hwang AU - Yeo-Wan Chiang AU - Shiao-Wei Kuo AU - Chih-Hao Hsu AU - Kwang-Un Jeong UR - https://acs.figshare.com/articles/journal_contribution/Self_Assembled_Hierarchical_Superstructures_from_the_Benzene_1_3_5_Tricarboxamide_Supramolecules_for_the_Fabrication_of_Remote_Controllable_Actuating_and_Rewritable_Films/3153544 DO - 10.1021/acsami.6b03364.s001 L4 - https://ndownloader.figshare.com/files/4912162 KW - BTA KW - 3 D networked KW - rewritable films KW - AZO KW - phase KW - LC N2 - The well-defined hierarchical superstructures constructed by the self-assembly of programmed supramolecules can be organized for the fabrication of remote-controllable actuating and rewritable films. To realize this concept, we newly designed and synthesized a benzene-1,3,5-tricarboxamide (BTA) derivative (abbreviated as BTA-3AZO) containing photoresponsive azobenzene (AZO) mesogens on the periphery of the BTA core. BTA-3AZO was first self-assembled to nanocolumns mainly driven by the intermolecular hydrogen-bonds between BTA cores, and these self-assembled nanocolumns were further self-organized laterally to form the low-ordered hexagonal columnar liquid crystal (LC) phase below the isotropization temperature. Upon cooling, a lamello-columnar crystal phase emerged at room temperature via a highly ordered lamello-columnar LC phase. The three-dimensional (3D) organogel networks consisted of fibrous and lamellar superstructures were fabricated in the BTA-3AZO cyclohexane-methanol solutions. By tuning the wavelength of light, the shape and color of the 3D networked thin films were remote-controlled by the conformational changes of azobenzene moieties in the BTA-3AZO. The demonstrations of remote-controllable 3D actuating and rewritable films with the self-assembled hierarchical BTA-3AZO thin films can be stepping stones for the advanced flexible optoelectronic devices. ER -