Choi, Yu-Jin Koo, Jahyeon Wi, Youngjae Jang, Junhwa Oh, Mintaek Rim, Minwoo Ko, Hyeyoon Yoon, Won-Jin You, Nam-Ho Jeong, Kwang-Un 2024-01-19T09:01:58Z 2024-01-19T09:01:58Z 2023-08-31 2023-08 1944-8244 https://pubs.kist.re.kr/handle/201004/113407 Disc-shaped building blocks withcolumnar phases have attractedattention for their potential in optical applications, including aretarder. However, to achieve coatable high-performance optical films,it is essential to understand a subtle interaction balance betweenbuilding blocks and relevant self-assembled behaviors during materialprocessing. Herein, we studied a self-assembled nanocolumn evaluationof linear butterfly-shaped dendrons (T-A(3)D) consistingof thiophene-based conjugated core and flexible alkyl dendron. X-raydiffraction provided insight into the unique hexagonal columnar liquidcrystal phase of T-A(3)D, driven by intermolecular hydrogenbonding and coplanarity of the thiophene-based conjugated core. Theformation of a self-assembled nanocolumn with high mobility enabledthe uniaxial orientation of butterfly-shaped T-A(3)D on thealigned rod-shaped nematic reactive mesogens, resulting in a transparentand colorless two-layered negative retarder. The self-assembled nanocolumnconsisting of butterfly-shaped molecule would break a new ground fordeveloping advanced optical thin films. English American Chemical Society Coatable Negative Dispersion Retarder: Kinetically Controlled Self-Assembly Pathway of Butterfly-Shaped Molecular Building Blocks for the Construction of Nanocolumns Article 10.1021/acsami.3c09139 1 ACS Applied Materials & Interfaces, v.15, no.34, pp.41000 - 41006 ACS Applied Materials & Interfaces 15 34 41000 41006 N scie scopus 001049426500001 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article DISCOTIC LIQUID-CRYSTALS TRANSITION BEHAVIORS PHASE-BEHAVIOR BIREFRINGENCE FILMS PHOTOPOLYMERIZATION molecular design self-assembly nanocolumn negative dispersion antireflectivefilm