POS4-0791
Self-Assembled Thiophene-Conjugated Trialkoxy Benzamide Films for Negative Dispersion Broadband Antireflective Applications
Topic
S4. Colloids, Interfaces, and Molecular Assemblies for Functional Soft Materials
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Changhyeon Sung (Jeonbuk National University)
Co-Author(s)
Abstract
Molecular engineering of a novel thiophene-conjugated trialkoxy benzamide (TABA-Th) provides a coatable pathway to broadband antireflective films. Designed with a thiophene core and flexible dendrons, TABA-Th self-assembles into highly mobile hexagonal nanocolumns via hydrogen bonding and kinetic control. Mechanical shearing of these nanocolumns onto uniaxially aligned nematic reactive mesogens yields a transparent, colorless two-layered film. Optical analyses confirm the nanocolumns align orthogonally to the nematic layer’s refractive axis, enabling nearly ideal negative dispersion retardation. By integrating this alignment with shear-coating, TABA-Th enables the fabrication of advanced biaxial quarter-wave plates, offering a highly processable alternative to conventional optical materials. This work is supported by BK21 Four and the Bilateral Exchange Program (RS-2026-25442827).
