[3PS-209]
Self-Assembled Azobenzene Based Amphiphilic Supramolecules for Organic Crystals with Metallic Gold Luster
발표자성창현 (전북대학교)
연구책임자정광운 (전북대학교)
Abstract
To replace conventional metallic paints, an azobenzene-based amphiphilic supramolecule (Lus-Azo) is synthesized, consisting of a mesogenic core with a hydrophobic alkyl tail and a hydrophilic ethylene oxide chain. Lus-Azo molecules self-assemble into dimeric building blocks via intermolecular hydrogen bonding of hydroxyl groups and construct highly ordered smectic layered structures. Morphological analyses confirm that recrystallization in polar solvents induces the growth of crystallites from powder into large plate crystals with smooth surfaces. Optical and thermal analyses confirm that the crystal not only shows a metallic luster with a reflectance spectral profile similar to actual gold in the visible range, but also maintains thermal stability up to 100 °C. Consequently, Lus-Azo can be utilized for gold-colored metallic paint and 3D origami without the need for metal particles. This work is supported by the BK21 Four and the Mid-Career Researcher Program (RS-2021-NR059321).