Wang, Kuan SyunKuan SyunWangCheng, Yu WeiYu WeiChengLin, Han YuHan YuLinChen, Min HaoMin HaoChenYeh, Shih ChiehShih ChiehYehHuang, Ying ChiYing ChiHuangWu, Chien HsinChien HsinWuRU-JONG JENGLiu, Ting YuTing YuLiu2023-08-282023-08-282023-11-0103009440https://scholars.lib.ntu.edu.tw/handle/123456789/634793In this study, novel dendritic urethane acrylate polymers were developed for the fabrication of robust honeycomb-like surfaces after exposure to a UV-crosslinking process. Through iterative synthesis based on a highly selective intermediate of 4-isocyanate-4′-(3,3-dimethyl-2,4-dioxo-azetidine)-diphenylmethane, poly(urea/malonamide) dendrons bearing peripheral methyl methacrylate end groups with well-defined structures were realized. A coating solution was prepared by the combined use of 30–70 wt% UA dendron acting as dendritic diluents and dendritic UA copolymers acting as amphiphiles that can fabricate honeycomb-like surfaces via a breath figure self-assembly process using water droplets as templates. The resulting film can be cured under UV light to achieve a robust honeycomb-like structure with a hexagonal structure exhibiting solvent-resistant properties in ethanol. Consequently, this solvent-resistant porous array can act as a substrate for the detection of vanishingly low concentrations of analytes that are aqueous insoluble via surface-enhanced Raman scattering analysis.Dendrimer | Honeycomb | Surface-enhanced Raman spectroscopy | Ultraviolet-curable | Urethane acrylate[SDGs]SDG3journal article10.1016/j.porgcoat.2023.1078402-s2.0-85167609464https://api.elsevier.com/content/abstract/scopus_id/85167609464