SiO2/TiO2/Metal-Phenolic Network Heterostructures for Photochemically-inert and UV-to-Blue Light Protecting Sunscreens
발표자
김희원 (KAIST)
연구책임자
남윤성 (KAIST)
공동저자
김희원 (KAIST), 남윤성 (KAIST), 최새한 (KAIST)
초록
내용
To achieve reactive oxygen species (ROS)-free and full-spectrum protection, titanium dioxide (TiO2)-based UV filters must overcome high photocatalytic activity and narrow spectral coverage. We present a novel organic-inorganic hybrid platform designed to overcome these challenges through a SiO2/TiO2/metal-phenolic network (MPN) heterostructure. SiO2 scaffolds were used to anchor TiO2 nanocrystals, preserving UV-shielding performance while mitigating photochemical reactivity and nanoparticle-related safety risks. A Zn2+-based MPN layer provides an antioxidant passivation barrier and facilitates a ligand-to-metal charge transfer-mediated absorption pathway. This interface engineering strategy offers a promising route for broad-spectrum, low-phototoxicity sunscreens. This research was supported by Korea Health Industry Development Institute (KHIDI) (grant number: RS-2024-00340429) and Korea Technology and Information Promotion Agency for SMEs (TIPA) (grant number: RS-2025-02306912).