Expanding Sunscreen Horizons: Dual-Engineered N-doped TiO2/Metal Phenolic Network Interface for ROS-Free and Full-Spectrum Protection
발표자
김희원 (KAIST)
연구책임자
남윤성 (KAIST)
공동저자
김희원 (KAIST), 최새한 (KAIST), 남윤성 (KAIST)
초록
내용
TiO2-based UV filters effectively block UVB, yet their narrow spectral coverage and photocatalytic reactive oxygen species (ROS) generation limit their use in full-spectrum sunscreens. To address this, we developed a dual-engineered heterostructure integrating N-doped TiO2 on mesoporous SiO2, encapsulated by a metal-phenolic network (MPN). N-doping creates sub-bandgap states extending attenuation into the UVA-to-blue light region, while promoting charge recombination to suppress intrinsic ROS formation. The MPN coating further enhances absorption via ligand-to-metal charge transfer and provides antioxidant passivation. This platform integrates core-level defect engineering and interfacial redox control to provide robust, non-phototoxic, and full-spectrum protection. 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).