| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
의료용 고분자 부문위원회 |
| 제목 |
Tannin Coatings of Inorganic Sunscreen Agents for Effective UV-to-high Energy Visible Light Screening and Suppressed Photocatalytic Activity |
| 초록 |
Titanium dioxide (TiO2) was commonly applied to sunscreen due to effective ultraviolet (UV) absorption, but it induces the photochemical generation of reactive oxygen species (ROS). Herein, we introduce a polyphenol layer on TiO2 surface to suppress the photocatalytic activity of TiO2 and enhance UV-to-high energy visible light (HEV) blocking effect. Mesoporous SiO2-TiO2 particles were synthesized to minimized photocatalytic activity of TiO2. Tannin (TA) encapsulation of SiO2-TiO2 particles was performed by dip-coating process via ligand-to-metal charger transfer from tannin to TiO2. TA coating on TiO2 surface suppressed photo-induced ROS generation and extended the absorption over the HEV regions. Structural and optical properties, sun protection performance, ROS scavenging ability, and in vitro cytotoxicity were investigated to evaluate the feasibility of mesoporous SiO2-TiO2-TA hybrid as a sunscreen filter for topical applications. |
| 저자 |
최새한, 김정아, Rafia Tasnim Rahman, 남윤성
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| 소속 |
한국과학기술원 |
| 키워드 |
ultraviolet filter; titanium dioxide; tannin; polyphenol; reactive oxygen species; ligand-to-metal charge transfer
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| E-Mail |
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