Oh, Jin Woo Lee, Seokyeong Han, Hyowon Allam, Omar Choi, Ji Il Lee, Hyeokjung Jiang, Wei Jang, Jihye Kim, Gwanho Mun, Seungsoo Lee, Kyuho Kim, Yeonji Park, Jong Woong Lee, Seonju Jang, Seung Soon Park, Cheolmin 2024-01-19T08:33:57Z 2024-01-19T08:33:57Z 2023-10-05 2023-09 2095-5545 https://pubs.kist.re.kr/handle/201004/113302 Optical encryption technologies based on room-temperature light-emitting materials are of considerable interest. Herein, we present three-dimensional (3D) printable dual-light-emitting materials for high-performance optical pattern encryption. These are based on fluorescent perovskite nanocrystals (NCs) embedded in metal-organic frameworks (MOFs) designed for phosphorescent host-guest interactions. Notably, perovskite-containing MOFs emit a highly efficient blue phosphorescence, and perovskite NCs embedded in the MOFs emit characteristic green or red fluorescence under ultraviolet (UV) irradiation. Such dual-light-emitting MOFs with independent fluorescence and phosphorescence emissions are employed in pochoir pattern encryption, wherein actual information with transient phosphorescence is efficiently concealed behind fake information with fluorescence under UV exposure. Moreover, a 3D cubic skeleton is developed with the dual-light-emitting MOF powder dispersed in 3D-printable polymer filaments for 3D dual-pattern encryption. This article outlines a universal principle for developing MOF-based room-temperature multi-light-emitting materials and a strategy for multidimensional information encryption with enhanced capacity and security. High security solid-state optical encryption is developed, based on fluorescent and phosphorescent dual-light-emitting MOFs in combination with 2D- and 3D-printing technologies. English Nature Publishing Group Dual-light emitting 3D encryption with printable fluorescent-phosphorescent metal-organic frameworks Article 10.1038/s41377-023-01274-4 1 Light: Science & Applications, v.12, no.1 Light: Science & Applications 12 1 Y scie scopus 001064177700001 2-s2.0-85170646136 Optics Optics Article ROOM-TEMPERATURE PHOSPHORESCENCE TOTAL-ENERGY CALCULATIONS LUMINESCENT