Dual-light emitting 3D encryption with printable fluorescent-phosphorescent metal-organic frameworks  

作　　者：Jin Woo Oh Seokyeong Lee Hyowon Han Omar Allam Ji Il Choi Hyeokjung Lee Wei Jiang Jihye Jang Gwanho Kim Seungsoo Mun Kyuho Lee Yeonji Kim Jong Woong Park Seonju Lee Seung Soon Jang Cheolmin Park 

机构地区：[1]Department of Materials Science and Engineering,Yonsei University,Seoul 03722,Republic of Korea [2]The George W.Woodruff School of Mechanical Engineering,Georgia Institute of Technology,801 Ferst Drive,Atlanta,GA 30332-0405,USA [3]School of Materials Science and Engineering,Georgia Institute of Technology,771 Ferst Drive,Atlanta,GA 30332-0245,USA [4]Om Spin Convergence Research Center,Korea Institute of Science and Technology(KIST),Seoul,02792,Republic of Korea

出　　处：《Light(Science & Applications)》2023年第10期2172-2186,共15页光（科学与应用)（英文版）

基　　金：supported by the Creative Materials Discovery Program and the Pioneer Research Center Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Science,ICT&Future Planning(2018M3D1A1058536 and NRF-2022M3C1A3081211);supported by a grant from the National Research Foundation of Korea(NRF)funded by the Korean government(MEST)(No.RS-2023-00208577);supported by National R&D Program through the National Research Foundation of Korea funded by the Ministry of Science and ICT(2021M3H4A1A03047331);supported by the Open Resource Research Program of the Korea Institute of Science and Technology(2E31551).

摘　　要：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.

关 键 词：PEROVSKITE light pattern 

分 类 号：TB3[一般工业技术—材料科学与工程]