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Spatially Responsive Multicolor Lanthanide‐MOF Heterostructures for Covert Photonic Barcodes
Author(s) -
Gao Zhenhua,
Xu Baoyuan,
Zhang Tongjin,
Liu Zhen,
Zhang Weiguang,
Sun Xun,
Liu Yang,
Wang Xue,
Wang Zifei,
Yan Yongli,
Hu Fengqin,
Meng Xiangeng,
Zhao Yong Sheng
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202009295
Subject(s) - heterojunction , photonics , nanotechnology , materials science , covert , nanoscopic scale , energy transfer , luminescence , optoelectronics , computer science , engineering physics , physics , linguistics , philosophy
Micro/nanoscale photonic barcodes based on multicolor luminescent segmented heterojunctions hold potential for applications in information security. However, such multicolor heterojunctions reported thus far are exclusively based on static luminescent signals, thus restricting their application in advanced confidential information protection. Reported here is a strategy to design responsive photonic barcodes with heterobimetallic (Tb 3+ /Eu 3+ ) metal—organic framework multicolor heterostructures. The spatial colors could be precisely controlled by thermally manipulating the energy‐transfer process between the two lanthanides, thus achieving responsive covert photonic barcodes. Also demonstrated is that spatially resolved responsive barcodes with multi‐responsive features could be created in a single heterostructure. These findings offer unique opportunities to purposely design highly integrated responsive microstructures and smart devices toward advanced anti‐counterfeiting applications.