Spatially Responsive Multicolor Lanthanide‐MOF Heterostructures for Covert Photonic Barcodes. Issue 43 (26th August 2020)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 43(2020)
• Page Start: 19060
• Page End: 19064
• Publication Date: 2020-08-26
• Subjects: energy transfer -- lanthanides -- metal–organic frameworks -- microstructures -- photons; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202009295
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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. Abstract : Spatially responsive photonic barcodes have been designed based on spatially resolved responsive multicolor Ln‐MOF heterostructures, which facilitate an efficient authentication and exhibit great potential in fulfilling advanced anti‐counterfeiting. These results offer a comprehensive understanding of the function‐oriented construction of responsive hybrid MOF materials to achieve miniaturized security labels.