Dynamic Manipulating Space‐Resolved Persistent Luminescence in Core–Shell MOFs Heterostructures via Reversible Photochromism

Photo‐controllable persistent luminescence at the single crystal level can be achieved by the integration of long‐lived room temperature phosphorescence (RTP) and photochromism within metal–organic frameworks (MOFs) for the first time. Moreover, the multiblock core–shell heterojunctions have been pr...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2022-01, Vol.61 (2), p.e202114100-n/a
Main Authors: Ma, Yu‐Juan, Fang, Xiaoyu, Xiao, Guowei, Yan, Dongpeng
Format: Article
Language:English
Subjects:
Epitaxial growth
Heterojunctions
Heterostructures
Irradiation
Luminescence
Metal-organic frameworks
molecular afterglow
molecular heterojunction
persistent luminescence
Phosphorescence
Photochromism
Radiation
Room temperature
room temperature phosphorescence
Single crystals
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Summary:Photo‐controllable persistent luminescence at the single crystal level can be achieved by the integration of long‐lived room temperature phosphorescence (RTP) and photochromism within metal–organic frameworks (MOFs) for the first time. Moreover, the multiblock core–shell heterojunctions have been prepared utilizing the isostructural MOFs through an epitaxial growth process, in which the shell exhibits bright yellow afterglow emission that gradually disappears upon further irradiation, but the core does not show such property. Benefitting from combined persistent luminescence and photochromic behavior, a multiple encryption demo can be facilely designed based on the dynamic manipulating RTP via reversible photochromism. This work not only develops new types of dynamically photo‐controllable afterglow switch, but also provides a method to obtain MOFs‐based optical heterojunctions towards potential space/time‐resolved information encryption and anti‐counterfeiting applications. Multiblock core–shell MOFs heterojunctions were prepared through an epitaxial growth process, in which the shell exhibits both persistent luminescence and photochromic properties. The bright yellow afterglow in MOFs shell can be detected before irradiation but almost disappears after coloration upon continuous UV irradiation.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202114100