Volume 63, Issue 2 e202313590
Communication

Unusual Thermal Quenching of Photoluminescence from an Organic–Inorganic Hybrid [MnBr4]2−-based Halide Mediated by Crystalline–Crystalline Phase Transition

Meng-Meng Lun

Meng-Meng Lun

Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189 P. R. China

These authors contributed equally to this work.

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Hao-Fei Ni

Hao-Fei Ni

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

These authors contributed equally to this work.

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Zhi-Xu Zhang

Zhi-Xu Zhang

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

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Jun-Yi Li

Jun-Yi Li

Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189 P. R. China

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Qiang-Qiang Jia

Qiang-Qiang Jia

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

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Prof. Yi Zhang

Corresponding Author

Prof. Yi Zhang

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

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Prof. Yujian Zhang

Corresponding Author

Prof. Yujian Zhang

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

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Prof. Da-Wei Fu

Corresponding Author

Prof. Da-Wei Fu

Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189 P. R. China

Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China

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Dedicated to Professor Yuguang Ma on the occasion of his 60th birthday
First published: 09 October 2023
Citations: 50

Graphical Abstract

An unusual temporary photoluminescence (PL) quenching effect is herein reported for the first time, namely the thermodynamic phase transition of (DMML)2MnBr4 (DMML=N,N-dimethylmorpholinium) couples highly with PL response. Notably, the intriguing phenomenon will make an important contribution to the further in-depth exploration of responsive photoluminescence and optical encryption.

Abstract

The ability to generate and manipulate photoluminescence (PL) behavior has been of primary importance for applications in information security. Excavating novel optical effects to create more possibilities for information encoding has become a continuous challenge. Herein, we present an unprecedented PL temporary quenching that highly couples with thermodynamic phase transition in a hybrid crystal (DMML)2MnBr4 (DMML=N,N-dimethylmorpholinium). Such unusual PL behavior originates from the anomalous variation of [MnBr4]2− tetrahedrons that leads to non-radiation recombination near the phase transition temperature of 340 K. Remarkably, the suitable detectable temperature, narrow response window, high sensitivity, and good cyclability of this PL temporary quenching will endow encryption applications with high concealment, operational flexibility, durability, and commercial popularization. Profited from these attributes, a fire-new optical encryption model is devised to demonstrate high confidential information security. This unprecedented optical effect would provide new insights and paradigms for the development of luminescent materials to enlighten future information encryption.

Data Availability Statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

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