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Water-Molecule-Induced Reversible Fluorescence in a One-Dimensional Mn-Based Hybrid Halide for Anticounterfeiting and

Wen Ma¹, Qingkai Qian¹, Saif M H Qaid²

¹Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.

|September 19, 2023

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This summary is machine-generated.

This study introduces a novel hybrid manganese halide material that rapidly switches luminescence color between red and green upon heating and cooling. This reversible color change, triggered by water molecules, offers promising applications in fast anticounterfeiting technologies.

Area of Science:

Materials Science
Chemistry
Optoelectronics

Background:

Hybrid metal halides are explored for anticounterfeiting due to reversible structural and luminescence changes.
Slow response times in existing materials limit rapid information identification.

Purpose of the Study:

To develop a hybrid metal halide with a fast, reversible photoluminescence transformation for anticounterfeiting applications.
To investigate the mechanism of water-molecule-induced luminescence switching.

Main Methods:

Synthesis of a one-dimensional hybrid manganese-based halide: (C5H11N3)MnCl2Br2·H2O.
Characterization of photoluminescence properties under thermal stimuli (heating and cooling).
Investigation of water molecule's role in luminescence reversibility.

Keywords:

anticounterfeiting digital encryption and decryption hybrid metal halides optical logical gate water-molecule-induced transformation

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Main Results:

The material exhibits a rapid (<40 s) reversible transformation from red to green emission upon heating, and back to red emission upon cooling in a moist environment.
Water molecules act as a stimulus for reversible photoluminescence switching between red and green emissions.
The material demonstrates stability over repeated cycles and enables digital encryption-decryption and optical logic gates.

Conclusions:

A novel hybrid manganese halide offers fast, reversible, water-molecule-induced photoluminescence switching.
This material shows potential for advanced anticounterfeiting strategies and information security.