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Adaptive hydrogen-bonding strategy driven 0D manganese-based metal halides with multifunctional fluorescent
Jiamin Liu1,2, Yuntao Ruan1,2, Qiaoqi Qin1,2
1Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China.
Dalton Transactions (Cambridge, England : 2003)
|May 16, 2025
Summary
Researchers developed adaptive organic cations for manganese-based metal halides, enabling reversible luminescence changes. These materials show promise for sensitive fluorescence sensing and anti-counterfeiting due to their environmental adaptability and temperature-responsive properties.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Supramolecular Chemistry
Background:
- Organic cations with hydrogen bonding capabilities can influence the properties of metal halide frameworks.
- Luminescence modulation in metal halides is crucial for developing advanced optical materials.
Purpose of the Study:
- To design organic cations for reversible luminescence control in 0D manganese-based metal halides.
- To investigate water-driven in situ structural transformations for luminescence modulation.
- To explore applications in fluorescence-based sensing, anti-counterfeiting, and white LEDs.
Main Methods:
- Synthesis of organic cations with multiple hydrogen bond donor and acceptor sites.
- Fabrication of 0D manganese-based metal halides incorporating these cations.
- Characterization of structural transformations and luminescence properties under varying conditions (e.g., humidity, temperature).
Main Results:
- Demonstrated reversible luminescence modulation in 0D manganese-based metal halides via water-driven structural changes.
- Observed a non-fluorescent-to-fluorescent transition at human body temperature, indicating high sensitivity.
- Achieved high photoluminescence quantum yield and good stability in the fluorescent (BBD)MnBr4 material.
Conclusions:
- The designed adaptive hydrogen-bonding cations enable effective control over luminescence in manganese-based metal halides.
- These materials exhibit excellent environmental adaptability and temperature sensitivity, suitable for advanced sensing and anti-counterfeiting.
- The fluorescent (BBD)MnBr4 shows potential for applications in white light-emitting diodes (LEDs) when pumped with green light.
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