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Updated: May 23, 2026

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Synthesis of Persistent Luminescent Nanoparticles for Rewritable Displays and Illumination Applications
Published on: September 13, 2024
A vapoluminescent Eu-based metallo-supramolecular polymer.
Takashi Sato1, Masayoshi Higuchi
1Electronic Functional Materials Group, Polymer Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.
Summary
A novel Europium-based metallo-supramolecular polymer exhibits unique vapoluminescence, changing its light emission when exposed to acid-base vapors. This discovery enables switchable photoluminescence imaging applications.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Photophysics
Background:
- Metallo-supramolecular polymers offer tunable properties through coordination chemistry.
- Vapochromism, or vapor-induced color change, is a desirable property for sensing applications.
Purpose of the Study:
- To synthesize a Europium-based metallo-supramolecular polymer (polyEu).
- To investigate the vapoluminescence properties of polyEu.
- To develop a switchable photoluminescence imaging system using polyEu.
Main Methods:
- Coordination polymerization via self-assembly.
- Characterization of the synthesized polymer.
- Exposure to acid-base vapors to observe photoluminescence changes.
- Fabrication of a photoluminescence display device.
Main Results:
- Successful synthesis of polyEu through self-assembly coordination polymerization.
- Discovery of a unique vapoluminescence property in polyEu, triggered by acid-base vapors.
- Demonstration of a switchable photoluminescence imaging system controlled by acid-base vapor stimuli.
Conclusions:
- PolyEu exhibits responsive photoluminescence to acid-base vapors.
- The developed system allows for switchable imaging based on vapor detection.
- This work presents a new material for vapor sensing and responsive display technologies.
