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A silicone adhesive with ultralong room-temperature phosphorescence for direct damage visualization
1College of Polymer Science and Engineering, National Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu 610065, China. wuqi57@scu.edu.cn.
Materials Horizons
|August 26, 2025
Summary
Researchers developed a novel phosphorescent adhesive for real-time microdamage detection. This material offers persistent luminescence for structural health monitoring and advanced applications.
Area of Science:
- Materials Science
- Chemistry
Background:
- Visual detection of microdamage is vital for structural health monitoring.
- Current methods for in situ microdamage visualization are often complex and have harsh operational requirements.
Purpose of the Study:
- To develop a novel room temperature phosphorescent adhesive (RTPA) for facile in situ microdamage visualization.
- To achieve persistent phosphorescence emission in commercial adhesive systems.
Main Methods:
- Synthesized a novel RTPA using dynamic B-O bonds.
- Characterized the phosphorescence properties, including emission lifetime under ambient conditions.
- Evaluated the adhesive capabilities on various substrates (metals, inorganic compounds, polymers).
Main Results:
- The RTPA exhibited ultralong phosphorescence lifetimes up to 1.931 s under ambient conditions.
- The silicone-based RTPA demonstrated versatile adhesion to diverse substrates.
- Enabled in situ visual detection of microdamage in bonded substrates like glass through dark-field phosphorescence.
Conclusions:
- The developed RTPA offers a promising solution for in situ microdamage visualization.
- Its unique properties make it suitable for structural health monitoring, anti-counterfeiting, and information encryption.
