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Updated: Sep 14, 2025
06:08
Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
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Organic Thermoluminescence Driven by Electron Back Transfer: Microsecond Explosive Emission to Persistent Multi-Hour
Yunsheng Wang1,2, Liwei Wang2, Aisen Li1,2
1Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 22, 2025
Summary
This study introduces novel organic thermoluminescent materials utilizing radical pairs for controlled light energy release, from hours to microseconds. These materials offer precise luminescence control and exceptional stability under extreme conditions.
Area of Science:
- Materials Science
- Organic Chemistry
- Photophysics
Background:
- Conventional thermal energy management in luminescent technologies lacks precise light energy control.
- Organic thermoluminescent materials require advanced energy storage and release mechanisms.
Purpose of the Study:
- To develop organic above-room-temperature thermoluminescent materials with tunable light energy release.
- To investigate radical pairs as energy storage centers (ESCs) for controlled luminescence.
- To explore the role of transannular sulfur-oxygen interactions in thianthrene oxides.
Main Methods:
- Utilized radical pairs as energy storage centers (ESCs) in organic materials.
- Investigated thermally driven back electron transfer (BET) processes.
- Assessed luminescence modulation from multi-hour afterglows to microsecond bursts.
- Tested material stability under extreme conditions, including boiling water and prolonged air exposure.
Main Results:
- Achieved controlled light energy release with acceleration rates up to 1.8 × 108 times.
- Demonstrated precise luminescence modulation via thermally driven BET processes in thianthrene oxides.
- Exhibited robust material stability: 4-hour luminescence in boiling water and 6-month energy storage in air.
Conclusions:
- Pioneered organic thermoluminescent materials with unprecedented control over light energy release.
- Highlighted the significance of BET processes for energy storage and release in organic systems.
- Established new performance benchmarks for luminescent materials under demanding environmental conditions.
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