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Published on: December 27, 2018
Conformation-dependent dynamic organic phosphorescence through thermal energy driven molecular rotations
Juan Wei1, Chenyuan Liu1, Jiayu Duan1
1State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, 210023, P. R. China.
Researchers developed novel organic room-temperature phosphorescent (RTP) polymers with tunable luminescence. These smart materials demonstrate dynamic control over their optical properties, paving the way for advanced anti-counterfeiting applications.
Area of Science:
- Materials Science
- Organic Chemistry
- Optoelectronics
Background:
- Organic room-temperature phosphorescent (RTP) materials offer tunable optical properties for optoelectronics.
- Dynamic control over the response behaviors of these materials is crucial but challenging.
Purpose of the Study:
- To develop RTP polymers with controllable, excitation wavelength-dependent (Ex-De) phosphorescence.
- To achieve dynamic control of Ex-De RTP behavior through external stimuli.
Main Methods:
- Synthesized RTP polymers by incorporating phosphorescent rotors into polymer backbones.
- Investigated excitation wavelength-dependent (Ex-De) RTP behavior using experimental and theoretical calculations.
- Utilized thermal energy to drive molecular rotations for dynamic control.
Main Results:
- Developed color-tunable persistent luminescence polymers.
- Identified molecular conformations as key to Ex-De RTP behavior.
- Demonstrated dynamic control of Ex-De RTP behavior via thermal-induced molecular rotation.
Conclusions:
- Established a method for dynamic control of RTP materials' response behaviors without covalent modification.
- Highlighted the potential of these amorphous polymers in anti-counterfeiting technologies.
- Opened new avenues for designing smart-responsive optoelectronic materials.
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