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Published on: December 27, 2018
Engendering persistent organic room temperature phosphorescence by trace ingredient incorporation
Bingbing Ding1, Liangwei Ma1, Zizhao Huang1
1Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China.
Trace impurities can unexpectedly enhance organic persistent room temperature phosphorescence (RTP). This study identifies an impurity that induces ultralong RTP, enabling efficient bicomponent RTP systems with high quantum yields and lifetimes.
Area of Science:
- Materials Science
- Organic Chemistry
- Photophysics
Background:
- Pure organic persistent room temperature phosphorescence (RTP) is promising for applications like information encryption and optoelectronics.
- Trace impurities during synthesis can unpredictably alter RTP properties.
Purpose of the Study:
- To investigate the effect of a specific impurity on organic RTP systems.
- To develop a strategy for creating efficient bicomponent RTP materials using trace ingredients.
Main Methods:
- Isolation and structural characterization of an impurity from an organic RTP system.
- Screening of compounds to form bicomponent RTP systems via trace ingredient incorporation.
- Measurement of RTP quantum yields and lifetimes.
Main Results:
- An isolated impurity was found to induce ultralong RTP even at 0.01 mole percent concentration.
- Bicomponent RTP systems were successfully constructed, achieving high RTP quantum yields (up to 74.2%) and long lifetimes (up to 430 ms).
Conclusions:
- Trace ingredients can be strategically used to engineer high-performance organic RTP materials.
- This method offers an efficient, economical, and easily applicable approach for developing novel RTP applications.
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