Bright, Multi‐responsive, Sky‐Blue Platinum(II) Phosphors Based on a Tetradentate Chelating Framework

A new class of highly efficient and stable, blue‐phosphorescent PtII complexes based on a tetradentate chelating framework has been found to exhibit highly sensitive and reversible responses to multiple external stimuli including temperature, pressure, and UV irradiation with distinct phosphorescent...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2017-07, Vol.56 (31), p.9160-9164
Main Authors: Liu, Lijie, Wang, Xiang, Wang, Nan, Peng, Tai, Wang, Suning
Format: Article
Language:English
Subjects:
Bright plating
Chelation
Color
dual emission
External pressure
External stimuli
Irradiation
multi stimuli-responsive
oxygen sensitizer
Phosphorescence
Phosphors
Platinum
Switching
Temperature effects
Ultraviolet radiation
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Summary:A new class of highly efficient and stable, blue‐phosphorescent PtII complexes based on a tetradentate chelating framework has been found to exhibit highly sensitive and reversible responses to multiple external stimuli including temperature, pressure, and UV irradiation with distinct phosphorescent color switching—from blue to red or white. Intermolecular excimer formation is the main origin of this intriguing multi‐response phenomenon. Highly efficient singlet‐oxygen sensitization by the PtII compounds yields UV‐light‐induced phosphorescence enhancement and color switching. Platinum gets the blues: Structural rigidification of PtII complexes has been found to be highly effective in achieving highly efficient and stable, dual emissive phosphorescent species that switch color and intensity in response to temperature, pressure, and UV light/oxygen.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201705785