Functional Roles of Polymers in Room‐Temperature Phosphorescent Materials: Modulation of Intersystem Crossing, Air Sensitivity and Biological Activity

Organic room‐temperature phosphorescent (RTP) materials routinely incorporate polymeric components, which usually act as non‐functional or “inert” media to protect excited‐state phosphors from thermal and collisional quenching, but are lesser explored for other influences. Here, we report some exemp...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2023-03, Vol.62 (12), p.e202218712-n/a
Main Authors: Su, Hao, Hu, Kan, Huang, Wenhuan, Wang, Tao, Zhang, Xiaolong, Chen, Biao, Miao, Hui, Zhang, Xuepeng, Zhang, Guoqing
Format: Article
Language:English
Subjects:
Air temperature
Biological activity
Electrostatic properties
Emissions
Fluorescence
Intersystem Crossing
Luminescent Polymer
Modulation
Phosphorescence
Phosphors
Polymers
Room-Temperature Phosphorescence
Sensitivity
Triplet State
Ultralong Afterglow
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Summary:Organic room‐temperature phosphorescent (RTP) materials routinely incorporate polymeric components, which usually act as non‐functional or “inert” media to protect excited‐state phosphors from thermal and collisional quenching, but are lesser explored for other influences. Here, we report some exemplary “active roles” of polymer matrices played in organic RTP materials, including: 1) color modulation of total delayed emissions via balancing the population ratio between thermally‐activated delayed fluorescence (TADF) and RTP due to dielectric‐dependent intersystem crossing; 2) altered air sensitivity of RTP materials by generating various surface morphologies such as nano‐sized granules; 3) enhanced bacterial elimination for enhanced electrostatic interactions with negatively charged bio‐membranes. These active roles demonstrated that the vast library of polymeric structures and functionalities can be married to organic phosphors to broaden new application horizons for RTP materials. Functional roles of polymers, other than “inert” protecting media, were introduced and highlighted in room‐temperature phosphorescent (RTP) materials. Three exemplary roles include modulations of intersystem crossing, air sensitivity and biological activity, respectively, which greatly expand the application horizons for sophisticated polymeric RTP materials in the future.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202218712