Functional Roles of Polymers in Room-Temperature Phosphorescent Materials: Modulation of Intersystem Crossing,Air Sensitivity and Biological Activity |
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| Authors: | Hao Su Dr. Kan Hu Dr. Wenhuan Huang Dr. Tao Wang Dr. Xiaolong Zhang Prof. Biao Chen Dr. Hui Miao Prof. Xuepeng Zhang Prof. Guoqing Zhang |
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| Affiliation: | 1. Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088 China;2. Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026 China |
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| Abstract: | 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. |
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| Keywords: | Intersystem Crossing Luminescent Polymer Room-Temperature Phosphorescence Triplet State Ultralong Afterglow |
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