Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088, China.
Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China.
Angew Chem Int Ed Engl. 2023 Mar 13;62(12):e202218712. doi: 10.1002/anie.202218712. Epub 2023 Feb 14.
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.
有机室温磷光（RTP）材料通常包含聚合物成分，这些成分通常作为非功能性或“惰性”介质来保护激发态磷光体免受热和碰撞猝灭，但对于其他影响的研究较少。在这里，我们报道了聚合物基质在有机 RTP 材料中一些典型的“活性作用”，包括：1）通过平衡热激活延迟荧光（TADF）和 RTP 之间的种群比例，从而调节总延迟发射的颜色，这是由于介电依赖性系间窜越；2）通过生成各种表面形貌，如纳米级颗粒，改变 RTP 材料对空气的敏感性；3）增强细菌消除能力，从而增强与带负电荷的生物膜的静电相互作用。这些活性作用表明，聚合物结构和功能的巨大库可以与有机磷光体结合，为 RTP 材料拓宽新的应用领域。
