Hu Jun, Li Qiang, Wang Xingdong, Shao Shiyang, Wang Lixiang, Jing Xiabin, Wang Fosong
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Angew Chem Int Ed Engl. 2019 Jun 17;58(25):8405-8409. doi: 10.1002/anie.201902264. Epub 2019 May 17.
Through-space charge transfer polymers (TSCT polymers) that contain a non-conjugated polystyrene backbone and spatially separated donor and acceptor units for solution-processed OLEDs with full-color and white emission is reported. By tuning the charge transfer strength between donor and acceptors with different electron-accepting ability, emission color spanning from deep blue to red can be achieved. By incorporating two kinds of donor/acceptor pairs in one polymer to create duplex through-space charge-transfer channels, blue and yellow emission can be simultaneously obtained to realize white electroluminescence from a single polymer. The TSCT polymers exhibit thermally activated delayed fluorescence effect with delayed-component lifetimes in range of 0.36-1.98 μs, and unexpected aggregation-induced emission (emission intensity enhancement of up to 117 from solution to aggregation state).
报道了一种用于溶液处理的全彩和白色发光有机发光二极管（OLED）的含非共轭聚苯乙烯主链以及空间分离的供体和受体单元的穿空间电荷转移聚合物（TSCT聚合物）。通过调节具有不同吸电子能力的供体和受体之间的电荷转移强度，可以实现从深蓝色到红色的发光颜色。通过在一种聚合物中引入两种供体/受体对以形成双穿空间电荷转移通道，可以同时获得蓝色和黄色发射，从而实现单一聚合物的白色电致发光。TSCT聚合物表现出热激活延迟荧光效应，延迟成分寿命在0.36 - 1.98 μs范围内，并且具有意外的聚集诱导发光（从溶液态到聚集态发射强度增强高达117）。
