可溶液加工的刚性树枝状大分子：合成、光物理、薄膜形态及电致发光
Solution-processable stiff dendrimers: synthesis, photophysics, film morphology, and electroluminescence.
作者信息
Zhao Zujin, Li Juo-Hao, Chen Xiaopeng, Wang Xiaoming, Lu Ping, Yang Yang
机构信息
Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China.
出版信息
J Org Chem. 2009 Jan 2;74(1):383-95. doi: 10.1021/jo802237c.
A series of solution-processable conjugated dendrimers (T1-T5) consisting of a pyrene core, fluorene/carbazole dendrons, and acetylene linkages have been successfully synthesized and fully characterized. The effects of generation on the photoluminescence (PL) and electroluminescence (EL) of dendrimers are investigated. Photon harvest and energy transfer are observed in these dendritic systems. Efficient electroluminescent single layer dendrimer devices are achieved through control of dendrimer generation and optimization of spin-coating speed. A T3-based device exhibits yellow EL (CIE: 0.49, 0.50) with a maximum brightness of 5590 cd/m(2) at 16 V, a high current efficiency of 2.67 cd/A at 8.6 V, and a best external quantum efficiency of 0.86%.
一系列由芘核、芴/咔唑树枝状支化单元和乙炔连接键组成的可溶液加工共轭树枝状聚合物（T1-T5）已成功合成并得到全面表征。研究了代数对树枝状聚合物光致发光（PL）和电致发光（EL）的影响。在这些树枝状体系中观察到了光子收集和能量转移。通过控制树枝状聚合物的代数和优化旋涂速度，实现了高效的单层树枝状聚合物电致发光器件。基于T3的器件在16 V时呈现黄色电致发光（CIE：0.49，0.50），最大亮度为5590 cd/m²，在8.6 V时具有2.67 cd/A的高电流效率，最佳外量子效率为0.86%。
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