Efficient Light Emitters in the Solid State: Synthesis, Aggregation-Induced Emission, Electroluminescence, and Sensory Properties of Luminogens with Benzene Cores and Multiple Triarylvinyl Peripherals
作者:Carrie Y. K. Chan、Zujin Zhao、Jacky W. Y. Lam、Jianzhao Liu、Shuming Chen、Ping Lu、Faisal Mahtab、Xiaojun Chen、Herman H. Y. Sung、Hoi Sing Kwok、Yuguang Ma、Ian D. Williams、Kam Sing Wong、Ben Zhong Tang
DOI:10.1002/adfm.201102030
日期:2012.1.25
Benzene‐cored luminogens with multiple triarylvinyl units are designed and synthesized. These propeller‐shaped molecules are nonemissive when dissolved in good solvents, but become highly emissive when aggregated in poor solvents or in the solid state, showing the novel phenomenon of aggregation‐induced emission. Restriction of intramolecular motion is identified as the main cause for this effect.
设计并合成了具有多个三芳基乙烯基单元的以苯为核心的发光剂。这些螺旋桨状分子在溶解于良溶剂中时不会发光,但在不良溶剂中或以固态聚集时会变得高度发光,显示出聚集诱导发射的新现象。限制分子内运动被认为是造成这种作用的主要原因。凭借其高的固态荧光量子产率(高达1)以及高的热稳定性和形态稳定性,以发光剂为发光体的发光二极管以高亮度和10800 cd m的效率发出天蓝色至绿蓝色光- 2,5.8光盘-1和2.7%。发光剂的纳米聚集体的发射可以通过苦味酸进行指数猝灭,或者通过Ru 3+进行选择性猝灭,猝灭常数分别高达10 5和〜2.0×10 5 L mol -1,使其高度敏感(并具有选择性)。 )爆炸物和金属离子的化学传感器。