Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China.
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, P. R. China.
J Am Chem Soc. 2017 May 31;139(21):7168-7171. doi: 10.1021/jacs.7b03153. Epub 2017 May 18.
Lanthanide luminescence materials generally show great superiority in light-emitting materials, gaining increasingly exploration in the design of advanced functional materials. Herein, we prepared a supramolecular assembly via the coordination of a host molecule (1) and dilanthanide metal. Compound 1 possesses a 9,10-diphenylanthracene (ant) core with photosensitivity and terminal terpyridine (tpy), containing two-arm dibenzo-24-crown-8. The assembly could exhibit excellent lanthanide luminescence after undergoing a photoreaction from anthracene unit in 1. Significantly, the luminescence of the assembly could be reversibly switched on and off through a regulable photoreaction upon light irradiation or heating. The multiple functional behavior combined with the ease of assembly reveals that this photo/thermo-controlled lanthanide luminescence supramolecular polymer design method offers a convenient pathway for future engineering of multi-stimuli-responsive materials.
镧系元素发光材料在发光材料中通常表现出巨大的优势，在先进功能材料的设计中得到了越来越多的探索。在此，我们通过主分子（1）和镧系金属的配位制备了超分子组装体。化合物 1 具有感光性的 9,10-二苯基蒽（ant）核心和末端三吡啶（tpy），包含双臂二苯并-24-冠-8。组装体在 1 中蒽单元发生光反应后，可以表现出优异的镧系元素发光。重要的是，通过光照射或加热的可调光反应，可以可逆地打开和关闭组装体的发光。这种多功能行为以及易于组装的特性表明，这种光/热控制的镧系元素发光超分子聚合物设计方法为未来多刺激响应材料的工程设计提供了一条便捷的途径。
