Jie Yang, Zichun Ren, Zongliang Xie, Yingjie Liu, Can Wang, Yujun Xie, Qian Peng, Bin Xu, Wenjing Tian, Fan Zhang, Zhenguo Chi, Qianqian Li, and Zhen Li*
Angew. Chem. Int. Ed. 2017, 56, 880–884.
We report the first example of an AIEgen (DPP-BO) with fluorescence–phosphorescence dual emission under mechanical stimulation. By carefully analyzing the crystal structure of DPP-BO, the efficient intermolecular and intramolecular interactions should account for its unique mechanoluminescence (ML) properties, especially the abnormal phosphorescence, as further confirmed by controlled experiments and theoretical calculations for the presence of ISC transitions. These results provide important information for understanding the complex ML process, possibly opening up a new way to study the inherent mechanism of ML by broadening the application of AIEgens.
Keywords: Aggregation-induced emission, Dual Mechanoluminescent, Fluorescence, Phosphoresce