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New AIE-active pyrimidine-based boronfluoride complexes with high solid-state emission and reversible mechanochromism
Fen Qi1, Jianjian Lin2, Xiaoqing Wang3
1Institute of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, School of Material Science and Engineering, School of Pharmacy, Liaocheng University, No. 1 Hunan Road, Liaocheng, 252000, P.R. China. wangxiaoqing@lcu.edu.cn macl@lcu.edu.cn.
Abstract:
A new family of pyrimidine-based BF2 complexes () with aggregation-induced emission (AIE) and mechanochromic luminescence properties were developed. These compounds exhibit intense fluorescence in their aggregation/solid-state resulting from their large Stokes shift and AIE. X-ray crystallographic analysis shows that the weak intermolecular interactions by fixing the molecular conformations of are responsible for the intense fluorescence in solid-state. In addition to their pronounced AIE behaviour, also exhibits a reversible chromic response to grinding, and a distinct red-shift of emission is observed. The high solid-state luminescence and grinding-stimuli response properties of these compounds make them potential candidates for smart materials.
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