摘要：AbstractUsing high‐energy UV‐light to excite 8‐hydroxyquinoline barium (BaQ2) is a short slab for this emerging area of organic luminescent materials. However, using visible light to excite BaQ2has not been reported. To solve this problem, this study proposes the mechanochemical activation method to synthesize luminescent material of visible‐light‐excited BaQ2. This research applies infrared spectroscopy, X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and fluorescence spectrometry to analyze the structure and luminescence properties. XRD shows that BaQ2has a high crystallinity, small crystalline size, and high purity. According to the Scherrer equation, the mean particle size is 56 nm. The results of fluorescence spectrometry show that the excitation spectrum of the product is red‐shifted, and the maximum excitation wavelength is 408 nm. According to these results, the product has a high fluorescence and can be excited under visible light. This research explains the high efficiency of the mechanochemical‐activation method by thermodynamic and dynamic principles. This research also exemplifies luminescence theory of BaQ2and at the microlevel explains the theory of visible‐light‐excited theory and the principle of luminescent intensity enhancement from the point of crystallography.A new method for the synthesis of 8‐hydroxyquinoline bivalent metal complex BaQ2is proposed. The visible‐light‐excited luminescent material has a yield of 99.6% and can photoluminesce under 408 nm visible light. The scanning electron microscopy analyses show that the mechanochemical activation method can be used to obtain BaQ2, which has better crystal forms, more uniform and smooth shapes, and less grain size.
