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The reporter learned from the China University of Science and Technology that Prof. Yaohongbin’s group of the School of Chemistry and Materials Science has developed a simple and highly efficient method for synthesizing soluble Cu-I cluster-based hybrid fluorescent materials and using their aggregation-induced luminescence (AIE). ) Effects A series of highly efficient light-emitting aqueous inks have been prepared. Related research results were published in the most recent issue of the German Journal of Applied Chemistry.
In recent years, Cu-I cluster-based hybrid materials have received extensive attention in the field of optoelectronic applications because of their excellent photoluminescence characteristics and their low cost compared to other noble metal-based luminescent materials. However, Cu-I cluster-based hybrid materials reported so far are mostly insoluble powder materials, which imposes great restrictions on their application.
Prof. Yao Hongbin’s research group successfully prepared a new type of Cu-I cluster-based hybrid material with high solubility through a simple ligand exchange method, and confined the new material to smaller-sized microemulsion droplets. To study its AIE effect. It is found that the micro-emulsion without fluorescence gradually exhibits fluorescence due to the accumulation of Cu-I hybrid clusters due to the volatilization of the solvent, and the increasing aggregation state also leads to an increase in the fluorescence intensity over time. In addition, a series of Cu-I cluster-based hybrid nanoparticles with different luminescence properties can be obtained by adjusting the ligand species, and its photoluminescence covers the entire visible spectrum. These hybrid nano-particles have good dispersibility in aqueous solution, which is a good choice for preparing high-efficiency fluorescent inks in combination with their environment-friendly and high-efficiency light-emitting characteristics.
This work pioneered the exploration of the AIE effect of Cu-I cluster-based hybrid materials and is of great significance for the development of new AIE materials. In addition, such Cu-I cluster-based fluorescent inks have important application prospects in anti-counterfeit labels, optoelectronic devices, and bioimaging. Immediately after the publication of the work, it was followed by the magazine "Nature", and reported as a research highlight. (Reporter Wu Changfeng)
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