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In recent years, all inorganic CsPbX3(X = F, Cl, Br, and I) perovskite quantum dots (QDs) have garnered increasing attention for their exceptional optical properties. However, the commercialization of CsPbX3is hampered by poor environmental stability and lead toxicity. Fortunately, the strategy of incorporating CsPbX3into microcrystalline glass effectively addresses this issue. Notably, CsPbF3demonstrates improved phase stability and a unique electronic structure, making its exploration crucial for various applications. In this study, we synthesized CsPbF3QDs-in-glass (QiG) and Tb3+-doped CsPbF3QDs-in-glasses (QiGs) using melt quenching and in-situgrowth methods. The CsPbF3QiG exhibits intrinsic photoluminescence with the main peak in the ultraviolet range, while Tb3+-doped glasses show co-emission of CsPbF3QDs and Tb3+, allowing tunable colors by adjusting Tb3+content. We systematically studied and evaluated the application of Tb3+-doped CsPbF3QiG as an optical temperature sensor. Importantly, the glass sample demonstrates high stability, including good thermal stability, superior high-temperature resistance, and moisture stability. This work significantly contributes to the exploration of the optical properties of CsPbF3QiG, providing new insights into its future applications in diverse optical-related fields.

Brevinin-GR23 (B-GR23) was a brevinin-2 like antimicrobial peptide, which had antimicrobial activity against Staphylococcus aureuswith minimum inhibitory concentration (MIC) of 16 µM. B-GR23 increased the bacterial membrane permeation, leading to the damage of membrane integrity and the leakage of genomic DNA, then causing the cell death. The peptide nearly inhibited all plantonic bacteria to start the initial attachment of biofilm at the concentration of 1 × MIC. Whereas the disruption rates on immature and mature biofilm decreased from 60% to 20%. B-GR23 reduced the production of extracellular polysaccharides (EPS) in the planktonic growth of S. aureus, which is a crucial structure of biofilm formation. B-GR23 with the concentration of ½ × MIC inhibited 50% water-soluble EPS, and 48% water-insoluble EPS, which contributed to the antibiofilm activity. B-GR23 had no significant toxicity to human blood cells under-tested concentration (200 µM), making it a potential template for designing antimicrobial peptides.