【大学化学】doi: 10.12461/PKU.DXHX202405134
本文以山西大学化学实验教学示范中心为例,探讨了一流专业建设背景下化学实验教学示范中心的改革方向与实践措施。中心围绕学生“知识、能力、质素”协调发展的理念,坚持“三全育人”,以“立足化学优势,服务山西煤基产业”为特色发展方向,以创新实验、虚拟仿真实验、课程群建设为抓手,开展了一系列改革措施,取得了显著成效。
【无机化学学报】doi: 10.11862/CJIC.20240389
Bovine serum albumin (BSA) and glycine (Gly) dual-ligand-modified copper nanoclusters (BSA-Gly CuNCs) with high fluorescence intensity were synthesized by a one-pot strategy. Based on the competitive fluorescence quenching and dynamic quenching effects of ornidazole (ONZ) on BSA-Gly CuNCs, a simple and sensitive detection method for ONZ was successfully developed. The experimental results demonstrate that the addition of the small molecule Gly can more effectively protect CuNCs, and thus enhance its fluorescence intensity and stability. The proposed assay allowed for the detection of ONZ in a linear range of 0.28 to 52.60 μmol·L-1 and a detection limit of 0.069 μmol·L-1. Compared with the single-ligand-modified CuNCs, dual-ligand-modified BSA-Gly CuNCs had higher fluorescence intensity, stability, and sensing ability and were successfully applied to evaluate ONZ in actual ONZ tablets.
【无机化学学报】doi: 10.11862/CJIC.20240415
以硼酸与苯甲酸(BZA)为原材料,通过一步热解法合成了B掺杂的长余辉室温磷光碳量子点(B-CQDs-BZA)。采用透射电子显微镜(TEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、紫外可见(UV-Vis)吸收光谱与荧光/磷光发射光谱对B-CQDs- BZA的形貌、结构及发光性能进行表征。结果显示,合成的B-CQDs-BZA主要是由无定形碳构成的尺寸介于2.0~4.5 nm之间的零维碳量子点。B-CQDs-BZA经254与302 nm的紫外光照射后,可呈现出长达20 s的蓝色室温磷光,经测试其磷光寿命长达2.09 s。该方法简单、快速且具有普遍适用性,使用多种原材料均可合成长余辉室温磷光CQDs。基于B-CQDs-BZA卓越的室温磷光发光寿命,我们将B-CQDs-BZA成功应用于时间分辨防伪技术。另外,根据水分子对B-CQDs-BZA的猝灭效应,将其制作成湿度试纸,用来检测环境空气的湿度。