正名奖学金成立谈李先生的爱国奉献精神
王建国
【大学化学】doi: 10.12461/PKU.DXHX202412089
李正名院士是我国著名的教育家、化学家和农药学家。在李先生逝世3周年之际,李正名奖学金捐赠暨首届颁奖仪式在南开大学举行。本文结合一部分典型的具体事例,对李正名先生的教育家精神和科学家精神进行了介绍,从中折射出他始终如一的坚定爱国信念和无私奉献精神。青年学子通过学习李先生的光辉事迹,可以深入了解老一辈科学家浓厚的家国情怀。本文有助于激励当代大学生厚植爱国主义理想与信念,增强自主创新意识和能力,立志为中华民族的伟大复兴贡献自己的全部力量。
关键词: 李正名奖学金, 教育家精神, 科学家精神, 家国情怀
Praseodymium-organic framework with 4, 4′-oxybis(benzoic acid): Rare broken layer structure, antibacterial activity, and sensing for Cd2+ ions
Peipei CUI, Yawen ZHENG, Pan LI, Peiyan GUAN, Zhaohong QIAN
【无机化学学报】doi: 10.11862/CJIC.20250152
A novel 3D metal-organic framework (MOF) [Pr2(L)3(H2O)5·H2O]n (Pr-1), (H2L=4, 4′-oxybis(benzoic acid)) with a rare structure of broken layer net, was constructed under the condition of solvothermal synthesis. The structure and crystal net were analyzed and characterized. This rod net of Pr-1 is new to both RCSR and ToposPro databases, and is named as rn-12 as suggested. Due to the luminescent properties of H2L and Pr(Ⅲ), the solid-state fluorescence property and sensing performance (solvents and metal ions) of Pr-1 were investigated. The sensing experiments indicated that Pr-1 could act as a fluorescence sensor to detect Cd2+ ions with good sensitivity. In addition, antibacterial activities show that Pr-1 exhibited stronger antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and Bacillus subtilis (B. subtilis) compared to synthetic materials.
关键词: dicarboxylate ligand, crystal net, luminescence sensing, antibacterial activity
聚集诱导发光型有机笼状分子的合成及性质表征——推荐一个综合化学实验
李攀, 沈沪国, 华聪, 方金杰, 池向莹, 姜全, 冯紫晨, 康烨, 郑斌
【大学化学】doi: 10.12461/PKU.DXHX202502083
将前沿科研成果融入实验课程,有助于提升本科生的实践和创新能力。基于动态共价反应,从四苯基乙烯衍生物出发设计合成了一种聚集诱导发光型有机笼状分子TPE-Cage。采用核磁共振波谱仪、紫外-可见光谱仪、荧光光谱仪对其化学结构和发光性质进行了测试和表征。该综合实验分子结构设计新颖、反应路线重复性好、实验现象明显,可以激发学生的探索兴趣,锻炼知识的实践能力,增强科研创新意识。
关键词: 聚集诱导发光, 笼状分子, 动态共价化学, 综合化学实验

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