团结就是力量,独立才能发光——关于AIE和ACQ效应的科普实验
贾艳媛, 荣融, 刘洁, 郭晶, 姜国玉, 郭硕
【大学化学】doi: 10.12461/PKU.DXHX202402035
发光材料在生活中具有诸多的应用,但目前面向公众的有关发光材料尤其是ACQ和AIE分子的发光现象及其光学性能研究的普及实验仍有欠缺。本实验是以科普为目的,分别针对各个年龄段的受众设计了特色性普及实验;同时,本实验也是一个多场景适用性科普实验,分别于线上线下多渠道进行展示。实验步骤简单易行,色彩丰富,发光效果明显。既便于操作,又能极大地让公众了解生活中的发光分子,更重要的是本实验可以有效引导青少年发现、提出并解决科学问题,更有利于实现对青少年一定程度上的研究性思维与方法的培养,具有一定创新性。
关键词: 发光材料, ACQ效应, AIE效应, 荧光, 梯度科普
Synthesis, crystal structure, and fluorescence properties of Cd-based complex with pcu topology
Lulu DONG, Jie LIU, Hua YANG, Yupei FU, Hongli LIU, Xiaoli CHEN, Huali CUI, Lin LIU, Jijiang WANG
【无机化学学报】doi: 10.11862/CJIC.20240171
A cadmium-based coordination polymer [Cd4(L)4(1,4-bib)4]·2DMA (CP1) was synthesized under solvothermal conditions, where H2L=2 hydroxyterephthalic acid, 1, 4 bib=1, 4 bis(imidazol1 ylmethyl) benzene, and DMA=N,N-dimethylacetamide. The structure was characterized by thermogravimetric analysis, elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. The single crystal structure shows that CP1 belongs to the orthorhombic system, the space group Pna21, Cd(Ⅱ) forms a 2D plane structure through L2-, and the 2D plane structure forms a 3D network with pcu topology through 1,4-bib. CP1 shows good fluorescence sensing performance and thermal stability and realizes efficient and sensitive detection of 2,4,6-trinitrophenol (TNP), Fe3+, and fluridine (FLU). The detection limits were 0.051 μmol·L-1 (TNP), 0.65 μmol·L-1 (Fe3+), and 0.14 μmol·L-1 (FLU), respectively. In addition, the mechanism of fluorescence detection of pollutant detection was explored and a portable test paper was successfully prepared. A portable test paper could not only selectively detect FLU, but also showed different fluorescence colors in different concentrations of FLU.
关键词: complex, crystal structure, fluorescence quenching

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