吲哚并咔唑功能化COFs材料的构筑及应用

发布时间：2018-05-07 03:24

本文选题：共价有机框架材料 + 吲哚并咔唑　；参考：《兰州大学》2017年硕士论文

【摘要】：共价有机框架材料(Covalent Organic Frameworks,COFs)是一类由共价键连接的新兴晶型有机多孔材料。该领域目前主要集中在二维或三维中新拓扑结构的开发或者基于不同功能化的应用上。吲哚并咔唑是一类非常重要的杂环化合物,其结构本身也是功能基元,在光电领域具有广泛的应用,而且它还具有合成简单和易于官能团化等优点。因此,本论文的主要研究内容是基于吲哚并咔唑结构COFs材料的构筑及其在荧光识别方面的应用。论文的第一章简要的综述了COFs材料和吲哚并咔唑的基本性质及其在光电方面的应用。论文的第三章,我们利用取代基不同的三种线性ICZ前体和不同的醛合成了五例新的COFs材料,分别记为LZU-170,LZU-171,LZU-172,LZU-173和LZU-174,希望研究前体结构与材料荧光性能的关系。结果表明,改变前体的类型对材料的荧光影响很大;而对前体进行结构上的细微修饰对对材料的荧光能够起到细调的作用。论文的第四章,我们测试了部分材料的荧光识别效果,发现在固体荧光识别中,带有吸电子基的芳香化合物蒸气对材料的荧光有淬灭效果,例如硝基苯在20 s内能将LZU-170的荧光淬灭60%;而带有供电子基的有一定的荧光增强效果,其中4-氯苯甲醚在90 s内能将LZU-170的荧光增强20%。而且发现对材料结构的微调对荧光识别效果有影响。
[Abstract]:Covalent Organic frameworks (COFs) is a kind of new organic porous materials with covalent bonding. At present, this field is mainly focused on the development of new topologies in two or three dimensions or applications based on different functions. Indole carbazole is a very important class of heterocyclic compounds, its structure itself is also a functional unit, it has a wide range of applications in the field of photoelectricity, and it also has the advantages of simple synthesis and easy functionalization. Therefore, the main research content of this thesis is the construction of COFs material based on indole carbazole structure and its application in fluorescence recognition. In the first chapter, the basic properties of COFs and indole carbazole and their applications in photoelectricity are briefly reviewed. In the third chapter, we synthesize five new COFs materials by using three linear ICZ precursors with different substituents and different aldehydes, which are described as LZU-170, LZU-171, LZU-172 LZU-173 and LZU-174, respectively. We hope to study the relationship between the structure of precursors and the fluorescence properties of the materials. The results show that changing the type of precursor has a great influence on the fluorescence of the material, while the fine modification of the precursor structure can play a fine-tuning role on the fluorescence of the material. In the fourth chapter, we have tested the fluorescence recognition effect of some materials, and found that in the solid fluorescence recognition, the vapor of aromatic compounds with electron absorbing group has quenching effect on the fluorescence of the material. For example, nitrobenzene can quench the fluorescence of LZU-170 in 20 s, while those with electron supply can enhance the fluorescence of LZU-170 in 90 s, and 4-chlorophenyl ether can enhance the fluorescence of LZU-170 in 90 s. It is also found that the fine tuning of the material structure has an effect on the fluorescence recognition.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O626

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