醛基取代聚合物的制备及其荧光探针应用研究

发布时间：2018-06-13 18:26

本文选题：醛基取代聚合物 + 聚合物后修饰　；参考：《新疆大学》2017年硕士论文

【摘要】：本文通过自由基聚合和Suzuki偶联反应合成两种含醛基的聚合物,并通过几类反应对上述带有醛基的聚合物进行后修饰,制得系列具有荧光的聚合物。对这些聚合物进行光学性能研究发现其可以实现对特定物质(如爆炸物、重金属离子以及活性氧化物)的特异性检测,论文主要从以下几方面展开工作:1.通过自由基聚合制得含醛基的聚丙烯酸酯类非共轭聚合物P1,并通过高效的多组分Kabachnik-Fields反应对该聚合物进行后修饰,成功地将几种含胺基的官能团引入到该聚合物上得到系列聚合物。选择其中的一种聚合物P1-2对其荧光性能进行探究,发现该聚合物可以实现对爆炸物特异性响应且几乎不受测试环境干扰,从而可实现对爆炸物的检测;2.通过Suzuki偶联反应合成醛基取代的(芴-三苯胺)共轭聚合物CP1,通过串联Knoevenagel-Michael反应对其进行后修饰制得双甲酮修饰的共轭聚合物CP2。对其荧光性能研究中发现该聚合物在高水体系中对重金属离子Hg~(2+)以及活性氧化物ClO~-具有特异性光学响应;3.由于与异腈官能团在对金属离子特异性响应方面的研究还较少,通过席夫碱将异腈基团引入到共轭聚合物CP1中制备出相应的聚合物CP3并对其荧光性能进行研究,发现异腈官能团与Ag~+间较强的相互作用使CP3的荧光性质发生了改变。
[Abstract]:In this paper, two kinds of aldehyde-containing polymers were synthesized by radical polymerization and Suzuki coupling reaction. The polymers with aldehyde group were modified by several kinds of reactions, and a series of fluorescent polymers were prepared. The optical properties of these polymers were studied and it was found that they could be used to detect specific substances (such as explosives, heavy metal ions and active oxides). An aldehyde-containing polyacrylate unconjugated polymer (P1) was prepared by free radical polymerization. The polymer was modified by the reaction of highly efficient multi-component Kabachnik-Fields. Several functional groups containing amino groups were successfully introduced into the polymer to obtain a series of polymers. One of the polymers, P1-2, was selected to investigate its fluorescence properties. It was found that the polymer could achieve a specific response to explosives and almost no interference from the test environment, so that the detection of explosives could be achieved. The aldehyde-substituted (fluorenyl-trianiline) conjugated polymer CP1 was synthesized by Suzuki coupling reaction. The conjugated polymer CP2 modified by dimethyl ketone was prepared by series Knoevenagel-Michael reaction. It is found that the polymer has a specific optical response to heavy metal ion Hgf2) and active oxide ClO- in high water system. Because there is little research on the specific response of isonitrile to metal ions, the isonitrile group was introduced into conjugated polymer CP1 by Schiff base to prepare the corresponding polymer CP3 and its fluorescence properties were studied. It was found that the strong interaction between isonitrile functional group and Ag3 changed the fluorescence properties of CP3.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O631;O657.3

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