基于喹啉和1,8-萘二甲酸酐的离子荧光传感器分子的合成及其性能研究

发布时间：2018-03-13 16:31

本文选题：荧光传感器　切入点：8-羟基-2-甲基喹啉　出处：《内蒙古大学》2017年硕士论文　论文类型：学位论文

【摘要】：工业生产的发展在使人们生活质量得以提高的同时也导致了重金属离子的污染。因此,对重金属离子的检测和识别已成为人们要解决的首要问题。与传统检测金属离子的方法相比,荧光化学传感器是一种易合成,且对特定金属离子具有高选择、高灵敏并能够进行实时监测的化合物。喹啉和1,8-萘二甲酸酐是一类光稳定性良好,荧光强度高,Stocks位移较大且易被修饰的荧光基团。所以,以它们为荧光团可以合成出具有良好荧光性质的化学传感器。在查阅并深入研究了大量文献的基础上,本论文设计并合成了几个基于喹啉和1,8-萘二甲酸酐的化学传感器,并对每一个传感器分子进行了结构表征及光谱研究。主要内容包括:第一章,叙述了化学传感器的构造、设计原理和工作机制,并介绍了基于喹啉和1,8-萘二甲酸酐的金属阳离子传感器的发展现状。第二章,合成了基于ICT和PET机理共同作用的Cu2+荧光传感器L。我们利用水合肼当作连接体将1,8-萘二甲酸酐和4-N,N-二乙氨基水杨醛通过希夫碱反应生成传感器分子L。传感器L对Cu2+的选择性识别作用在金属离子混合溶液中具有较强的抗干扰能力。同时,传感器L与Cu2+的络合使得L的荧光峰强度发生了明显的降低。第三章,基于8-羟基-2-甲基喹啉合成了作用机制为ICT机理的三价金属离子传感器M。通过对喹啉部分的羟基进行取代修饰后,再使其与1,8-萘二甲酸酐作用生成M。传感器M在无水乙醇中对三价金属离子(Al3+、Fe3+和Cr3+)具有良好的识别性,并表现为明显的荧光增强。同时,通过Job's plot实验测试,可确定传感器M与三价金属离子间是以1:1的形式配位的。第四章,基于PET机理,以8-羟基-2-甲基喹啉和萘胺为反应物合成了 Hg2+荧光猝灭型化学传感器Q。当向含有传感器Q的无水乙醇溶液中加入Hg2+时,Q的荧光峰强度显著降低。同时,通过Job's plot测试,确定了传感器Q与Hg2+间配位比为1:1。第五章,总结和展望。
[Abstract]:The development of industrial production not only improves the quality of life of people, but also leads to the pollution of heavy metal ions. The detection and recognition of heavy metal ions has become the most important problem to be solved. Compared with the traditional methods of detecting metal ions, fluorescent chemical sensors are easy to synthesize and have a high choice for specific metal ions. Quinoline and 1-butadienediformic anhydride are a class of fluorescent groups with good photostability, high fluorescence intensity, large Stocks shift and easy modification. Chemical sensors with good fluorescence properties can be synthesized by using them as fluorescent groups. Based on a large number of literatures, several chemical sensors based on quinoline and 1-tetracarboxylic anhydride have been designed and synthesized. The main contents are as follows: in the first chapter, the structure, design principle and working mechanism of the chemical sensor are described. The development status of metal cationic sensors based on quinoline and 1-butadiene-naphthalene dicarboxylic anhydride is introduced. Based on the interaction of ICT and PET mechanism, the Cu2 fluorescence sensor L. was synthesized. We used hydrazine hydrate as the ligand to form the sensor molecule L. by the Schiff base reaction of 1-Na-naphthalene dicarboxylic anhydride and 4-N- N- diethylamino salicylic aldehyde through Schiff base reaction. The selective recognition of Cu2 has strong anti-interference ability in metal ion mixed solution. The complexation of the sensor L with Cu2 results in a significant decrease in the intensity of the fluorescence peak of L. Based on 8-hydroxy-2-methylquinoline, a trivalent metal ion sensor, which is based on the mechanism of ICT, was synthesized. The sensor M has good recognition ability for trivalent metal ions such as Al _ 3O _ 3 Fe _ 3 and Cr3 in anhydrous ethanol, and shows obvious fluorescence enhancement. At the same time, it is tested by Job's plot. It can be determined that the sensor M is coordinated with trivalent metal ions in the form of 1: 1. Chapter 4th, based on the PET mechanism, Hg2 fluorescence quenching chemical sensor Q was synthesized by using 8-hydroxy-2-methylquinoline and naphthylamine as reactants. When Hg2 was added to anhydrous ethanol solution containing sensor Q, the fluorescence peak intensity of Q decreased significantly. At the same time, the intensity of fluorescence peak was measured by Job's plot. The coordination ratio between the sensor Q and Hg2 is determined to be 1: 1. 5th, which is summarized and prospected.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O657.3;TP212

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