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毕业论文网 > 毕业论文 > 环境科学与工程类 > 资源科学与工程 > 正文

基于AIE的MOFs发光材料的组装毕业论文

 2022-06-01 22:14:50  

论文总字数:23629字

摘 要

金属有机骨架材料(MOFs)以其丰富的空间拓扑结构,以及独特的光、电、磁等性质引起了研究者的广泛关注,在气体储存与分离、催化、传感、作为正在载体和模板构筑新材料、药物传输等应用有广泛的应用前景。MOFs发光材料在聚集状态下会发生荧光淬灭的现象,这会限制其在检测领域的应用。而具有聚集诱导发光性质(AIE)的分子在聚集状态下不会发生荧光的淬灭,而其荧光大大增强。由此,本文将聚集诱导发光机制引入到刚性体系的金属有机框架结构中,制备基于聚集诱导发光性质的金属有机框架材料(AIE - MOFs)的主要思路,主要探索了具有AIE性质的配体合成,并与稀土金属通过自组装合成MOFs。我们以蒽醌为原料,通过溴化、Suzuki偶联反应,酯水解反应等步骤得到目标产物四羧酸化合物。我们将四羧酸化合物配体与稀土金属离子Eu3 进行进行了一系列溶剂热反应,通过对各种反应条件如温度,时间,溶剂比例进行了优化了,得到高纯度的针状、无色透明晶体配合物。配体和配合物的荧光光谱表明其具有良好的发光性能。

关键词:MOFs,AIE,Suzuki,发光材料,荧光性能

The assembly of MOFS luminescent material based on AIE

Abstract

Metal organic frameworks (MOFs) is one kind of material with a reticular structure, homogeneous pore, pore size which can be adjusted, and great specific surface area . It has attracted widespread attention of researchers.Because of the space topological structure of the rich, as well as unique optical, electrical, magnetic and other properties. Compared with traditional materials, MOFs luminescent material has the incomparable superiority. The reason that MOFs can act as solid luminescent materials is that it can provides unique platform because of the predict performance of structure light. MOFs is mainly used in gas storage and separation, catalysis, sensor, it can be used as a carrier and template to build new material, drug delivery, etc.. However, MOFs luminous material will have fluorescence quenching in the aggregation state of the phenomenon, which may limit their application in the field of detection. Molecules with aggregation induced emission (AIE) properties in the aggregate state will occur the fluorescence quenching, and it will be greatly enhanced . Thus,we introduce the aggregation induced luminescence mechanism into the metal frame structure of the rigid system,making the preparation of metal organic frame materials (MOFs - AIE) based on aggregation induced luminescence properties and exploring the synthesis of ligands with AIE properties and the synthesis of rare earth metals by self-assembly MOFs.We have obtained the target product four carboxylic acid by the steps of the chemical reaction of the product with the process of the chemical reaction of the raw material, the Suzuki coupling reaction and the hydrolysis reaction of the ester.We have carried out a series of solvent thermal reactions with the rare earth metal ion Eu3 , a four carboxylic acid compound ligand,By the reaction conditions such as temperature, time, solvent ratio were optimized, the high purity of the needle, colorless transparent crystal complexes.The fluorescence spectra of the ligands and complexes show good luminescent properties of the complexes.

Key words: MOFs,AIE,Suzuki,Luminescent material,Fluorescence properties

目录

摘要 I

Abstract II

第一章 文献综述 1

1.1金属有机骨架材料(MOFs)的研究历史和现状 1

1.2MOFs的应用研究 1

1.3MOFs配位聚合物的发光性质 2

1.3.1发光MOFs材料的优势 2

1.3.2 MOFs材料的发光机理 3

1.4聚集诱导发光效应(AIE) 7

1.5本论文的设计思想 10

第二章 基于AIE的MOFs发光材料的组装 12

2.1引言 12

2.2实验部分 12

2.2.1仪器与试剂 12

2.2.2测试与表征 13

2.2.3 合成部分 14

2.3结果与讨论 18

第三章 结论与展望 21

1.结论 21

2.展望 21

参考文献 22

附录 26

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