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毕业论文网 > 毕业论文 > 化学化工与生命科学类 > 应用化学 > 正文

基于多羧酸配体的金属有机骨架化合的合成及性能研究毕业论文

 2022-03-02 21:28:01  

论文总字数:16471字

摘 要

通过对金属有机骨架化合物的研究,科学家们发现该化合物具有特定的表面空隙以及灵活的框架结构,从而因在固体材料的巨大应用前景而引起了科学家们的研究。例如:在选择性气体吸附、异相催化、荧光、离子交换等等。大多数的化合物都是利用水热法合成的。该领域最近的一个发展方向是运用逆合成法,组合化学法和超分子化学法来稳定新的MOFs。

多羧酸配体是构筑MOFs的理想构件,因为多羧酸配体本身含有的羧基去质子化后可在组装MOFs时自动补偿电荷,因而可方便外来阴离子的影响,而且其多变的配体模式可组装出结构复杂的MOFs。

本论文采用多羧酸作为第一配体与过渡金属Cu和Zn采用溶剂热与水热的方法,合成配合物12。并通过UV、IR、X射线衍射、荧光光谱、等对其进行了性质表征与研究。

关键词: 金属有机骨架化合物 多羧酸配体 溶剂热 水热

Synthesis of metal-organic frameworks (MOFs) derived from polycarboxylic acid

ABSTRACT

Recent studies on metal-organic frameworks (MOFs) shown that their designable framework architectures and have specific pore surfaces are of potential interest to chemists studying various functionalities of solid-state materials, such as selective gas sorption, heterogeneous catalysis, magnetism, and ion exchange. Most of these compounds have been prepared employing hydrothermal methods. One of the recent developments in this area has been the use of retrosynthesis, modular chemistry, and supramolecular chemistry approaches for stabilizing novel MOFs compounds.

Polycarboxylic acid ligands are ideal for building MOFs because the carboxyl groups contained in the polycarboxylic acid ligands themselves can be automatically compensated for the charge when assembling MOFs, thus facilitating the effects of extraneous anions and their varied ligands The pattern can be assembled with complex MOFs.

In this article, select the polycarboxylic acid as the first ligand, some new functional complexes with zinc (II) and Cu (II) metal ions respectively as their central atom in hydrothermal method and solution method synthesize the complexes 1 and 2. At the same time, through X-ray powder diffraction (PXRD), ultraviolet spectrum, infrared spectrum, fluorescence spectrum to carry on the characterization and research on its properties.

Keywords: metal-organic frameworks; polycarboxylic acid ligand; hydrothermal method

目录

摘要 I

Abstract II

第一章 综 述 1

1.1 前言 1

1.2金属-有机骨架(MOFs)的网络结构 1

1.3配体分类及合成方法 2

1.3.1基于多羧酸配体的有机框架化合物的有机配体类.............................6

1.3.2芳香羧酸配体.........................................................................................8

1.3.3氮杂环羧酸配体......................................................................................9

1.3.4含脂肪羧酸配体....................................................................................11

1.4有机骨架化合物的设计及合成影响因素 12

1.4.1有机骨架化合物的设计.......................................................................12

1.4.2影响MOFs合成的因素.......................................................................12

1.5基于多羧酸配体的有机骨架化合物的合成方法.................................................................................................................13

1.5.1溶液法....................................................................................................13

1.5.2界面扩散法...........................................................................................13

1.5.3溶剂热法................................................................................................14

1.6羧酸配体的有机骨架化合物的性质应用........................................................14

1.6.1在气体储备方面的应用………………………………………………14

1.6.2气体的选择性吸附和分离……………………………………………14

1.6.3催化剂…………………………………………………………………14

1.6.4光电磁材料……………………………………………………………14

第二章 实验部分 15

2.1 实验材料与仪器 15

2.2 实验内容 16

2.2.1 配合物的合成...................................................................................16

2.2.2 合成方法...........................................................................................16

2.2.3 测试仪器和方法................................................................................17

第三章 实验结果与讨论 18

3.1 Cu-L配合物结构的测定..................... 18

3.2 Cu-L配合物的荧光光谱分析 21

第四章 结论与展望 25

4.1结论 25

4.2 展望 25

参考文献 26

致谢 28

第一章 综述

1.1 前言

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