基于羧酸配体构筑的发光金属有机框架材料的合成及其应用于荧光传感、选择性吸附的研究

发布时间：2018-05-22 10:32

本文选题：金属-有机骨架材料 + 荧光MOFs(LMOFs)　；参考：《东北师范大学》2017年硕士论文

【摘要】：金属-有机骨架材料(Metal-Organic Frameworks,MOFs)是由无机金属离子或金属簇与有机配体通过配位键连接而组成具有分子尺寸孔的多孔结构。金属有机框架,这种新型的多孔材料,在过去的十几年里吸引了大量的注意力。他们通常是由无机金属离子或金属簇与有机配体通过配位键连接而组成的。有机配体的芳香基团或者共轭p部分在受到光激发时会发射光。此外,金属离子或无机金属簇也会参与及增强光致发光效应。荧光MOFs(LMOFs)的出现使得光致发光性质使用起来更加地方便,能够更好地应用于实际生活中。由于荧光MOFs具有选择性地捕获分析物分子的独特能力,在诸多领域表现出了优异的性质而受到了大量的关注和广泛的研究。荧光MOFs在化学传感、光催化、电致发光器件,生物医学成像等多种领域都有潜在的应用。本文中,我们选用羧酸配体2,5-二羟基对苯二甲酸合成了两例三维多孔MOFs材料,化合物1和2,Cd2(dhtp)(DMF)_2(Cd-MOF-74)(1),Zn_2(dhtp)(taz)_2(2)(dhtp=2,5-二羟基对苯二甲酸,taz=1,2,4-三氮唑)。两者都选用了2,5-二羟基对苯二甲酸,化合物2加入了辅助配体1,2,4-三氮唑。两者在小分子的传感方向表现出了优异的性质。我们对化合物1进行了铜离子的荧光检测和选择性吸附的实验,化合物1能够快速地裸眼检测并且选择性地吸附模拟生物液体中的铜离子,表现出了很强的灵敏性和选择性。我们还对化合物2进行了小分子硝基苯和铁离子的荧光检测实验。化合物1和2在荧光传感方面有比较优良的表现,可以潜在地应用于小分子和离子的荧光传感中。
[Abstract]:Metal-Organic frameworks (MOFs) is a kind of porous structure which is composed of inorganic metal ions or metal clusters connected with organic ligands through coordination bonds. Organometallic frames, a new porous material, have attracted a lot of attention in the past decade. They are usually made up of inorganic metal ions or metal clusters connected to organic ligands by coordination bonds. The aromatic groups or conjugated p parts of organic ligands emit light when excited by light. In addition, metal ions or inorganic metal clusters also participate in and enhance the photoluminescence effect. The appearance of fluorescence MOFsO LMOFs makes the use of photoluminescence more convenient and can be used in real life. Due to its unique ability to selectively capture analytes, fluorescent MOFs has attracted much attention and been widely studied for its excellent properties in many fields. Fluorescent MOFs has potential applications in many fields, such as chemical sensing, photocatalysis, electroluminescent devices, biomedical imaging and so on. In this paper, we have synthesized two three dimensional porous MOFs materials using carboxylic acid ligand 2o 5- dihydroxy terephthalic acid. Compounds 1 and 2 CD 2 DhtpPU are used to synthesize the two materials. Both of them were composed of 2o 5 dihydroxy terephthalic acid and compound 2 was added to the auxiliary ligand 1C 2N 4 triazole. They exhibit excellent properties in the sensing direction of small molecules. We have carried out fluorescence detection and selective adsorption experiments of copper ion in compound 1. Compound 1 can quickly detect copper ions in simulated biofilms by naked eyes and selectively adsorb copper ions in simulated biofilms, showing strong sensitivity and selectivity. The fluorescence detection of small molecule nitrobenzene and iron ion was also carried out for compound 2. Compounds 1 and 2 have excellent performance in fluorescence sensing and can be used in fluorescent sensing of small molecules and ions.
【学位授予单位】：东北师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O641.4

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