摘 要:共价有机骨架(Covalent Organic Frameworks,简称COFs)材料是一类新型多孔材料,与金属有机骨架材料不同,它们只含有机结构单元,通过很强的共价键连接(如C-C,C-O,B-O)形成二维或三维结构。这类材料具有较大的孔隙率和比表面积,良好的热稳定性,在气体储存、分离、催化等领域有较好的应用前景。我们设计了新型的基于9,9’-螺二芴多硼酸单体,计划与2,3,6,7,10,11-六羟基三亚苯缩合,生成三维共价有机骨架。本文以2,2’,7,7’-四溴-9,9’-螺二芴为原料,通过Miyaura硼烷基化得到9,9’-螺二芴-2,2’,7,7’-四取代嚬哪醇硼酸酯。同时我们从邻二甲氧基苯出发经氧化、水解合成了2,3,6,7,10,11-六羟基三亚苯。嚬哪醇硼酸酯及硼酸与邻二酚类似物的缩合反应仍在进行中。94032
毕业论文关键词:共价有机骨架材料、2,2’,7,7’-四溴-9,9’-螺二芴、2,3,6,7,10,11-六羟基三亚苯、Miyaura硼烷基化反应
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Abstract: Covalent organic frameworks (COFs) are new kind of porous material with two-dimensional and three-dimensional organic structures in which building blocks are linked by strong covalent bonds ((such as C-C,C-O,B-O))。 COFs are made entirely from light elements which are different from that of MOFs。 COFs have the merits of high porosity, surface area and thermal stability。 They have witnessed the perse applications in gas storage, gas separation and catalysis and so on。 In order to study the separation effect of specific gas, we designed a novel boronic acid based on 9, 9'-spirobifluorene。 The boric acid will be used to construct three-dimensional network together with 2,3,6,7,10,11-hexahydroxytriphenylene。 We will describe the synthesis of boronate from 2,2', 7,7'-tetrabromo-9,9'-spirobifluorene。 Meanwhile, 2,3,6,7,10,11-hexahydroxytriphenylene was obtained from 1,2-dimethoxybenzene via oxidation and hydrolysis。 The further work about the hydrolysis of borate and condensation of boric acid with catechol analog is underway。 来自优I尔Q论T文D网WWw.YoueRw.com 加QQ7520~18766
Keywords: Covalent organic frameworks (COFs)、2,2', 7,7'-tetrabromo-9,9'-spirobifluorene、2,3,6,7,10,11-hexahydroxytriphenylene、Miyaura borylation reaction
目 录
1 前言 4
2 实验部分 7
2。1 2,3,6,7,10,11-六羟基三亚苯的合成 7
2。1。1 2,3,6,7,10,11-六甲氧基三亚苯的制备 7
2。2 9,9’-螺二芴-2,2’,7,7’-四取代四硼酸的合成 8
2。2。1 螺硼酸酯的合成 8
2。2。2 螺硼酸的合成 8
3。结果与讨论 8
结论 10
参考文献 11
致 谢 12
附 录 13
1 前言论文网
共价有机骨架 (Covalent Organic Frameworks,COFs) 材料是一类新型晶态多孔材料,只含有机结构单元,通过很强的共价键连接(如C-C,C-O,B-O)形成二维或三维结构[1]。
与MOFs材料相比,COFs材料的晶体密度更低。另外, COFs合成可利用的合成单体多样,孔径在微孔和介孔范围内连续可调。它具有良好的热稳定性、较大的比表面积及孔隙率,同时通过有机结构单元修饰来对COFs进行设计,易于功能化。这些优点使得它在气体存储与分离、催化、光学等领域有重要应用[2-5]。