两个d10金属配位聚合物的合成、结构及对2,4,6-三硝基苯酚的选择性检测
Syntheses, Crystal Structures and Exceptionally Selective Detection of Picric Acid of Two Luminescent d10 Metal-Organic Frameworks
作者单位E-mail
徐涵 黄山学院化学化工学院, 黄山 245041  
潘兆瑞 南京晓庄学院环境科学学院, 南京 211171 pzr_2006@163.com 
摘要: 以4,4'-二(1-咪唑基)苯硫醚(BIDPT),4,4'-羧基二苯胺(H2aba),5-氧乙酸间苯二酸(H3OABDC),Zn(NO32·6H2O和Cd(NO32·6H2O为原料,用溶剂热法合成了2个配位聚合物[Zn(BIDPT)(aba)]n1)和[Cd(BIDPT)(HOABDC)]n2)。利用X射线单晶衍射、红外、元素分析、热重分析和X射线粉末衍射对其进行了表征。单晶X射线衍射研究发现配合物1为具有二重穿插的三维dia拓扑网络结构;配合物2为3-连接六边形的hcb二维拓扑结构,再通过氢键堆积作用形成三维超分子结构。12具有很好的荧光性质,硝基苯化合物对配合物12的荧光性质有不同程度的淬灭作用。它们都对2,4,6-三硝基苯酚的检测具有很好的灵敏性。对其淬灭机理进行了深入的研究。
关键词: 配位聚合物  晶体结构  荧光  硝基苯类爆炸物
基金项目: 国家自然科学基金青年基金(No.21301094)和安徽高校省级自然科学研究基金(No.KJHS2017B05)资助项目
Abstract: Two coordination polymers, namely[Zn(BIDPT)(aba)]n (1) and[Cd(BIDPT)(HOABDC)]n (2) (BIDPT=4,4'-bis(imidazol-l-yl)diphenyl thioether, H2aba=4,4'-azanediyldibenzoic acid, H3OABDC=5-oxyacetate isophthalic acid) have been solvothermally synthesized and characterized by infrared spectroscopy, elemental analysis, and powder X-ray diffraction. In 1, the Zn(Ⅱ) ions are linked by BIDPT and aba2- ligands to give a 2-fold interpenetrating 3D frameworks with {66} dia topology. Compound 2 can be viewed as a 3-connected hcb net with the point symbol of {63} and extended into a three-dimensional supramolecule through hydrogen bonds. Complexes 1 and 2 show strong luminescence and their luminescence could be quenched by a series of nitroaromatic explosives. Importantly, they exhibit very highly sensitive and selective detection of picric acid compared to other nitroaromative explosives. The quenching mechanisms are also deeply studied.
Keywords: coordination polymer  crystal structre  photoluminescence  nitroaromatic explosives
投稿时间:2017-06-30 修订日期:2017-09-11
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徐涵,潘兆瑞.两个d10金属配位聚合物的合成、结构及对2,4,6-三硝基苯酚的选择性检测[J].无机化学学报,2018,34(1):55-62.
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