Three metal organic frameworks based on mixed ligands: synthesis, crystal structures and luminescent sensing of nitro explosives

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2023-02-20 DOI:10.1007/s11243-023-00521-2

Shuang-Shuang Ge, Yan-Hong Zhang, Xiao-Qing Yang, Xian-Gui Mu

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引用次数: 1

Abstract

Three new metal organic frameworks [Zn(bipa)(suc)]_n (1), [Ni(bipa)(suc)(H₂O)₂]_n (2) and [Co(bipa)_1.5(oip)(H₂O)]_n (3) (bipa = 2,5-bis(1-imidazole)pyrazine), H₂suc = succinic acid, H₂oip = 5-hydroxy isophthalic acid) have been synthesized by solvothermal method. They were then characterized by single crystal X-ray diffraction, elemental analysis, infrared spectrum and thermogravimetric analysis. Structural analyses showed that MOFs 1 and 3 exhibited a 3D supramolecular network, while MOF 2 presented a 2D layered structure and was further assembled to a 3D architecture via intermolecular O–H···O hydrogen bond. Moreover, the luminescence sensing of MOF 1 toward nitro explosives was investigated, owing to its excellent chemical stability and luminescence properties. MOF 1 showed remarkable fluorescence quenching toward TNP with a high Ksv value of 6.48 × 10⁴ M⁻¹ and a low limit of detection of 1.4 × 10⁻⁵ M. Also, the luminescent sensing mechanism of MOF 1 was investigated.

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基于混合配体的三种金属有机骨架:硝基炸药的合成、晶体结构和发光传感

采用溶剂热法合成了三个新的金属有机骨架[Zn(bipa)(suc)]n (1)， [Ni(bipa)(suc)(H2O)2]n(2)和[Co(bipa)1.5(oip)(H2O)]n (3) (bipa = 2,5-双(1-咪唑)吡嗪)，H2suc =琥珀酸，h2ip = 5-羟基异苯二甲酸)。然后用单晶x射线衍射、元素分析、红外光谱和热重分析对其进行了表征。结构分析表明，MOF 1和MOF 3呈现三维超分子网络结构，而MOF 2呈现二维层状结构，并通过分子间O - h··O氢键进一步组装成三维结构。此外，由于MOF - 1具有优异的化学稳定性和发光性能，对其对硝基炸药的发光传感进行了研究。MOF 1对TNP表现出明显的荧光猝灭，Ksv值高达6.48 × 104 M−1，检测下限为1.4 × 10−5 M，并对MOF 1的发光传感机理进行了探讨。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.