Luminescent Metal–Organic Frameworks with Anthracene Chromophores: Small-Molecule Sensing and Highly Selective Sensing for Nitro Explosives

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• 作者：Xiao Li ; Liu Yang ; Liang Zhao ; Xin-Long Wang ; Kui-Zhan Shao ; Zhong-Min Su
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：August 3, 2016
• 年：2016
• 卷：16
• 期：8
• 页码：4374-4382
• 全文大小：655K
• 年卷期：0
• ISSN：1528-7505

文摘

Five new luminescent metal–organic frameworks (MOFs), [Cd(bdc)(dia)_0.5(MeOH)](DMA)_0.5 (1), [Cd₂O(1,4-ndc)₂(dia)₂(H₂O)]·DMA (2), [Cd(1,4-ndc)(dia)]·MeOH (3), [Cd(bpdc)(dia)_0.5]·DMF (4), [Cd(bpdc) (dia)]·DEF (5) (dia = 9,10-bis(1H-imidazol-1-yl)anthracene), were obtained from solvothermal conditions and characterized by PXRD, IR, TG, and PL spectra. Single-crystal X-ray diffraction analyses showed that all compounds 1–5 display three-dimensional architectures with diverse topologies. Compound 1 was a 6-con pcu network based on dinuclear Cd cluster. Compound 2 features an eight-connected network constructed from a binuclear Cd cluster. Compound 3 presents a 3-fold interpenetrated four-connected dia topology. Compounds 4 and 5 exhibit a 3-fold interpenetrated six-connected pcu framework and a 3-fold interpenetrated four-connected dia net, respectively. Because compounds 3–5 have one-dimensional (1D) channels, the luminescence properties of 3–5 in different solvents were investigated systematically. Furthermore, compounds 3–5 display highly sensitive, selective, and well-recyclable properties in the detection of nitrobenzene (NB) and 2,4,6-trintrophenol (TNP) as fluorescent sensors.