Selective Sensing of Fe3+ and Al3+ Ions and Detection of 2,4,6‐Trinitrophenol by a Water‐Stable Terbium‐Based Metal–Organic Framework |
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| Authors: | Li‐Hui Cao Fang Shi Wen‐Min Zhang Prof Shuang‐Quan Zang Prof Thomas C W Mak |
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| Institution: | 1. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou (P. R. China), Fax: (+86)?371‐6778‐0136;2. Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR (P. R. China) |
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| Abstract: | A water‐stable luminescent terbium‐based metal–organic framework (MOF), {Tb(L1)1.5(H2O)] ? 3 H2O}n (Tb‐MOF), with rod‐shaped secondary building units (SBUs) and honeycomb‐type tubular channels has been synthesized and structurally characterized by single‐crystal X‐ray diffraction. The high green emission intensity and the microporous nature of the Tb‐MOF indicate that it can potentially be used as a luminescent sensor. In this work, we show that Tb‐MOF can selectively sense Fe3+ and Al3+ ions from mixed metal ions in water through different detection mechanisms. In addition, it also exhibits high sensitivity for 2,4,6‐trinitrophenol (TNP) in the presence of other nitro aromatic compounds in aqueous solution by luminescence quenching experiments. |
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| Keywords: | aqueous phase metal– organic frameworks microporous materials multifunctional sensor terbium |
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