An Anionic Interpenetrated Zeolite‐Like Metal–Organic Framework Composite As a Tunable Dual‐Emission Luminescent Switch for Detecting Volatile Organic Molecules |
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Authors: | Dr. Wei Xie Dr. Wen‐Wen He Prof. Shun‐Li Li Dr. Kui‐Zhan Shao Prof. Zhong‐Min Su Prof. Ya‐Qian Lan |
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Affiliation: | 1. Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, P. R. China;2. Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, Jiangsu, P. R. China |
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Abstract: | The luminescent MOF [(CH3)2NH2]2[(Zn2O)L]?5 DMF (NENU‐519, NENU=Northeast Normal University) with a zeolite BCT topology was successfully synthesized. It is a rare example of a two‐fold interpenetrated framework with a zeolite topology. NENU‐519 demonstrates the ability to selectively adsorb cationic dyes. Furthermore we developed Rh6@NENU‐519 (Rh6=Rhodamine 6G) as a dual‐emitting sensor for probing different volatile organic molecules (VOMs) due to an energy transfer between L and the dye. The composite can be used to distinguish the isomers of o‐, m‐, and p‐xylene and ethylbenzene using the emission‐peak‐height ratios of L to the dye as detectable signals, in which the readout signals are involved in the interactions between the dye@MOF composite and the guest analytes. Moreover, Rh6@NENU‐519 can serve as a luminescent switch for the detection of different aromatic compounds, like benzene, benzene substituted with different groups, and pyridine. In other words, the Rh6@NENU‐519 composite can be used as molecular decoder of the structural information of different VOMs into recognizable luminescent signals. Hopefully this work will open a new corridor to develop luminescent guest@MOF composites as sensors for practical applications. |
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Keywords: | cationic dyes dual-emitting luminescent sensors metal-organic frameworks volatile organic molecules zeolites |
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