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Nonwoven fabric coated with a tetraphenylethene-based luminescent metal–organic framework for selective and sensitive sensing of nitrobenzene and ammonia

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Abstract

Luminescent metal–organic frameworks (LMOFs) are promising sensors in suspensions but efficient solid-state sensing devices based on LMOFs are rare. In this work, we synthesized two pillared-layered LMOFs [Zn2(TCPPE)(bib)] (1) and [Zn2(TCPPE)(bpy)] (2) based on tetraphenylethene (TPE)-based ligand [(H4TCPPE = 4-(4-carboxyphenyl)phenyl]ethene; bib = 1,4-di(1H-imidazol-1-yl)benzene; bpy = 4,4′-bipyridine). Complex 1 and activated 1 exhibited high fluorescence quantum yields (Φfl) of 46.3% and 35.3%, respectively. Activated 1 coated on nonwoven fabric by the hot-pressing method could maintain its structure and strong emission. The resulting activated 1@nonwoven fabric realized fast, selective and reversible sensing of nitrobenzene vapors with a maximum quenching efficiency of 90%. Interestingly, ammonia triggered an increase in luminescence intensity with a red-shifted emission of activated 1@nonwoven fabric, which is scarcely observed. Coating LMOF particles on a suitable fabric (e.g. nonwoven fabric) could be a feasible approach to create portable solid-state luminescence sensors for practical use.

Graphical abstract: Nonwoven fabric coated with a tetraphenylethene-based luminescent metal–organic framework for selective and sensitive sensing of nitrobenzene and ammonia

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Publication details

The article was received on 20 Jul 2018, accepted on 25 Oct 2018 and first published on 27 Oct 2018


Article type: Paper
DOI: 10.1039/C8TC03587C
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Nonwoven fabric coated with a tetraphenylethene-based luminescent metal–organic framework for selective and sensitive sensing of nitrobenzene and ammonia

    C. Tao, Y. Ying, H. Wang, B. Chen, G. Zhu, Y. Song, X. Liu, Z. Zhao, L. Shen and B. Z. Tang, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C8TC03587C

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