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Issue 61, 2015
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A sensor for formaldehyde detection: luminescent metal–organic framework [Zn2(H2L)(2,2′-bpy)2(H2O)]n

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Abstract

Density functional theory and time-dependent density functional theory methods have been used to investigate the hydrogen bonding between the Metal–organic framework [Zn2(H2L)(2,2′-bpy)2(H2O)]n and formaldehyde in the electronically excited state. The calculated geometric configuration, 1H NMR chemical shift and IR spectra of the hydrogen-bonded complex demonstrated that the hydrogen bond was strengthened in the excited state S1. The strengthening of the hydrogen bond in the S1 state would lead to a luminescence decreasing phenomenon of [Zn2(H2L)(2,2′-bpy)2(H2O)]n, and the fluorescent rate constant of [Zn2(H2L)(2,2′-bpy)2(H2O)]n was decreased when encapsulating formaldehyde into it. Taken together, these results indicated that [Zn2(H2L)(2,2′-bpy)2(H2O)]n could be used for the detection of formaldehyde.

Graphical abstract: A sensor for formaldehyde detection: luminescent metal–organic framework [Zn2(H2L)(2,2′-bpy)2(H2O)]n

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Publication details

The article was received on 23 Apr 2015, accepted on 29 May 2015 and first published on 29 May 2015


Article type: Paper
DOI: 10.1039/C5RA07373A
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Citation: RSC Adv., 2015,5, 49752-49758

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    A sensor for formaldehyde detection: luminescent metal–organic framework [Zn2(H2L)(2,2′-bpy)2(H2O)]n

    Z. Zhao, J. Hao, X. Song, S. Ren and C. Hao, RSC Adv., 2015, 5, 49752
    DOI: 10.1039/C5RA07373A

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