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. 2024 Jan 2;14(1):397-404.
doi: 10.1039/d3ra06926e.

Facile construction of an anthracene-decorated highly luminescent coordination polymer for the selective detection of explosive nitroaromatics and the mutagenic pollutant TNP

Ersad Hossain  1 , Abhijit Hazra  2   3 , Sourav Datta  2   4 , Samim Khan  4 , Samit Pramanik  1 , Priyabrata Banerjee  2   3 , Mohammad Hedayetullah Mir  4 , Subrata Mukhopadhyay  1
Affiliations

Facile construction of an anthracene-decorated highly luminescent coordination polymer for the selective detection of explosive nitroaromatics and the mutagenic pollutant TNP

Ersad Hossain et al. RSC Adv. .

Abstract

Explosive nitroaromatic compounds (epNACs) are a group of chemicals that have caused significant human casualties through terrorist attacks and they also pose health risks. For the benefit of homeland security and environmental health, there is room for advancing research on the precise detection of epNACs. Coordination polymers (CPs) successfully serve this purpose because of their binding abilities and quenching capabilities. In this regard, a one-dimensional (1D) CP [Zn(bdc)(avp)2(H2O)]n (1; H2bdc = 1,4-benzenedicarboxylic acid and avp = 4-[2-(9-anthryl)vinyl]pyridine) was synthesized, which remarkably demonstrated extremely efficient ratiometric and selective sensing capacity toward epNACs and the mutagenic pollutant 2,4,6-trinitrophenol (TNP) with a quick response. Density functional theory (DFT) calculations provided a thorough analysis of the mechanistic routes behind the quenching reaction. Herein, geometrically accessible interaction sites were strategically decorated using anthracene moieties, allowing the quick and precise detection of explosive nitro derivatives and the carcinogenic pollutant TNP with increased sensitivity.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. (a) A perspective view of compound 1 showing the coordination environment around the Zn centre. (b) A portion of the 1D polymeric chain of 1. (c) 2D layer of 1 formed via intermolecular hydrogen bonding and π⋯π interactions in 1. Only selected atoms are shown for clarity. (d) and (e) Schematic diagrams of hydrogen bonding and π⋯π interactions, respectively.
Fig. 2
Fig. 2. Subsequent luminescent responses of CP 1 with different epNACs (10−4 M in ACN).
Fig. 3
Fig. 3. Emission profile of CP 1 upon incremental addition of TNP (10−4 M ACN).
Fig. 4
Fig. 4. Stern–Volmer (S–V) plot of TNP for CP 1.
Fig. 5
Fig. 5. Energy profile diagram of CP 1 and epNACs with calculated HOMO (black) and LUMO (red) energies by DFT.
Fig. 6
Fig. 6. Overlapping of absorption spectra of epNACs with emission spectra CP 1.
See this image and copyright information in PMC

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