Strategic Design of Anthracene-Decorated Highly Luminescent Coordination Polymers for Selective and Rapid Detection of TNP: An Explosive Nitro Derivative and Mutagenic Pollutant

Abstract

Explosive nitroaromatic compounds (epNACs) are a class of molecules responsible for massive loss of life in the form of terror attacks and health hazards. Discerning detection of 2,4,6-trinitrophenol (TNP) like mutagenic pollutant and epNACs using robust luminescent coordination polymers (CPs) has been always a potential research field for the sake of environmental health and homeland security. In this regard, one-dimensionalacetylenedicarboxylic acid and avp = 4-[2-(9-anthryl)vinyl]pyridine} have been synthesized using H 2 adc and avp ligands into aqueous solution of the nitrate salts of corresponding metal ion. Both of the polymeric compounds show extensive hydrogen bonding and π•••π stacking interactions to form three-dimensional (3D) structures. The presence of geometrically suitable proximal anthracene moieties (extended πconjugation) in both the compounds provides feasible interacting sites for incoming analytes that also explains their prompt sensing property. Interestingly, both the fluorescent sensing probes exhibit highly efficient ratiometric and selective sensing ability toward TNP with fast response over other comparative epNACs. A detailed investigation on the mechanistic pathways for the quenching response has been obtained by density functional theory calculation. The results show higher sensitivity of 2 with a limit of detection (LOD) of 0.45 μM as compared to 1 (LOD ∼ 0.51 μM). To the best of our knowledge, such hitherto unknown CPs acting as highly fluorescent sensors are not known in the literature. Here, strategically decorated anthracene moieties are congenial to geometrically accessible interacting sites for rapid and selective detection of an explosive nitro derivative as well as mutagenic pollutant TNP with higher sensitivity.

Stable bifunctional ZnII-based sensor toward acetylacetone and l-histidine via a fluorescence red shift and turn-on effect

“…Thereinto, CP-based fluorescent sensors have the superiorities of low cost, short response time, and high selectivity and sensitivity . Therefore, the rational design and synthesis of CPs for sensing analytes are meaningful, and a large number of CP sensors for detecting metal ions, 10,11 anions, 12 organic molecules, 13 explosives, 14 temperature, 15 and pH 16 have been reported.…”

Syntheses, structures, and luminescence properties of five new coordination polymers based on 3-carboxy-1-(3′-carboxybenzyl)-2-oxidopyridinium and neutral ligands

“…[19][20][21][22][23] Nitrobenzene is not only a carcinogen but also an important chemical raw material. [24][25][26][27][28][29] It is often used as an organic synthesis intermediate and in the production of dyes, spices, and explosives and other organic synthesis industries. In addition, although the Cr 2 O 7…”

“…19–23 Nitrobenzene is not only a carcinogen but also an important chemical raw material. 24–29 It is often used as an organic synthesis intermediate and in the production of dyes, spices, and explosives and other organic synthesis industries. In addition, although the Cr 2 O 7 2− ion can be used in the production of matches and chromium pigments, and used in tanning and electroplating, it not only causes environmental pollution, but also poses a threat to human health.…”

Two coordination polymers as multi-responsive luminescent sensors for the detection of UO22+, Cr(vi), and the NFT antibiotic

“…Among the various reported novel chemical sensors, luminescent coordination polymers (LCPs) could be promising candidates and have drawn much attention because of their potential application prospects in the detection of environmental contaminants at the trace level. [40][41][42][43][44][45][46][47] Previous studies have shown that numerous LCPs exhibit outstanding abilities to detect environmental contaminants such as metal ions (e.g., Pb 2+ , Al 3+ ), toxic inorganic anions (e.g., MnO ), nitro explosives, and antibiotics, [48][49][50][51][52][53][54][55][56][57]…”

“…, Pb 2+ , Al 3+ ), toxic inorganic anions ( e.g. , MnO 4 − , Cr 2 O 7 2− , CrO 4 2− ), nitro explosives, and antibiotics, 48–57 but LCPs have been rarely explored for the detection of UO 2 2+ ions in aqueous solutions. A possible cause is that most LCPs are unstable in aqueous solutions because of weak coordination bonds in their crystal structures, which cause phase transformation or structural decomposition.…”