Discerning Detection of Mutagenic Biopollutant TNP from Water and Soil Samples with Transition Metal-Containing Luminescence Metal–Organic Frameworks

Abstract

Two luminescent MOFs, Mn@MOF and Cd@MOF, have been reported herein, which are capable of selectively detecting 2,4,6trinitrophenol (TNP), one of the potent organic water pollutants in the class of mutagenic explosive nitroaromatic compounds (epNACs). It is perceived that the d 10 -based Cd(II)-constituting MOF shows a better response in the realm of TNP-like nitroaromatic sensing in comparison to the d 5 -based Mn@MOF which may possess lower electron density over the conjugated building blocks. The sensing competences of these chemosensors have been explored by means of various spectroscopic experimentations, and it is observed that for both d 5 and d 10 -containing MOFs, the initial fluorescence intensity is significantly quenched in response to an aqueous solution of TNP. However, Cd@MOF is more selective and sensitive toward TNP over several other epNACs than Mn@ MOF. The high chemical stability of the MOF samples, as well as its amusing sensing efficiency of Cd@MOF, further instigated to investigate the sensing ability in various environmental specimens like soil and water culled from several zones of West Bengal, India.

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

“…Conventionally, the observed fluorescence emissions are presumed to be associated with ligand-to-metal charge-transfer (LMCT), metal-to-ligand charge-transfer (MLCT), or intraligand (π* to n/π* or π* to π) emission for a typical d 10 configuration of metal ions, Zn­(II) and Cd­(II). However, the diversity in the nature of the emission band of the CPs suggests the influence of the central metal ion as well as the property and spatial arrangement of coordinated ligands in the propagating framework . Close assessment of the crystal structures of these CPs indicates that the spectral properties are related to the presence of geometrically suitable proximal anthracene moieties, which can lead to the formation of excimers.…”

“…However, the diversity in the nature of the emission band of the CPs suggests the influence of the central metal ion as well as the property and spatial arrangement of coordinated ligands in the propagating framework. 33 Close assessment of the crystal structures of these CPs indicates that the spectral properties are related to the presence of geometrically suitable proximal anthracene moieties, which can lead to the formation of excimers.…”

“…It befits a serious concern to the Ministry of Home Affairs (MHA), Crime Bureau of Intelligence (CBI), and Ministry of Defense (MOD) of the Government agency. Therefore, it is important for the fast and effective detection of epNACs. − Some of the methods to distinguish these explosive materials include police dog detection, energy-dispersive X-ray diffraction, plasma desorption mass spectrometry, ion migration spectrum, and other several imaging techniques are familiar. − However, those are not considered to be economically and technically viable. Besides, the NACs generated from industry and chemical laboratories are a substantial threat to the environment and biological systems.…”

Detection of o‐nitro aniline by bovine serum albumin based self‐fluorescent hydrogel via FRET process

“…2 So, it is our uttermost necessity to design a rescuer for faster and easy recognition of explosives as such nitro aromatic-based explosives (2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitrophenol (TNP)) for the environmental and human security. [3][4][5] In this critical situation, the smart materials can be beneficial in all concerned areas which can eliminate the threats. Nitro-aromatics especially nitroanilines compounds are mostly used in the commercial preparation of dyes, pesticides, insecticides, herbicides, medications engineering, cosmetics, tanneries and textiles.…”

“…In a parallel time, the progress of new, efficient and specific detection kits for the explosives found in environment contamination has been explored in worldwide for the growing security threats and the environmental protection 2 . So, it is our uttermost necessity to design a rescuer for faster and easy recognition of explosives as such nitro aromatic‐based explosives (2,4,6‐trinitrotoluene (TNT) and 2,4,6‐trinitrophenol (TNP)) for the environmental and human security 3–5 . In this critical situation, the smart materials can be beneficial in all concerned areas which can eliminate the threats.…”