The vapour phase detection of explosive markers and derivatives using two fluorescent metal–organic frameworks

Jurcic, Monika; Peveler, William J.; Savory, Christopher N.; Scanlon, David O.; Kenyon, Anthony J.; Parkin, Ivan P.

doi:10.1039/c4ta05638h

Cited by 72 publications

(37 citation statements)

References 60 publications

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“…The detection and quantification of low amounts of explosives is a concern for homeland security and environmental pollution. The nitroaromatics, including 2,4,6-trinitrotoluene (TNT), picric acid/2,4,6-trinitrophenol (TNP), and 2,6-dinitrotoluene (2,6-DNT), are used as explosives [21,22].…”

Section: Introductionmentioning

confidence: 99%

Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

et al. 2019

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In this study, a lanthanide metal organic framework based on the ligand of terephthalic acid derived from waste polyethylene terephthalate (PET) bottles was designed and synthesized. The structure and morphology of the Tb-BDC was investigated by X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The Tb-BDC displays a high selectivity and sensitivity towards picric acid (TNP). The luminescence intensities exhibit a linear relation, with a concentration of TNP over the range of 1 × 10−5–1 × 10−4 M, with a limit of detection of 1 × 10−5 M. The sensing mechanism is also discussed. This is the first time that waste PET materials have been used as the starting precursor of terephthalic acid (BDC) for the fabrication of lanthanide MOF (metal organic framework), which is applied in sensing TNP.

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Section: Introductionmentioning

confidence: 99%

Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

et al. 2019

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“…Fluorescent polymers in combination with receptors such as crown ether, terpyridine, bi‐imidazole, and bipyridine have been demonstrated to show several advantages for sensing applications compared to small molecules . Nitrogen‐based ligands such as 2,2′‐bipyridine and other multidentate ligands have been used extensively as metal‐chelating ligands because of their effective coordination with a variety of metal ions . The emission intensity of fluorescent conjugated polymers dramatically decreases as a turn‐off sensor under photon irradiation if the exciton can rapidly migrate along the polymer backbone to the 2,2′‐bipyridine site.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of alternating copolymers containing bipyridine and phenylene vinylene for fluorescent chemosensors

Chen

Lin

et al. 2015

J of Applied Polymer Sci

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Alternating copolymers containing bipyridine and phenylene vinylene were synthesized through a Wittig condensation reaction of their corresponding diphosphonium salts and dialdehydes. The molecular weights of the resulting polymers were relatively low because of the low solubility in the reaction solvents. The optical properties of the polymers were substantially affected by the repeating units of phenylene vinylene. The absorption spectra of the copolymers in the solid state exhibited a bathochromic shift compared to those carried out in solution. The effective conjugation length could be extended with the addition of Cu 21 , Ni 21 , and Zn 21 ions into the polymer solutions in a 1 : 1 ratio of the bipyridine to the phenylene vinylene units. All of the polymer solutions behaved as a turn-off fluorescent chemosensor upon the addition of a variety of the metal ions. The sensing behavior to various metal ions revealed that the polymers were highly sensitive to the Cu 21 , Ni 21 , and Zn 21 ions. V C 2015 Wiley Periodicals, Inc. J. Appl.Polym. Sci. 2015, 132, 42795.

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“…Parkin's recent work reiterated the key importance of MOF porosity in sensing applications and highlighted the value of uniform microcrystals to sensitivity in explosives detection. 247 They proposed that the flatter and more uniform crystals gave greater access to the material on the sensing substrate, and thus improved response. In addition, Qiu et al used a self-sacrificing template to synthesize MOF nanotubes.…”

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confidence: 99%

Fluorescence based explosive detection: from mechanisms to sensory materials

2015

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The detection of explosives is one of the current pressing concerns in global security. In the past few decades, a large number of emissive sensing materials have been developed for the detection of explosives in vapor, solution, and solid states through fluorescence methods. In recent years, great efforts have been devoted to develop new fluorescent materials with various sensing mechanisms for detecting explosives in order to achieve super-sensitivity, ultra-selectivity, as well as fast response time. This review article starts with a brief introduction on various sensing mechanisms for fluorescence based explosive detection, and then summarizes in an exhaustive and systematic way the state-of-the-art of fluorescent materials for explosive detection with a focus on the research in the recent 5 years. A wide range of fluorescent materials, such as conjugated polymers, small fluorophores, supramolecular systems, bio-inspired materials and aggregation induced emission-active materials, and their sensing performance and sensing mechanism are the centerpiece of this review. Finally, conclusions and future outlook are presented and discussed.

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The vapour phase detection of explosive markers and derivatives using two fluorescent metal–organic frameworks

Cited by 72 publications

References 60 publications

Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

Waste PET as a Reactant for Lanthanide MOF Synthesis and Application in Sensing of Picric Acid

Synthesis and characterization of alternating copolymers containing bipyridine and phenylene vinylene for fluorescent chemosensors

Fluorescence based explosive detection: from mechanisms to sensory materials

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