Recent Advancements for the Recognization of Nitroaromatic Explosives Using Calixarene Based Fluorescent Probes

Desai, Vishv; Panchal, Manthan; Dey, Sudip; Panjwani, Falak; Jain, V. K.

doi:10.1007/s10895-021-02832-y

Cited by 19 publications

(12 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The possibilities with calix[4]arenes are endless on account of their tunability with suitable ligating sites to accomplish the detection of metal cations, 71 anions, 72 explosives, 73 and biomolecules 74 amongst others, in a selective manner on occasions. They were also found to have potential in biomedical applications.…”

Section: Different Types Of Fluorescent Cyclophanesmentioning

confidence: 99%

Fluorescent cyclophanes and their applications

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Different Types Of Fluorescent Cyclophanesmentioning

confidence: 99%

Fluorescent cyclophanes and their applications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Experimental procedures and characterization data ( 1 H, 13 C and ESI-MS) of parent Oxacalix [4]arene (DHOC) and pyren-1-ylmethyl 2-chloroacetate (PMCA), Various plots of complex binding, Tables of result recovery from real samples and a detailed study of molecular docking for the complexes are provided in the supplementary data.…”

Section: Supporting Information Summarymentioning

confidence: 99%

“…[11,12] In recent years, there has been a development in the detection of nitroaromatic compounds by the use of calixarene. [13] To design a ligand attached to the basic calixarene moiety, for the detection of explosives, we need to consider the desired functionality and properties. Nitroaromatics are commonly used in explosives and are electron-withdrawing in nature due to the presence of the nitro group.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Quenched Fluorescence‐based Assay for Selective Detection of Nitroaromatic Compounds using Pyrene‐Appended Oxacalix[4]arene Host

et al. 2023

Self Cite

View full text Add to dashboard Cite

A novel pyrene appended supramolecular assembly (PAOC) has been fabricated by reacting intermediate-pyren-1-ylmethyl 2chloroacetate (PMCA) with oxacalix[4]arene and characterized by 1H NMR, 13 C NMR and ESI-Mass. PAOC works as fluorescent chemosensor for the selective detection of nitroaromatic compounds such as 4-nitrophenol (4NP) and 2,4,6-trinitrophenol (TNP). The binding mechanism between PAOC and the analytes were investigated through various spectroscopic techniques, and the results indicate a strong interaction between the two. The fluorescence intensity of PAOC is quenched upon interaction with nitroaromatic compounds due to a photoinduced electron transfer process, which was validated by DFT calculations. The sensor exhibits excellent selectivity and sensitivity towards TNP over other nitroaromatic compounds. The detection limits for TNP and 4NP were found to be 1.6 μM and 1.9 μM, respectively. PAOC's detection results in real water samples are remarkable. This study provides a new approach to develop highly selective and sensitive chemosensor for the detection of nitroaromatic compounds, which have significant environmental and health hazards.

show abstract

“…Lately, a wide range of fluorescence sensors for monitoring explosives in the solid, solution and vapor phases have been developed [ 5 ], in particular based on calixarenes [ 6 , 7 ]. Owing to their structural features, these macrocycles have been widely investigated as ion and neutral molecule receptors [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Critical Analysis of Association Constants between Calixarenes and Nitroaromatic Compounds Obtained by Fluorescence. Implications for Explosives Sensing

Miranda

Marcos

Ascenso³

et al. 2023

Molecules

View full text Add to dashboard Cite

The binding behaviour of two ureido-hexahomotrioxacalix[3]arene derivatives bearing naphthyl (1) and pyrenyl (2) fluorogenic units at the lower rim towards selected nitroaromatic compounds (NACs) was evaluated. Their affinity, or lack of it, was determined by UV-Vis absorption, fluorescence and NMR spectroscopy. Different computational methods were also used to further investigate any possible complexation between the calixarenes and the NACs. All the results show no significant interaction between calixarenes 1 and 2 and the NACs in either dichloromethane or acetonitrile solutions. Moreover, the fluorescence quenching observed is only apparent and merely results from the absorption of the NACs at the excitation wavelength (inner filter effect). This evidence is in stark contrast with reports in the literature for similar calixarenes. A naphthyl urea dihomooxacalix[4]arene (3) is also subject to the inner filter effect and is shown to form a stable complex with trinitrophenol; however, the equilibrium association constant is greatly overestimated if no correction is applied (9400 M−1 vs 3000 M−1), again stressing the importance of taking into account the inner filter effect in these systems.

show abstract

Recent Advancements for the Recognization of Nitroaromatic Explosives Using Calixarene Based Fluorescent Probes

Cited by 19 publications

References 46 publications

Fluorescent cyclophanes and their applications

Fluorescent cyclophanes and their applications

A Quenched Fluorescence‐based Assay for Selective Detection of Nitroaromatic Compounds using Pyrene‐Appended Oxacalix[4]arene Host

Critical Analysis of Association Constants between Calixarenes and Nitroaromatic Compounds Obtained by Fluorescence. Implications for Explosives Sensing

Contact Info

Product

Resources

About