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• W3048838520 abstract "Abstract A pyrene‐hydroxyquinoline tethered ingeniously designed and developed azine based Schiff base luminophoric system, 2‐((Z)‐((E)‐(pyren‐1‐ylmethylene)hydrazono)methyl)quinolin‐8‐ol ( PHQ ) has been explored as a selective ‘TURN ON’ chromofluorogenic sensor for hazardous Hg 2+ ions in ethanol/H 2 O (9 : 1,v/v) medium with detection limit of 0.22 μM and binding constant of 1.09 x 10 3 M −1 . The detail scrutiny of mechanism of interaction between PHQ and Hg 2+ is rationalized through various techniques like 1 H NMR titration, FT‐IR, mass spectral analysis, theoretical computations, Job's plot, dynamic light scattering (DLS), transmission electron microscopy (TEM), time resolved excited state decay dynamics and fluorescence reversibility studies, which concretely declare a synergistic effect of supramolecular aggregation induced enhanced emission and deactivation of photo‐induced electron transfer (PET) processes. On the other hand, a ‘TURN OFF’ luminescence feature of highly fluorescent PHQ hydrosol is utilized for the selective screening of powerful explosive picric acid (PA) in aqueous medium and mechanism is deciphered by means of steady state, time‐resolved emission as well as computational studies which altogether reflect a combined effect of PET and ground state complexation between probe and PA. The commendable detection limit of 55 nM and Stern‐Volmer quenching constant of 1.48 x 10 4 M −1 with high quenching efficiency of 84% increases the pertinency of the nano‐probe." @default.
• W3048838520 created "2020-08-18" @default.
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• W3048838520 date "2020-08-11" @default.
• W3048838520 modified "2023-10-10" @default.
• W3048838520 title "Mechanistic Insight into Selective Sensing of Hazardous Hg²⁺ and Explosive Picric Acid by Using a Pyrene‐Azine‐Hydroxyquinoline Framework in Differential Media" @default.
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• W3048838520 doi "https://doi.org/10.1002/slct.202001798" @default.
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