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- W4285792961 abstract "Abstract A new fluorescent sensor, N -allyl-4-[(2-(3-methoxysalicylaldimino)ethylamino]-1,8-naphthalimide (HL), for Hg 2+ has been developed where the Schiff base substituent acts as a recognition group. This sensor shows a large Stokes shift of 3535–4042 cm −1 and a general fluorescence quantum yield of 0.05, 249–0.11, 866 in organic solvents of different polarity as expected. It also exhibits highly selective and a sensitive response to Hg 2+ ( Ф Hg+HL / Ф HL = 2.28) over other metal ions (Na + , K + , Ca 2+ , Mg 2+ , Al 3+ , Pb 2+ , Fe 3+ , Ni 2+ , Zn 2+ , Cu 2+ , Ag + , Co 2+ , Cr 3+ , Mn 2+ and Cd 2+ ) in solution (DMF/Tris-HCl buffer, 1:1, v / v , pH = 7.2). The Hg 2+ -induced fluorescence enhancement at 526 nm is proportional to the concentration of Hg 2+ in the range of 0.5–4.0 µ m with a detection limit of 0.18 µ m . Based on the fluorescence titration and a Job’s plot analysis, the metal-to-ligand ratio of the complex is 2:1 with a binding constant of 1.56 × 10 12 m −1 ." @default.
- W4285792961 created "2022-07-19" @default.
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- W4285792961 date "2022-07-20" @default.
- W4285792961 modified "2023-10-16" @default.
- W4285792961 title "A highly selective and sensitive fluorescent sensor based on a 1,8-naphthalimide with a Schiff base function for Hg<sup>2+</sup> in aqueous media" @default.
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- W4285792961 doi "https://doi.org/10.1515/znb-2022-0044" @default.
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