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- W2758330305 abstract "Abstract A new Al 3+ sensor, 6-ethoxychromone-3-carbaldehyde-(3-hydroxy-2-naphthalene acyl) hydrazone (L), was designed and synthesized. The sensor L could exist steadily and detect Al 3+ in the pH range from 5.0 to 8.0 in ethanol and water (3:1, v/v). This sensor showed good selectivity and high sensitivity towards Al 3+ in the presence of most metal ions, and a remarkable enhancement in fluorescence emission intensity at 508 nm (λ ex = 420 nm) was observed with addition of 1equiv Al 3+ , which was attributed to the inhibition of photoinduced electron-transfer (PET) phenomenon and C N isomerization process. With the fluorescence titration experiments and the ESI-MS spectrum data, we reached the conclusion that the binding ratio between L and Al 3+ was 2:1. Besides, the binding constant (K a ) between L and Al 3+ was calculated to be 9.24 × 10 3 M −1 and the detection limit of L for Al 3+ was as low as 1.82 × 10 −7 M." @default.
- W2758330305 created "2017-10-06" @default.
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- W2758330305 date "2018-01-01" @default.
- W2758330305 modified "2023-10-16" @default.
- W2758330305 title "A new off-on fluorescent sensor for the detection of Al(III) based on a chromone-derived Schiff-base" @default.
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- W2758330305 doi "https://doi.org/10.1016/j.ica.2017.09.051" @default.
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