A selective fluorescent probe based on bis-Schiff base for “turn-on” detection of Al³⁺and cysteine by different mechanisms

Abstract

A novel fluorescent sensor L based on phenolphthalein derivative bis-Schiff base for “turn-on” detection of Al3+ and cysteine on different mechanisms.

A highly sensitive and selective fluorescent probe for quantitative detection of Al3+ in food, water, and living cells

“…Compared to traditional detection methods, a uorescent probe has become one of the most widely used tools for detecting metal ions. [13][14][15] In the past few years, many uorescent probes for Al 3+ detection have been reported. [16][17][18][19][20][21][22][23][24][25] However, there are still some shortcomings in reported Al 3+ uorescent probes, including a complex synthesis process, poor selectivity and sensitivity, easy interference by other metal ions, Zn 2+ , Cu 2+ , Cr 3+ , Hg 2+ , and even F À , [26][27][28][29][30] and lack of applicability to water samples and food samples.…”

Pseudo‐Crown Ethers as Novel Scaffolds for the Development of Al3+‐Selective Fluorescent Probes

“…Probes 8 , 11 , and 12 remain silent in the presence of numerous alkali and alkaline earth metal ions, including biologically essential Mg 2+ , Ca 2+ , and Fe 3+ . This sensing behavior is highly selective and complex absorption/emission maxima are higher than the average values . Thus, our sensor molecules can be used for the ratiometric detection of Al 3+ in analytical samples in acetonitrile, just as the 2‐((2‐(2‐acetoxyethoxy)ethyl)amino)ethyl acetate chelator can find application as a readily available chelator for the development of Al 3+ ‐selective fluorescent probes.…”

Zinc(ii) Schiff base complexes as dual probes for the detection of NH4+ and HPO42− ions

“…S17, ESI †). It can be shown that with the addition of Zn(II), the fluorescence emission peaks were blue-shifted and the fluorescence was increased, which can be attributed to the inhibition of the intramolecular charge transfer (ICT) process in the ligand 46 and chelate fluorescence enhancement effect (CHEF), 19,52,53 respectively. 1 H NMR titration spectra indicated that the proton peaks on the methine and aromatic regions show obvious shift with the addition of Zn 2+ in the range of 0-2.0 equiv.…”