An α-naphtholphthalein-derived colorimetric fluorescent chemoprobe for the portable and visualized monitoring of Hg²⁺by the hydrolysis mechanism

Abstract

A novel fluorescent probe, 3,3'-(((1E,1'E)-((3-oxo-1,3-dihydroisobenzofuran-1,1-diyl)bis(1-hydroxynaphthalene-4,2-diyl))bis(methaneylylidene))bis(azaneylylidene))bis(2-aminomaleonitrile) (PM) was designed and successfully synthesized by Duff and Schiff-base condensation reactions, which consists of an α-naphtholphthalein scaffold and dual diaminomaleonitrile moieties. PM can be...

A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid

“…It should be noted that eqn (10) is an approximation because only the first term of the Taylor series in eqn ( 8) is used. Anyway, eqn (10) is also helpful to explain the near-linear correlations between the light intensity or hue of the colorimetric images and concentration of target analytes in visible regions, [37][38][39][40][41][42][43][44][45] which are also due to the non-linear response of the CCD in the camera to light intensity (eqn (3)). But the value of G 3 is dependent on the values of G 1 and G 30 .…”

Thermodynamics of Ag(I) Complex Formations with 2-Mercaptoimidazole in Water−Dimethyl Sulfoxide Solvents

“…A new fluorescent probe based on 3,3 -(((1E,1'E)-((3-oxo-1,3-dihydroisobenzofuran-1,1-diyl)bis(1-hydroxynaphthalene-4,2-diyl)))bis-(methanilyl-den))bis(azanilidene))bis-(2aminomaleonitrile) (PM) for the determination of Hg 2+ in an aqueous solution of THF was developed [10]. Thanks to its excellent fluorimetric properties, a portable smart platform with smartphone support was created for convenient, cost-effective, and reliable Hg 2+ detection.…”