Bichromophoric naphthalene derivatives of diethylenetriaminepentaacetate (DTPA): fluorescent response to H⁺, Ca²⁺, Zn²⁺, and Cd²⁺

Recent progress in cadmium fluorescent and colorimetric probes

“…23 ). 29 They inserted –CH 2 – between the DTPA (diethylenetriaminepentaacetate) and the naphthalene chromophore to make the complex stable and have little impact on the environment when Cd 2+ was detected by sensor 65. Furthermore, sensor 65 can distinguish Zn 2+ and Cd 2+ , and without fluorescence quenching caused by paramagnetic effect.…”

“…Fluorescent sensors consist of uorophore (signalling) and receptor (guest binding) moieties, either separated by a spacer or integrated into one unit. 29,30 Common uorophores are rhodamine, naphthalimide, coumarin, quinolone, BODIPY, benzothiazole, uorescein, diarylethylene. 4,16,17,19,21,22,[31][32][33][34] Common receptors are pyridine and its analogues, and other structures containing O, N, S and other heteroatoms.…”

A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres

“…These chemosensors can be induced by the Cd 2+ ion and exhibit naked-eye changes in fluorescence. High sensitivity, high selectivity, instantaneous response and simplicity are the greatest advantages of these probe molecules [ 7 , 8 , 9 , 10 ]. However, these chemosensors for Cd 2+ are meant to be disposable and for single use only, and they are difficult if not impossible to recycle.…”