A multi-colorimetric probe to discriminate between heavy metal cations and anions in DMSO-HO with high selectivity for Cu and CN: study of logic functions and its application in real samples.

A ditopic multi-colorimetric probe based on the phenylpridyl-thioic moiety (EN) was synthesized a Schiff base reaction mechanism and characterized using H NMR and UV-vis spectroscopy. The colorimetric analyses carried out revealed that EN was capable of discriminating between a number of heavy metal cations coordination induced charge transfer, as well as between anions through hydrogen bonding induced charge transfer, in DMSO-HO (9 : 1). In particular, the ditopic probe could spectrally and colorimetrically recognize the most toxic heavy metal cations of Cd, Pb and Hg, among others, in DMSO-HO.

The C-Symmetry Colorimetric Dye Based on a Thiosemicarbazone Derivative and its Cadmium Complex for Detecting Heavy Metal Cations (Ni, Co, Cd, and Cu) Collectively, in DMF.

The field of chemosensing has been experiencing an exponential expansion in recent times, due to increased demands for simpler and user-friendly analytical techniques, in order to combat and confront the challenges of industrial pollutions in the twenty-first century. Metal complex-based chemosensors have received little attention while exhibiting excellent sensing properties, comparing to their organic counterparts. Thus, a thiosemicarbazone-based (H) and its cadmium complex (P) were synthesized, characterized and their photophysical and chemosensing properties were investigated in DMF solvent.