An effective phthalazine-imidazole-based chemosensor for detecting Cu2+, Co2+ and S2− via the color change

Chelation therapy-inspired design of a water-stable fluorescent probe for the effectual monitoring of copper(ii) ions in real water

“…The results account for the effectiveness of SW2 as a limited example of a chemosensor for the Cu 2+ ions and showed distinct reversibility upon S 2− ion addition in aqueous media. 56,57…”

“…The results account for the effectiveness of SW2 as a limited example of a chemosensor for the Cu 2+ ions and showed distinct reversibility upon S 2− ion addition in aqueous media. 56,57 Isolation of the SW2-Cu 2+ complex and its characterization To justify the effectiveness of the chemosensing behaviour of SW2 towards Cu 2+ ion, the SW2-Cu 2+ chelate was synthesized by a 1 : 1 reaction between hydrated CuCl 2 with SW2 under a stirring condition for 30 min. The yellowish-brown reaction mixture was kept to evaporate to dryness to obtain SW2-Cu 2+ chelate in the solid state.…”

A novel “on–off–on” near-infrared fluorescent probe for Cu2+ and S2− continuous detection based on dicyanoisoflurone derivatives, and its application in bacterial imaging

“…At present, organic fluorescent probes designed for the detection of Cu 2+ based on different fluorophores have been reported, including coumarin, 20 fluorescein, 21 phthalazine, 22 imidazole 23 and BODIPY. 24 However, most probes emit wavelengths in the short-wave range, 25,26 so they are less penetrating to biological tissues and can only be used to detect Cu 2+ , while applications at the biological level are relatively rare.…”

Zinc ion detection using a benzothiazole-based highly selective fluorescence “turn-on” chemosensor and its real-time application

“…Benzothiazole [43][44][45][46][47][48][49][50][51] and imidazole [52][53][54][55][56][57][58] derivatives have been intensively implemented in the development of optical chemosensors due to their easy functionalization and photostability. They are particularly effective in chelating metal ions because of sulfur, oxygen, and nitrogen atoms with lone-pair of electrons.…”