Fluorimetric Detection of Zn2+, Mg2+, and Fe2+ with 3-Hydroxy-4-Pyridylisoquinoline as Fluorescent Probe

Abstract

The suitability of 3-hydroxy-4-pyridylisoquinoline to operate as fluorescent chemosensor for the detection of metal ions was investigated. For that purpose, the interactions of the title compound with selected metal ions were investigated by absorption and emission spectroscopy. The complexation of Zn2+, Fe2+, Mg2+ with 1:1 and 2:1 stoichiometry leads to characteristic optical responses that depend significantly on the employed solvents, thus allowing for the fluorimetric identification and detection of particular metal cations in a matrix-based pattern analysis or by fluorimetric titrations. Graphical abstract

Aggregation‐induced emission‐active poly (β‐lactam) prepared by Staudinger polymerization as specific probe to Fe3+ ions and its antimicrobial properties

“…In recent years, AIE‐active polymers have been widely used in various fields such as optoelectronic materials, bioimaging, and chemical sensors 31 . As well know, the fluorescent chemical sensors have many advantages in detection, such as simple operation, high sensitivity, and strong selectivity 32 . Small‐molecule sensors have been widely used, but small‐molecule chemical sensors are prone to photobleaching, which makes them difficult to use for a long time or repeatedly, namely the increased cost of detection or a waste of resources 33 .…”

“…31 As well know, the fluorescent chemical sensors have many advantages in detection, such as simple operation, high sensitivity, and strong selectivity. 32 Small-molecule sensors have been widely…”

Aggregation-induced emission (AIE) from poly(1,4-dihydropyridine)s synthesized by Hantzsch polymerization and their specific detection of Fe2+ ions

“…Due to the need for specific detection in complex environments, fluorescent measurements are widely used in ion detection. [16][17][18][19] However, Fe 2+ ions are more reactive and harder to detect than Fe 3+ ions. At present, most common fluorescent probes for iron ions target Fe 3+ ions and are mainly based on small-molecule compounds.…”