Imine modified ZnO nanoparticles: a luminescent chemodosimeter for Al³⁺ and S²⁻ ions based on ligand displacement reaction

Abstract

A novel fluorescent chemosensor for rapid recognition of Al3+ and S2− ions using imine capped ZnO nanoparticles in aqueous media.

A Novel Selective “Turn‐On” Fluorescent Chemosensor Based on Thiophene Appended Cyclotriphosphazene Schiff Base for Detection of Ag+ Ions

“…Therefore, the coordination of Ag + ion with N‐atom of compound 2 can inhibit the non‐fluorescent PET process. Simultaneously, chelation of Ag + ions with Schiff base moiety blocked to free rotation of C=N and synergistic effect of CHEF also led to the “turn on” fluorescence responses [23a,30] . To get deeper information about the interaction mechanism of Ag + with compound 2 , Job's analysis was used for the evaluation of chemical stoichiometry by fluorescence spectroscopy.…”

Density of Grafted Chains in Thioglycerol-Capped CdS Quantum Dots Determines Their Interaction with Aluminum(III) in Water

“…In our system, the Al 3+ ions are inferred to bind also to −HO groups of TG, inducing a quenching of QD FL. So far, only ZnO semiconductor nanoparticles functionalized with imine groups have been reported 63 to interact with Al 3+ . However, they interact with all other cations so that the FL increase cannot be specific.…”

Dehydroacetic acid derived Schiff base as selective and sensitive colorimetric chemosensor for the detection of Cu(II) ions in aqueous medium

“…The competitive studies were conducted for 50 M (Figure 9), 100 M and 150 M of competitive ions (Figure S2). As clear from figure 9, no significant interference was observed for any cationic species [40,47,48]. This capability of the probe DHB to exclusively sense the Cu 2+ even with the simultaneous presence of other metal ions entitles its suitability as a useful copper sensor.…”