A sensitive Schiff-base fluorescent indicator for the detection of Zn2+

Spectrophotometric and spectrofluorimetric investigation of different equilibria of a recently synthesized Schiff base with the aid of chemometric methods

“…This is because of paramagnetic characteristic of these transition metals and their corresponding formed complexes with PBHP, which increases intersystem crossing, therefore the fluorescence intensity decreases. Zn 2 þ increased the fluorescence intensity of the Schiff base because of a combinational effect of chelation enhanced fluorescence (CHEF) and CQN isomerization mechanism [28]. In CHEF effect, the reaction of a metal ion with a chelating agent induces rigidity in the resulting molecule and tends to produce fluorescence.…”

The Novel Poly(azomethine-urethane): Synthesis, Morphological Properties and Application as a Fluorescent Probe for Detection of Zn2+ Ions

“…Zn 2? plays a significant role in various physiological and pathological processes such as gene expression, enzyme regulation, neurotransmission, apoptosis regulation [7], DNA binding or recognition [8], neural signal transmission [9] and brain function [10]. Additionally, Zn 2?…”

Synthesis and luminescence properties of novel 4-(N-carbazole methyl) benzoyl hydrazone Schiff bases

“…Schiff base derivatives incorporating a fluorescent moiety are an appealing tool for optical sensing of metal ions [12]. The synthesis of Schiff bases and their complexes as the fluorescent materials has also received extensive concern [13].…”