A Significant Fluorescence Turn-On Probe for the Recognition of Al3+ and Its Application

Abstract

An easy prepared probe, BHMMP, was designed and synthesized, which displayed a significant fluorescence enhancement (over 38-fold) and obvious color change in the recognition of Al3+. The binding ratio of probe BHMMP to Al3+ was determined as 1:1, according to Job plot. The binding mechanism was fully clarified by the experiments, such as FT-IR spectrum, ESI–MS analysis, and 1H NMR titration. A DFT study further confirmed the binding mode of BHMMP to Al3+. The limit of detection (LOD) for Al3+ was determined as low as 0.70 µM, based on the fluorescence titration of BHMMP. Moreover, the results from real sample experiments, including real water samples, test papers, and cell images, well-demonstrated that BHMMP was capable of sensing Al3+ in environmental and biological systems.

A Novel AIE-active Salicylaldehyde-Schiff Base Probe with Carbazole group for Al 3+ Detection in Aqueous Solution

“…The O/ N-rich Schiff based fluorescent probes have rich hard alkaline centers and can provide binding sites for hard acid Al according to HSAB [26] . The aluminum ion binding through O donor site and the C=N moiety of BKS restricted C=N isomerization [27] .…”

A novel isophorone-based fluorescent probe for recognizing Al3+ and its bioimaging in plants

“…In this paper, a novel isophorone-based uorescent probe, YT-Al, which has a high selective recognition of Al 3+ , was designed and synthesised. Compared with other reported uorescent probes, 20,23,33 the malononitrile-isophorone uorescent probe was used in this study because of its relatively simple synthesis process and similar uorescence properties, which is favourable for wide application. [27][28][29] The dicyanoisophorone derivatives themselves have excellent near-infrared uorescence emission properties.…”

Furoic Acid-Capped LaF3:Tb Nanoparticles for Al3+ Detection Based on Aggregation-Induced Luminescence Enhancement

“…On the other hand, the Al 3+ ion is a hard acid that prefers to bind through hard donor sites of the chelating groups such as oxygen (O) and nitrogen (N) atoms. Utilizing this phenomenon, over the past few years, several research groups have developed a variety of fluorescent materials and methods for detecting Al 3+ ions based on organic dyes such as quinoline, , coumarin-naphthol, pyrene, , benzothiazole, , benzoindole, isophorone, naphthalene, naphthalimide, picolinohydrazide-based Schiff’s base components, and rhodamine derivatives . Huang et.…”