A colorimetric, ultraviolet absorption and fluorescence three-signal probe based on bis-carbazole for Al3+ detection and the application in cell imaging

Schiff Bases and Multidentate Organic Compounds as Fluorescent Sensors of Al3+: Photophysical, Fluorescent Bioimaging and the Mechanisms

“…[142] One of the complex was the Schiff-base, [9-(2-Chloro-ethyl)-9H-carbazol-3-yl-methylene]-(9-ethyl-9H-carbazol-3-yl)-amine (L66), which was highly selective and sensitive for the detection of Al 3 + . [143] The spectral changes were detected only in the presence of Al 3 + and the maximum emission peak shifted from 463nm to 372nm. The "turn-on" fluorescence enhancement was the result of the structure braking, generating a carbazole aldehyde and carbazole amine complex in the presence of Al 3 + and cancel the PET process.…”

“…It has been investigated by Liu and collaborators as an excellent fluorophore ( L65 ) for the construction of chemo sensor for Al 3+ [142] . One of the complex was the Schiff‐base, [9‐(2‐Chloro‐ethyl)‐9H‐carbazol‐3‐yl‐methylene]‐(9‐ethyl‐9H‐carbazol‐3‐yl)‐amine ( L66 ), which was highly selective and sensitive for the detection of Al 3+ [143] . The spectral changes were detected only in the presence of Al 3+ and the maximum emission peak shifted from 463nm to 372nm.…”

Rapid and Visual Detection of Al3+ Based on Supramolecular Self‐Assembly of a Water‐Soluble Perylene Diimide Derivative

“…In addition to these traditional methods, organic‐materials and nano‐materials fluorescent probes have caused tremendous concern owing to their easy accessibility, rapid response, and good observability [17–20] . However, compared with fluorescent probes to other transition metal cations, fluorescent probes to monitor Al 3+ are still very rare since Al 3+ lacks spectral characteristics and its coordination ability is poor, [21,22] such as carbon dots, [23] rhodamine‐based organic nanorods, [24] Schiff base compound, [25,26] and photochromic diarylethene [27] . And many of them have problems with hard synthesis, poor water solubility, high cost, etc.…”

A new phenothiazine‐based fluorescence sensor for imaging Hg2+ in living cells

“…Mercury is a heavy metal that is easily absorbed by the body in the form of ions and is difficult to degrade in living organisms. [ 1–3 ] Hg 2+ easily accumulates in the human body through the food chain, causing a series of health problems, [ 4,5 ] such as digestion, heart, kidney, DNA, mitotic damage and permanent damage to the nervous system. [ 6–8 ] Mercury is widely used in industrial production, [ 9 ] and the production volume has increased sharply.…”

“…[ 34 ] In this paper, phenothiazine was used as a raw material to react with ethyl mercaptan [ 35 ] after inserting ethyl and aldehyde groups to synthesize a thiol probe with good selectivity and high sensitivity to mercury ions. [ 1,36 ]…”