A novel fluorescent probe based on the flexible dipicolylamine: Recognizing zinc(II) in aqueous solution and imaging in living cell

An effective ICT-based and ratiometric fluorescent probe for sensing sulfite

“…Benzimidazole derivatives have frequently been used as the fluorescent probes for metal ions or pH [36][37][38][39][40][41]. Recently, we reported a coumarin-benzimidazole probe for the detection of bisulfite [7].…”

Aggregation‐Induced Emission (AIE) Fluorophore Exhibits a Highly Ratiometric Fluorescent Response to Zn2+ in vitro and in Human Liver Cancer Cells

“…The development of highly selective and sensitive fluorescent chemosensors for the imaging of “mobile” or “free” Zn 2+ also remains a vibrant area of research due to the pivotal role it plays in a number of important biological processes, such as brain activity, gene transcription, immune function and in reproductive systems . Although a very wide variety of chemosensors have been reported for the detection and intracellular imaging of Zn 2+ , most of them exhibit a simple non‐ratiometric switch on fluorescence response. In addition the majority of the systems that do display a ratiometric response to Zn 2+ suffer from interference with other heavy‐ and transition‐metal ions like Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , Hg 2+ and Cd 2+ .…”

A new fluorescent probe for colorimetric and ratiometric detection of sulfur dioxide derivatives in liver cancer cells

“…Alternatively, fluorometric analysis has emerged in recent years, which could be used to detect analytes with high sensitivity and high accuracy910. More importantly, in situ and real-time imaging of analytes could be carried out by non-destructive fluorescent probes1112.…”

“…By now, two detection mechanisms have been reported in the design of fluorescent probes for HSO 3 − /SO 3 2− : reactions with HSO 3 − /SO 3 2− and hydrogen-bond formation with HSO 3 − /SO 3 2345678910111213141516. The reactions with HSO 3 − /SO 3 2− include cleavage of levulinate group1718, nucleophilic addition to aldehyde group1920 or “C=C” double bond2122232425262728293031.…”