An ESIPT based turn on fluorochromogenic sensor for low level discrimination of chemically analogous Zn2+ and Cd2+ & aqueous phase recognition of bio-hazardous CN-: From solution state analysis to prototype fabrication

Near‐Infrared Colorimetric and Ratiometric Fluorescence Sensor for Fluoride Ions

“…Benzothiadiazole has strong electron-withdrawing ability, while diphenylamine has strong electrondonating ability, these donor-acceptor (DÀ A) structures facilitated near-infrared (NIR) emission. The chemical structures were characterized by 1 H-NMR, 13 C-NMR, and MS (MALDI-TOF) and satisfactory results obtained (Figures S1-S6). According to 1 H-NMR spectra, the singlet peak at ∼ 9.43 ppm was attributed to the characteristic proton resonance from NÀ H in DPCN.…”

Recent endeavours in the development of organo chromo-fluorogenic probes towards the targeted detection of the toxic industrial pollutants Cu2+ and CN−: recognition to implementation in sensory device

“…The reliability of the present method was been verified using a UV-Vis spectrophotometer. 110 Banerjee et al 111 unveiled the versatile naphthalenebenzothiazole-based probe 78, which displayed the selective dual-channel colorimetric and fluorometric detection of aqueous CN À among a pool of other anions. The sensing mechanism was rationalized by ICT and the intermolecular H-bonding interaction pathway, which was well established by combined experimental and theoretical analysis.…”

Recent progress in cadmium fluorescent and colorimetric probes

“…9 ). 51 The donor part such as –C N enhances the reliability of the sensor, and the active functional group such as –OH improves the color detection efficiency of the sensor for the target analyte. Sensor 26 (1 × 10 −5 M, CH 3 CN) can recognize Cd 2+ in pure water by turning on fluorescence.…”