RSC Adv
August 2025
Rhodamine dye has a high absorption coefficient, fluorescence quantum yield, photostability, and extended wavelengths that make it a promising fluorescent probe. A rhodamine and functionalised azobenzene condensed novel chemosensor L has been reported for the first time to detect Hg in aqueous ethanol optically in this investigation. Chemosensor L's fluorescence activation in response to Hg is due to the suppression of PET and CHEF processes and the change from spirolactam to ring-opened amide.
View Article and Find Full Text PDFHerein we describe a quinoxaline mono Schiff base, synthesised from benzil and o-phenylene diamine that may be used as a fluorescent-colourimetric chemosensor to detect Ag ions in organic media with high selectivity and sensitivity over other competitive ions. The sensing processes were operated by visual change, absorption, and emission measurements, and the binding sites were confirmed by FTIR and single-crystal structure of the Ag(I)- complex. From Job-plot analysis, ESI-mass spectra and XRD studies 1:2 binding stoichiometry between host-guest was observed.
View Article and Find Full Text PDFChem Asian J
August 2025
In this research, a novel dual chemosensor L has been reported. It has been characterised by FTIR, H-NMR, ESI-MS, elemental analyses, X-ray single crystal analysis and DFT studies. In a 1:1 methanol-water medium (v/v), the receptor L detected Ni with color change from colorless to yellow and Ag with turn-on fluorescence enhancement.
View Article and Find Full Text PDFBackground: Acute agitation is a common presentation in the emergency department (ED), often managed with haloperidol. This study aimed to compare the efficacy and safety of olanzapine versus haloperidol for the initial treatment of acute agitation in the ED.
Objectives: Primary outcome was adequate sedation at 15 minutes, defined as Altered Mental Status (AMS) score of zero or less.
Spectrochim Acta A Mol Biomol Spectrosc
September 2025
Following a simple synthetic process, a new pyrene derivative with a benzildihydrazone moiety has been synthesised and used for selective detection of Hg across four distinct channels (colorimetric, absorption, emission, and bio-imaging). When Hg was present, the chemosensor L exhibited a noticeable increase in fluorescence, changing colour from yellow to colourless, while other metal ions only caused slight variations in fluorescence intensity as well as colour. The fluorescent-based assay's sensitivity for Hg is 1.
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