The microwave synthesis of twenty quaternary ammonium salts is described. The syntheses feature comparable yields to conventional synthetic methods reported in the current literature with reduced reaction times and the absence of solvent or minimal solvent.
Colorimetric/fluorometric optical chemosensors based on oxazolidine for highly selective detection of Fe3+ and Ag+ in aqueous media: Development of ionochromic security papers
applications as highly-selective and sensitive optical chemosensors for detection of metal ions. The results showed colorimetric and fluorometric photodetection of Fe3+ ions in aqueous solution, where OX2-NaPh displayed selective photodetection of Ag+ in addition to Fe3+. For the development of paper-based colorimetric/fluorometric metal ion chemosensors and also high-security anticounterfeiting technology