Abstract
Fluorescence sensitization of a 2,2′-([1,1′-biphenyl]–4,4′-diyldi-2,1-ethenediyl)-bis-benzenesulfonic acid disodium salt (Stilbene 3) solution in ethanol (EtOH) due to the presence in aqueous solution of ammonia is reported here. In this study sensitization of the dye solution due to the presence of ammonia was observed. It was also found that the observed sensitization is dynamic in nature. Sensitization of the fluorescence of the indicator also has full reversibility. An optical sensor for the detection of ammonia could thus be constructed using these properties of the dye and the sensitizer.
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