A new fluorescent sensor based on a dimethylxanthene skeleton has beensynthesized. Because of its oxyanion hole structure, this receptor includes a suitablecavity for the association of carboxylic acids. The receptor's fluorescence is quenchedupon addition of dinitrobenzoic acid.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3663016PMC
http://dx.doi.org/10.3390/s8031637DOI Listing

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