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Two fluorescent ionophores of N-dansyl sym-(R)-dibenzo-16-crown-5-oxyacetamide HDAC (R=H) and PDAC (R=propyl) are developed for alkali metal cation sensing. Extraction of certain alkali metal cations into 1,2-dichloroethane by each ionophore result in a hypsochromic band shift and a fluorescence intensity increase in its emission spectrum. This fluorescent response is based upon the proton-ionizable...
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