Ortho-phenylenediamine-based open and macrocyclic receptors have been designed and synthesized. The open receptor 1 and the macrocyclic receptor 2 fluorimetrically distinguish H2PO4− from the other anions examined in CH3CN with appreciable binding constant values. As practical applications, they are also sensible to nucleotides in aq. CH3CN (1:1, v/v). The receptor 1 shows significant emission change upon complexation of ATP and ADP. ADP is selectively distinguished by a ratiometric change in emission. In contrast, the macrocyclic receptor 2, under similar conditions, shows good binding with ATP over the others.
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Organic & Biomolecular Chemistry
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