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We synthesized three chelate‐tethered purine ligands, having a Schiff base linkage at the N9 position, which resulted in the dipolar imine‐methoxyphenol adenine Schiff base HL1, the 2‐aminopurine Schiff base HL2, and the 2,6‐diaminopurine Schiff base HL3. These ligands selectively showed enhancement of the fluorescence of the zinc ions. The imine‐based compound HL1 chelated with zinc ions to give...
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