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Synthesis and complexation properties of aromatic diureas and phenantroline ditopic receptor

The design of molecules which are capable to recognize and bind target anions is a vibrant area of modern research. Systematic studies of anion coordination during the last few decades introduced a vast number of receptors for negatively charged species, mainly based on the binding functionalities containing hydrogen bond donors. In this work we have synthesized phenyl diurea receptors (1a-d) and investigated both steric and resonance effects of the substituents on their complexation properties. Further on, a ditopic receptor 2 comprising the phenantroline moiety, which is capable of cation coordination, coupled with the diurea anion binding site was designed but its synthesis is still a work in progress.

urea ; phenantroline ; anion receptors

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