The synthesis of picolyl-armed 1,3-alternate calixareneazacrown ethers was discussed. 2-picolyl-armed calixazacrown ether showed the highest selectivity for silver ion, based on two-phase extraction, bulk liquid membrane, H nuclear magentic resonance (NMR) and solid state studies on the ligand-metal complexation. This effect was due to electrostatic interaction through effective three-dimensional encapsulation assisted by the nitrogen atom of the 2-picolyl group.
|Number of pages||6|
|Journal||Journal of the Chemical Society. Perkin Transactions 1|
|Publication status||Published - 2001 Jan 7|
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