Add time:07/12/2019         Source:sciencedirect.com

A series of new 2-aminoethoxy and carbamoyloxy substituted calix[4]arenes and calix[6]arenes has been synthesized and used to complex Eu3+ and Tb3+ ions. Emissive complexes in methanol solvent are obtained. The Tb3+ complexes are strongly emissive from a terbium centered excited state. The excited states of the calix[6]arene complexes are less effectively quenched by the addition of water than are those having the calix[4]arene ligands.

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