Exploring the luminescent sensing of anions by the use of an urea functionalized 1,10-phenanthroline (phen) based (3:1) Eu(III) complex

Thorfinnur Gunnlaugsson (1) , Cidalia dos Santos (1)

1 Chemistry

The design, synthesis and photophysical evaluation of the Eu(III) complex 13Eu, formed from the aryl-urea based 1,10-phenanthroline (phen) heteroditopic receptor 1, is descried. The complex, which was formed in 3:1 [ligand:Eu(III)] stochiometry, was used to sense anions such as acetate, phosphate and halides, in CH3CN. Here, the mechanism for the sensing of these anions by 13Eu was through hydrogen bonding at the urea moiety, and in the case of F‾, also by the displacement of metal bound water molecules. Both these binding modes gave rise to significant modulation in spectroscopic output of the Eu(III) complex.

Mots clés: Physical Sciences

Thorfinnur Gunnlaugsson, Cidalia dos Santos. Exploring the luminescent sensing of anions by the use of an urea functionalized 1,10-phenanthroline (phen) based (3:1) Eu(III) complex. Supramolecular Chemistry, 2009, 21 (01-02), pp.173-180. ⟨10.1080/10610270802588285⟩. ⟨hal-00513551⟩