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The new ligands 13-anthrylmethyl-7-ferrocenylmethyl-1,4,10-trioxa-7,13-diaza-cyclopentadecane (L 1 ) and 1-anthrylmethyl-4,8,11-ferrocenylmethyl-1,4,8,11-tetraaza-cyclotetradecane (L 2 ) have been synthesised, characterised, and their potential activity as chemosensors towards the metal cations Ni 2+ , Cu 2+ , Zn 2+ , Cd 2+ , Hg 2+ and Pb 2+ studied in 1,4-dioxane/water (70:30, v/v). Both ligands L 1 and L 2 are difunctionalised receptors containing redox-active (ferrocene) and fluorescent (anthracene) signalling subunits. The crystal structures of [H 2 L 1 ][PF 6 ] 2 and [CuL 2 ][PF 6 ] 2 were determined by single-crystal X-ray procedures. Potentiometric experiments in dioxane/water (70:30, v/v; 0.1 M KNO 3 ; 25.0 ± 0.1°C ) for L 1 and L 2 allowed the determination of protonation constants and complex stability constants with the Cu 2+ and Pb 2+ metal ions. They form stable complexes with both ligands and show stability constants with values close to those reported for similar complexes. The electrochemical and fluorescence behaviour of L 1 and L 2 was studied as a function

The synthesis and characterisation of a family of multi-channel receptors containing crown-cation binding sites anchored to a 1-aminophenyl-1,2,2-tricyanoethylene group is reported. The ligands L 1 -L 6 bear a 1-aminophenyl-1,2,2-tricyanoethylene scaffolding which is simultaneously a redox-active group (showing reduction processes at moderately modest potentials) and an acceptor moiety in the 1-aminophenyl-1,2,2-tricyanoethylene chromophore.

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