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Aldrey, Anxela
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article
Novel emissive phenylurea-based macrocyclic chemosensor: Synthesis, fluorescent and complexation studies
Abstract
<p>A new emissive macrocycle ligand bearing three phenylurea groups (L <sup>1</sup>) has been synthesized and fully characterised. Several mononuclear complexes with nitrate, perchlorate and tetrafluoroborate salts of transition and post-transition metals (Cu <sup>2+</sup>, Ni <sup>2+</sup>, Co <sup>2+</sup>, Zn <sup>2+</sup> and Cd <sup>2+</sup>) were synthesized and characterised. For comparative purposes, the coordination ability of two nonfluorescent macrocyclic ligands (L <sup>2</sup> and L <sup>3</sup>) containing three nitrophenylurea pendant-arms towards the same metal ions were studied. The interaction with transition and post-transition metal ions, and anions was explored in solution by UV-Vis and emission spectroscopy with ligand L <sup>1</sup>. All new compounds were characterised by microanalysis, IR, UV-Vis and fluorescence emission, FAB and ESI mass spectrometry and conductivity measurements.</p>