Synthesis, complexation and spectrofluorometric studies of a new NS 3 anthracene-containing macrocyclic ligand

Abel Tamayo, Lluis Escriche, Jaume Casabó, Berta Covelo, Carlos Lodeiro

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A new fluorescent device for detecting protons and metal ions, 11-(9-anthracenylmethyl)-1,4,7-trithia-11-azacyclotetradecane (L), has been synthesised. In addition, the photophysical properties of both the free and protonated species have been examined by absorption and fluorescence titrations of dichloromethane solutions of L with methanesulfonic acid. The coordinating properties of L toward PdII, ZnII, NiII and CoII have been studied both in solution and in the solid state. Different behaviours have been observed in the absorption and fluorescence titrations of L with the above-mentioned transition-metal ions. To evaluate whether these differences were due to the existence of equilibria between protonated and complexed species, such titrations have been repeated in the presence of an equivalent amount of acid. The structure of the [Pd(L)](BF 4)2 complex has been solved by X-ray crystallography.

Original languageEnglish
Pages (from-to)2997-3004
Number of pages8
JournalEuropean Journal of Inorganic Chemistry
Issue number15
DOIs
Publication statusPublished - 7 Aug 2006

Keywords

  • Fluorescence
  • Macrocycles
  • N,S ligands
  • Palladium
  • PET systems

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