Synthesis, characterization, and fluorescence behavior of four novel macrocyclic emissive ligands containing a flexible 8-hydroxyquinoline unit

Cristina Núñez, Rufina Bastida, Alejandro Macías, Emilia Bértolo, Luz Fernandes, José Luis Capelo, Carlos Lodeiro

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Four emissive macrocyclic ligands mono-substituted with an 8-hydroxyquinoline pendant arm are presented. The new compounds have been used for metal-ion detection, which results from the competition between PET (photo-induced electron transfer) and PPT (photo-induced proton transfer) mechanisms. Solid metal complexes with divalent Cu(II), Zn(II), and Cd(II), and trivalent metal ions Al(III) and Cr(III) have been also synthesized and characterized. The compounds have been isolated as mononuclear or dinuclear (Cu(II)) complexes, confirming the stoichiometry observed in solution.

Original languageEnglish
Pages (from-to)6179-6188
Number of pages10
JournalTetrahedron
Volume65
Issue number31
DOIs
Publication statusPublished - 1 Aug 2009

Keywords

  • 8H-Quinoline
  • Aluminum(III)
  • Chemosensor
  • Chromium(III)
  • Fluorescence
  • Zinc(II)

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