Di- and tetracarboxylate ligands for highly luminescent terbium(III) complexes on the basis of sulfonylcalix[4]arene scaffold

Takayuki Horiuchi, Nobuhiko Iki, Hitoshi Hoshino, Chizuko Kabuto, Sotaro Miyano

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

New di- (2) and tetracarboxylate ligands (4) were prepared on a sulfonylcalix[4]arene platform by O-alkylation of thiacalix[4]arene with ethyl bromoacetate, followed by hydrolysis of the ester function and oxidation of the sulfide bridges. The sulfonyl-based ligands 2 and 4 formed luminescent 1:1 complexes with terbium(III) ion having higher luminescent quantum yield (Φ = 0.291 and 0.287, respectively) than 1:1 complexes of the corresponding thiacalix[4]arene-based di- (1) and tetracarboxylate ligands (3) (Φ = 0.038 and 0.003, respectively), implying higher efficiency of sulfonyl ligands (2 and 4) than those of thia ligands (1 and 3) in the energy transfer process.

Original languageEnglish
Pages (from-to)821-825
Number of pages5
JournalTetrahedron Letters
Volume48
Issue number5
DOIs
Publication statusPublished - 2007 Jan 29

Keywords

  • Calixarenes
  • Ligand
  • Luminescence
  • Terbium

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Di- and tetracarboxylate ligands for highly luminescent terbium(III) complexes on the basis of sulfonylcalix[4]arene scaffold'. Together they form a unique fingerprint.

  • Cite this