Cationic heteroleptic cyclometalated iridium(III) complexes containing phenyl-triazole and triazole-pyridine clicked ligands

Molecules. 2010 Mar 23;15(3):2039-59. doi: 10.3390/molecules15032039.

Abstract

Novel heteroleptic iridium complexes containing the 1-substituted-4-phenyl-1H-1,2,3-triazole (phtl) cyclometalating ligand have been synthesized. The 3+2 Huisgen dipolar cycloaddition method ('click' chemistry) was utilized to prepare a class of bidentate ligands (phtl) bearing different substituents on the triazole moiety. By using various ligands (phtl-R1 and pytl-R2) (R1 = adamantane, methyl and R2 = adamantane, methyl, beta-cyclodextrin, ursodeoxycholic acid), we prepared a small library of new luminescent ionic iridium complexes [Ir(phtr-R1)2(pytl-R2)]Cl and report on their photophysical properties. The flexibility of the clicking approach allows a straightforward control on the chemical-physical properties of the complexes by varying the nature of the substituent on the ligand.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromatography, High Pressure Liquid
  • Iridium / chemistry*
  • Ligands
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Molecular Structure
  • Pyridines / chemistry*
  • Spectrophotometry, Ultraviolet
  • Triazoles / chemistry*

Substances

  • Ligands
  • Pyridines
  • Triazoles
  • Iridium