Impressive europium red emission induced by two-photon excitation for biological applications

Inorg Chem. 2011 Jun 20;50(12):5309-11. doi: 10.1021/ic102465j. Epub 2011 May 16.

Abstract

Three triazine-based europium(III) complexes were synthesized that demonstrated strong two-photon induced europium emission with a high two-photon absorption cross-section. The modified triazine ligand of complex 3 initiated over 100% enhancement of the two-photon absorption cross-section (σ(2): 320 GM) when compared with complex 1 (σ(2): 128 GM) in a solution of DMSO. Europium complex 3 is also stable in vitro, and power-dependence curves were obtained in vitro to confirm the two-photon-induced f-f emission in HeLa cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Energy Transfer
  • Europium / chemistry*
  • HeLa Cells
  • Humans
  • Ligands
  • Luminescence
  • Luminescent Measurements
  • Molecular Imaging*
  • Molecular Structure
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Photons*
  • Quantum Theory
  • Stereoisomerism
  • Triazines / chemistry

Substances

  • Ligands
  • Organometallic Compounds
  • Triazines
  • Europium