Cyclometallated platinum(II) complexes incorporating ethynyl-flavone ligands: switching between triplet and singlet emission induced by selective binding of Pb2+ ions

Pierre-Henri Lanoë; Jean-Luc Fillaut; Loïc Toupet; J A Gareth Williams; Hubert Le Bozec; Véronique Guerchais

doi:10.1039/b806935b

Cyclometallated platinum(II) complexes incorporating ethynyl-flavone ligands: switching between triplet and singlet emission induced by selective binding of Pb2+ ions

Chem Commun (Camb). 2008 Sep 28:(36):4333-5. doi: 10.1039/b806935b. Epub 2008 Jul 16.

Authors

Pierre-Henri Lanoë¹, Jean-Luc Fillaut, Loïc Toupet, J A Gareth Williams, Hubert Le Bozec, Véronique Guerchais

Affiliation

¹ Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes, France.

PMID: 18802561
DOI: 10.1039/b806935b

Abstract

Platinum-ethynylflavone complexes featuring various polyether arms display 3IL phosphorescence associated with the appended flavone perturbed by the platinum centre (tau approximately 20 micros), but switch dramatically to flavone-localised 1IL fluorescence (tau approximately 2 ns) upon selective binding of Pb2+.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Alkynes / chemistry*
Binding Sites
Crystallography, X-Ray
Flavones / chemistry*
Fluorescence
Ions / chemistry
Lead / chemistry*
Ligands
Luminescent Measurements
Models, Molecular
Molecular Structure
Organoplatinum Compounds / chemical synthesis*
Organoplatinum Compounds / chemistry*
Spectrometry, Fluorescence

Substances

Alkynes
Flavones
Ions
Ligands
Organoplatinum Compounds
Lead