Cyclometallated platinum(II) complexes incorporating ethynyl-flavone ligands: switching between triplet and singlet emission induced by selective binding of Pb2+ ions.
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+.
Lanoë
Pierre-Henri
PH
Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes, France.
Fillaut
Jean-Luc
JL
Toupet
Loïc
L
Williams
J A Gareth
JA
Le Bozec
Hubert
H
Guerchais
Véronique
V
D000480:Alkynes / Q000737:chemistry*; D001665:Binding Sites; D018360:Crystallography, X-Ray; D047309:Flavones / Q000737:chemistry*; D005453:Fluorescence; D007477:Ions / Q000737:chemistry; D007854:Lead / Q000737:chemistry*; D008024:Ligands; D008163:Luminescent Measurements; D008958:Models, Molecular; D015394:Molecular Structure; D009944:Organoplatinum Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
D000480:Alkynes; D047309:Flavones; D007477:Ions; D008024:Ligands; D009944:Organoplatinum Compounds; D007854:Lead