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Luminescent, three-coordinate azadipyrromethene complexes of d(10) copper, silver, and gold
Thomas S Teets1, David V Partyka, Arthur J Esswein
1Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA.
Abstract:
Boron azadipyrromethenes are red-light-absorbing dyes with chromophoric capabilities deriving from a conjugated, chelating framework. Reported here are tricoordinate copper(I), silver(I), and gold(I) complexes of a tetraphenylazadipyrromethene ligand. The new complexes are characterized by optical absorption and emission spectroscopy, multinuclear NMR, mass spectrometry, elemental analysis, and X-ray diffraction crystallography. Time-dependent density functional theory calculations indicate that the principal absorption features in azadipyrromethene complexes result from optically allowed intraligand transitions that undergo configuration interaction.
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