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- W2082350886 abstract "The occurrence of dual fluorescence in ruthenium complexes containing dimethylaminobenzonitrile (DMABN) has been studied at liquid nitrogen and room temperatures. It was concluded that in the [RuII(NH3)5DMABN]2+, [RuIII(NH3)5DMABN]3+ and [RuII(bipy)2Cl(DMABN)]+ complexes (bipy ≡ bipyridyl) a typical twisted internal charge transfer (TCT) fluorescence of DMABN appears upon excitation on a π-π* ligand absorption band. The ratio of the two luminescence band intensities is modified with respect to the free ligand. The excitation of [Ru(NH3)5DMABN]n+ on a metal-to-ligand charge transfer (MLCT) band gives rise to fluorescence with maxima at 378 nm (77 K) and 393 nm (room temperature) for [Ru(NH3)5DMABN]2+ and at 435 nm (room temperature) and 450 nm (77 K) for [Ru(NH3)5DMABN]3+ complexes, which is the first example for an Ru(NH3)5L system. The four emission bands at 555, 595, 635 and 690 nm which occur in the [Ru(bipy)2-Cl(DMABN)]+ spectrum are members of a vibrational progression with Δν ≈ 1175 cm−1 and they could be assigned to the excited states with electron localization on either the bipyridyl or the dimethylaminobenzonitrile ligand, i.e. [RuIII(bipy-(bipy)Cl(DMABN)]+ or [RuIII(bipy)2Cl-(DMABN-)]+ respectively." @default.
- W2082350886 created "2016-06-24" @default.
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- W2082350886 date "1987-04-01" @default.
- W2082350886 modified "2023-10-17" @default.
- W2082350886 title "Photoluminescence of ruthenium complexes with molecules exhibiting twisted internal charge transfer states" @default.
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- W2082350886 doi "https://doi.org/10.1016/0047-2670(87)85028-1" @default.
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