Photophysical properties of monomeric and oligomeric ruthenium (II) porphyrins
1994; Elsevier BV; Volume: 231; Issue: 1 Linguagem: Inglês
10.1016/0009-2614(94)01222-9
ISSN1873-4448
AutoresMarjo Ikonen, David Guez, Valérie Marvaud, Dimitra Markovitsi,
Tópico(s)Photochemistry and Electron Transfer Studies
ResumoThe present Letter deals with three ruthenium(II) porphyrins: RuTBP(CO) (EtOH), RuTBP(pyz)2 and [RuTBP(pyz)]n where TBP = tetrakis(3,5-di-tert-butyl-4-hydroxyphenyl) porphyrin, EtOH = ethanol and pyz = pyrazine. Their photophysical properties are studied by steady-state and time-resolved absorption and emission spectroscopy. Each one of the examined compounds shows weak luminescence originating from a different electronic state: porphyrin triplet3 (π,π∗) for RuTBP (CO) (EtOH), equatorial 3LCT for RuTBP(pyz)2 and axial 1MLCT for [RuTBP(pyz)]n.
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