Ruthenium® polypyridine

Dixon IM, Lebon E, Sutra P, Igau A (2009) Luminescent ruthenium-polypyridine complexes phosphorus ligands anything but a simple story. Chem Soc Rev 38 1621-1634... 

Co(terpy)2 +/Co(terpy)2 + value is much smaller than that for either the ground- or excited-state ruthenium polypyridine couples because substantial rearrangement of the metal... 

This part of the photosynthetic chain can be mimicked by ruthenium-tyrosinate and manganese-tyrosinate complexes [80-82], In the excited state the ruthenium-polypyridine complex abstracts one electron from the tyrosinate moiety, yielding... 

Pan LP, Durham B, Wolinska J, Millett F. Preparation and characterization of singly labeled ruthenium polypyridine cytochrome c derivatives. Biochemistry 1988 27 7180-4. 

Among the several species shown in Fig. 12, two special classes of compounds were systematically studied (31, 38, 39), consisting of tetrasubstituted pyridylpor-phyrins coordinated with four ruthenium-polypyridines (here denoted tetraruthe-nated pyridylporphyrin, TRPyP) or triangular ruthenium clusters (here denoted tetracluster pyridylporphyrin, TCPyP) (Fig. 13). 

Figure 9 Plot of nk as a function of free energy for electron-transfer reactions of Ru-65-c)d 65 labeled with different ruthenium polypyridine complexes. The solid tine shows the theoretical dependence of equation (1) calculated with a reorganizational energy of 0.94 eV and a distance r of 13 A. The open boxes are for the reactions involving the excited state, = ki, and the filed boxes are for the thermal back reactions, ki-i = k2, all determined at 22 °C. (Reprinted with permission from Ref. 55. 1993 American Chemical Society)...

Matsuo, T., Nakamura. H., Nakao, T., Kawazu, M. Optical second harmonic generation from ultrathin polymer films impregnated with ruthenium polypyridine complexes. Chem. Lett. 2363-2366 (1992)... 

Nakano. T.. Yamada. Y., Matsuo, T., Yamada, S. In-situ second-harmonic generation and luminescence measurements for structural characterization of ruthenium-polypyridine complex monolayers with two and four aliphatic tails at the air/water interface. J. Phys. Chem. B 102, 8569-8573 (1998)... 

Ruthenium polypyridine complexes as models for the photosynthetic reaction center 01ACR905. 

Osmium and ruthenium polypyridine complexes initially received much attention from Dwyer and coworkers because the M(II), M(III), and M(IV) oxidation states are substitution inert.Interest in them has been renewed because of their photochemical reactions and the role they play in the study of reactions of coordinated ligands " and of mixed valence ions and in the preparation of electroactive polymer films. The aqua complexes " also have important potential applications in the selective oxidation of organic molecules and water. We found that trifluoromethanesulfonato (triflato) complexes are convenient synthetic intermediates in the preparation of aqua and oxo species, " and we describe the syntheses of the cii-bis(2,2 -bipyridine) complexes here. 

Photoinduced Electron Transfer Reactions in Metalloprotein Complexes Labeled with Ruthenium Polypyridine Francis Millett and Bill Durham... 

The most favorable compound for non-natural amino acid requires the following 1) stability to air, moisture, acid, base and heat, 2) complex inert to ligand exchange reaction, 3) electrochemical stability and 4) synthetic facility. Consequently, we selected ruthenium-polypyridine compounds and ferrocene derivatives shown in Fig. 3.33(b). Palladium compounds were prepared for spectroscopic comparisons and investigation. 

Assemblies involving molecular catalysts are instead much more rare. In 2010, Sun and coworkers reported a photoelectrochemical device, able to efficiently split water into O2 and H2, by immobilizing a molecular ruthenium catalyst in a Nafion membrane and depositing the material onto a nanostructured Ti02 anode, sensitized with a ruthenium polypyridine dye. Visible light-driven water splitting was successfully achieved upon both illumination and application of a small bias of — 0.325 V vs. Ag/AgCl to the device. 

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