Tris(2,2'-bipyridine)dichlororuthenium(II) hexahydrate is a catalyst used in light-induced redox reactions. It is an important catalyst in studies towards photochemical water splitting. This product can be used as a catalyst in pharmaceutical research. It is widely applied in fields of photoelectrical chemical components, photovoltaic cells, smart biosensors.
Newly synthesized semi-quinone derivatives of the ruthenium polypyridyl, covalently linked to a porphyrin core, show very high e values (59 000-83 500 M-1cm-1) for the absorption band in the near infrared (NIR) region of the spectrum. Further, complexes 1-4 show an interesting reversible electrochromic behavior as a function of the redox state of the coordinated dioxolene functionality, and a switching phenomenon between bleaching and the restoration of the NIR peak could be achieved electrochemically. Thus, complexes 1-4 could be ideal candidate materials for NIR-active electrochromic devices. Ultrafast studies on 1 and its mononuclear components, 5-(3,4-dihydroxyphenyl)-10,15,20-triphenyl-21H,23H-porphyrin (H 2L1) and Ru(bpy)2(bsq)+, reveal that there is no electron or energy transfer from the porphyrin to the Ru(bpy) 2sq+ (bpy is 2,2′-bipyridine and sq is the deprotonated species of a substituted semi-quinone fragment) fragment or vice versa in 1. The observed decrease in the luminescence quantum yield for 1 compared to that of H2L1 can be ascribed to the increased nonradiative pathway due to higher vibronic coupling because of the direct linkage of the metal center to the porphyrin moiety.
Oximated ruthenium tris-bipyridyl complex: synthesis …
Synthesis, Characterization, and Investigation of Optical and Electrochemical PropertiesAU - Calvert,Jeffrey M.AU - Meyer,Thomas J.PY - 1981Y1 - 1981N2 - A series of metallopolymers have been prepared by the reaction between poly(4-vinylpyridine) (Mn ≈ 3900) and [Ru-(trpy)(bpy)(OH2)]2+ (trpy is 2,2',2”-terpyridine and bpy is 2,2,-bipyridine).
Ruthenium(II) Charge-Transfer Sensitizers Containing …
This project involves the synthesis, shown below, of a ligand containing a bipyridine and a pyrene connected by a six carbon chain. This ligand will then be chelated to ruthenium, iridium and rhodium so UV/Vis, fluorescence quenching, and voltammetry experiments can be performed on each. These experiments will illustrate how the ligand affects its bound metal’s redox potential and its photochemical behavior. Once the metal-ligand complex has been characterized, hydrogen generation experiments can be performed. This ligand, when bound to ruthenium, may also have the ability to cleave DNA when exposed to light, a property which could be further explored. The pyrene also provides a pi system so the ligand can be used to attach metals to carbon nanotubes, via pi stacking interactions, a phenomenon being explored in collaboration with researchers at the University of Pennsylvania.
Ruthenium bipyridine | Sigma-Aldrich
Furst, L. and Stephenson, C. R. J. 2012. Ruthenium(II), Tris(2,2′-bipyridine-κN1,κN1′)-, (OC-6-11)-. e-EROS Encyclopedia of Reagents for Organic Synthesis. .
Search results for Ruthenium bipyridine at Sigma-Aldrich
The electrochemical character of the complexes was investigated by cyclic voltammetry revealing two reversible reduction waves in the negative range of potentials, most likely due to a reduction of the bipyridine moiety.