Luminescence quenching of ruthenium(II)-tris(phenanthroline) by cobalt(III)-tris(phenanthroline) bound to the surface of starburst dendrimers

Article Abstract:

Research was conducted to examine the luminescence quenching of ruthenium(II)-tris(phenanthroline) by cobalt(III)-tris(phenanthroline) bound to the surface of starburst dendrimers. The analysis of luminescence quenching is based on an extension of the random-deposition model. The objective is to obtain the interaction distance characteristic of the photoelectron transfer in the quenching process. Results indicate that the electron donor and acceptor metal complexes do not bind randomly on the SBD's surfaces but that they tend to be located next to each other.

Research, Cobalt, Luminescence

---

The role of the central atom in structure and reactivity of polyoxometalates with adjacent d-electron metal sites. Computational and experimental studies of gama-[(X(super n+) O4) Ru(super III)2(OH)2(M(sub FM)10O32](super 8-n) (super -) for M(sub FM) = Mo and W, and X = Al(super III), Si(super IV), P(super V), and S(super VI)

Article Abstract:

An investigation is presented on the role of the central atom X in the structure and reactivity of di-Ru-substituted gama-Keggin poluoxometalates (POMs), gama-[(X(super n+)O4)Ru(super III)2(OH)2(M(sub FM)10O32])(super 8-n) (super -), where M(super FM) = Mo and W, and X = Al(super III), Si(super IV), P(super V) and S(super VI). For both M(super FM) = Mo and W the nature of X is crucial in determining the lower lying electronic states of the polyoxoanions which are in turn significantly impacts their reactivity.

Molybdenum Compounds, Atomic properties

---

Ru(bpy)3(super 2+)TiO2-codoped zeolites: Synthesis, characterization, and the role of TiO2 in electron transfer photocatalysis

Article Abstract:

Zeolite Y-based systems that combine the sensitizer properties of Ru(bpy)3(super 2+) with the electron conducting properties of TiO2 nanocrystals is synthesized in an effort to improve the light harvesting and especially the electron-transfer efficiency of zeolite-photocatalysts. It is expected that the TiO2 nanocrystals within the zeolite framework will help in the transport of electrons through their conduction band.

Zeolites, Spectra, Titanium dioxide, Chemical properties

Similar abstracts:

• Abstracts: Sonoluminescence quenching in aqueous solutions containing weak organic acids and bases and its relevance to sonochemistry
• Abstracts: Conformation of methylene chains in an intercalated surfactant bilayer. Modeling alkali atoms deposition on TiO2 (110) surface
• Abstracts: Effect of orientational motion of mobile chromophores on the dynamics of Forster energy transfer in polymers. FRET by FET and dynamics of polymer folding
• Abstracts: Networks of quantum nanodots: the role of disorder in modifying electronic and optical properties. Intermolecular and intramolecular logic gates
• Abstracts: Application of the electronegativity equalization method to the interpretation of TSDC results: case of a mordenite exchanged by Na+ and Li+ cations

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.