Oligomer and mixed-metal compounds: Potential multielectron transfer catalysts

Technical Report · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6104618

Rillema, D P

Research continued on potential multi-electron transfer catalysts. A new ligand with an ethyl group bridging two 1,10-phenanthroline ligands was isolated. This ligand can be utilized for generating monometallic or bimetallic complexes. The copper(I) complex was prepared and illustrates the utility of the ligand. The copper(I) complex luminesced in fluid solution at room temperature. Several new luminescing complexes of platinum(II) based on the biphenyl ligand were isolated. Their photophysical properties were separated into two classes, those emitting from {sup 3 }LC state and those emitting from a {sup 3}MLCT state in the same compound. Temperature dependent emission lifetime studies of new ruthenium(II) complexes suggest that current explanations regarding the photophysics of these complexes may need to be reexamined. Barclay-Butler plots of the log of the preexponential factor vs {Delta}E, the Arrhenius activation energy, was linear for a wide range of ruthenium(II) complexes. Finally, progress continues to be made in understanding energy transfer processes in mixed metal ruthenium(II)/rhenium(I) ruthenium(II)/cobalt(III) complexes. Solvent plays a critical role in the luminescence from both the rhenium(I) and ruthenium(II) components in the bimetallic complex and this role was examined as a function of the heavy atom effect and other solvent properties. 34 refs., 2 figs.

• Research Organization: North Carolina Univ., Charlotte, NC (USA). Dept. of Chemistry
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG05-84ER13263
• OSTI ID: 6104618
• Report Number(s): DOE/ER/13263-7; ON: DE91009522
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
AROMATICS
ARRHENIUS EQUATION
AZAARENES
CATALYSTS
CHEMICAL REACTIONS
COMPLEXES
COPPER COMPLEXES
DOCUMENT TYPES
ELECTRON TRANSFER
EQUATIONS
HETEROCYCLIC COMPOUNDS
LIGANDS
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHENANTHROLINE-ORTHO
PHENANTHROLINES
PHOTOCHEMICAL REACTIONS
PLATINUM COMPLEXES
PROGRESS REPORT
REAGENTS
RHENIUM COMPLEXES
RUTHENIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES