Energy conversion based on molecular excited states: Redox splitting in soluble polymers. Final report

Technical Report · Sun Dec 31 04:00:00 EST 1995

DOI:https://doi.org/10.2172/253369· OSTI ID:253369

Meyer, T J

A general method was developed for preparing complexes of Ru(II) with three different bidentate ligands; it is being extended to monodentate ligands for more synthetic versatility. This method was used to prepare a series of complexes with pre-designed absorption properties, with the goal of ``black absorbers`` for use as antenna chromophores in a light-to-chemical energy conversion array. The energy gap law for nonradiative decay was studied for preparing near-IR luminophores with long excited state lifetimes. The problem of destructive dd excited states in Ru(II) polypyridyl complexes was focused on, with success in preparing an extremely photo-inert complex with monodentate pyridine ligands. Time-resolved resonance Raman and infrared spectroscopy were used to study subtle excited state properties of complexes of Ru(II), Os(II), and Re(I). Success was achieved in controlled immobilization of d{sup 6} chromophores and quenchers on styrenic polymers. Having perfected our synthetic technique, we have begun to optimize the ground and excited state properties such as chromophore density, dipole orientation, and lifetime.

• Research Organization: North Carolina Univ., Chapel Hill, NC (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-86ER13633
• OSTI ID: 253369
• Report Number(s): DOE/ER/13633--T1; ON: DE96012365
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
BIPYRIDINES
ENERGY CONVERSION
LIGANDS
OSMIUM COMPLEXES
PHOTOCHEMICAL ENERGY STORAGE
PROGRESS REPORT
PYRIDINES
RUTHENIUM COMPLEXES