Excited state processes in transition metal complexes: Redox splitting in soluble polymers. Progress report, November 15, 1991--November 14, 1992

Technical Report · Sun Mar 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10138892· OSTI ID:10138892

Meyer, T J

In our research there were two major themes. The first was the continued development of excited states as sensitizers. In one sequence of experiments the synthetic aspects of this area were developed in further detail both by extending the chemistry of the polypyridyl-accepting ligands associated with the excited state and by developing a new procedure for the preparation of unsymmetrical tris-chelate complexes. The second important aspect of this work was the continued investigation of the molecular and electronic structure characteristics of this class of excited states and how those factors determine such properties as photostability and excited state decay. This effort was extended to complexes of Re(I) and an examination of their excited state characteristics, the role of hydride ligand in determining the properties of excited states, the calculation of relative nonradiative decay rate constants for a series of complexes of Ru(II), the participation of higher lying excited states in decay in complexes of Ru(II) and Os(II), and the application of the transient infrared technique to the elucidation of a photochemical intermediate following laser flash excitation. The second area of study involved excited states in soluble polymers to investigate photoinduced electron and energy transfer in multi-component assemblies. This work was based on chemically derivatized polystyrene polymers which contain combinations of chromophores and electron or energy transfer quenchers.

• Research Organization: North Carolina Univ., Chapel Hill, NC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-86ER13633
• OSTI ID: 10138892
• Report Number(s): DOE/ER/13633--11; ON: DE92011808
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
400500
BIPYRIDINES
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
ELECTRONIC STRUCTURE
ENERGY TRANSFER
EXCITED STATES
MOLECULAR STRUCTURE
OSMIUM COMPLEXES
PHOTOCHEMISTRY
POLYMERS
PROGRESS REPORT
RHENIUM COMPLEXES
RUTHENIUM COMPLEXES