ORGN 545 |
| Ruthenium(II) tris-bipyridine complexes are of great interest due to their photochemical and photoelectrical properties as photosensitizers in dye sensitized solar cells. Currently, the modulation of excited state lifetime of these complexes is of great interest to us. Highly conjugated 4,4'-bisethynyl-2,2'-bipyridines have been prepared from 4,4'-diiodo-2,2'-bipyridine and terminal alkynes via Pd/Cu mediated coupling reactions. The bisethynylbipyridines were further complexed with bis(2,2'-bipyridine)Ru(II)dichloride to afford bis(2,2'-bipyridine)(4,4'-ethynyl-2,2'-bipryridine)ruthenium bis(hexafluorophosphate) complexes. In this presentation, the relationship between excited-state lifetime and effect of π-conjugation on bipyridine ligands will be discussed.
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Heterocycles, Aromatics, Metal-Mediated Reactions and Syntheses, Materials, Devices, and Switches
8:00 PM-10:00 PM, Wednesday, 29 March 2006 Georgia World Congress Center -- Ex. Hall B4, Poster
Sci-Mix
Division of Organic Chemistry |
