ORGN 276 |
| Molecular wires have a variety of foreseeable uses, from molecular circuits in computers to solar energy conversion. One of the properties that must be understood about for designing chemicals for solar energy conversion is what are the charge separation properties, and how does one maximize this decay pathway over others. Using a combination of fluorescence, electrochemistry, and radiation chemistry, we were able to elucidate several modifications that are important to charge separation. The redox potentials for a several materials, including diblock conjugated oligimers, have been measured, either by electrochemical methods or through the use of equilibration with a suitable known standard after electron irradiation. For the diblock conjugated oligimers, an inverse correlation between the solvent polarity and the fluorescence quantum yield was also observed. The information collected allows one to make an estimate on the various energy levels involved and how they change with respect to solvent variations. |
|
Materials, Molecular Recognition and Self-Assembly
8:00 AM-12:00 PM, Monday, 11 September 2006 Moscone Center -- Room 132, Oral
Division of Organic Chemistry |