PMSE 146 |
| The ease with which small-molecule organic semiconductors can be functionalized allows a single chromophore framework to be tuned for use in a myriad of electronic applications. Substituents can also be used to influence properties such as solubility and stability, but such functionalization must take careful account of how substitution of the chromophore will change intermolecular interactions, as well as the desirability of such interactions in specific applications. Using 5-ringed acenes and heteroacenes as the chromophore, this report will describe the use of a straightforward functionalization approach to create organic materials tuned for use in organic transistors and solar cells. Particular attention will be focused on the effect of functionalization on the solid-state order of the molecules, and the impact of this order on the performance of the resulting devices. For transistors, extensive two-dimensional &pi-overlap was critical to obtaining high performance, whereas for photovoltaics, such interactions yielded poor energy conversion.
|
|
Conjugated Oligomers and Polymers
8:30 AM-12:00 PM, Tuesday, March 27, 2007 McCormick Place South -- Room S504D, Level 5, Oral
Division of Polymeric Materials: Science & Engineering |
