Wednesday, September 29, 2010, 11:00 am — Bldg. 735 - Conf Rm B
Organic semiconductors have generated significant interest due to their potential applications in organic electronics. Molecular architecture plays an important role in influencing the charge transport properties of these molecules. We have investigated the charge transport properties in dendrons, dendron-rod-coil molecular triads, dendronized polymers and conjugated oligomers. The charge transport properties were studied using bottom contact field effect transistors, in which the material was deposited by spin coating. In case of dendrons, their generation and density of charge transporting functionalities were found to play a significant role in influencing the charge transport properties. Short conjugated oligomers, based on donor-acceptor-donor design, provide model systems for conjugated polymers. Effect of varying the donor functionality on optoelectronic and charge transport properties was studied. These molecules exhibit a reduced bandgap, good solution processability and charge mobility making them interesting systems for application in organic photovoltaics.
Hosted by: Barney Grubbs
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