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Conjugated Oligothiophenes with Increased Molecular Dimensionality for Organic Electronics

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Conjugated oligothiophenes have been widely investigated for their used in organic electronics[1]. Among them, structurely planar molecules, molecules attracted much more attentions for their better charge transport abilities. Recently, conjugated molecules with increased molecular dimensionality, such as X-shaped[2], star-shaped[3] as well as dendritic structures[4] have been reported for use in organic electronics. In this contribution, we will present the latest results of our research group in developing novel three dimensional conjugated oligothiophenes for applications in bulk heterojunction solar cells. By using our recent developed synthetic strategy, 3D all-thiophene dendrimers with different repeating units were successfully synthesized. Functionalizations of these dendritic oligothiophenes at core-, periphery- and/or arm-positions with various optically or redox-active groups were also achieved in order to increase the functionalities of the thiophene dendrimers.

© 2013 Optical Society of America

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