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2015 MRS Spring Meeting


MM2.07 - Crystal Engineering of Bulk p/n Heterojunction by Complementary Hydrogen Bonding


Apr 7, 2015 4:00pm ‐ Apr 7, 2015 4:15pm

Description

Molecular packing and morphology of organic semiconductors in the solid state are some of the most crucial yet the most unpredictable parameters controlling the performance of organic electronics. I will describe a new strategy for controlling the co-assembly of p- and n-type organic semiconductors through complementary hydrogen bonding. The dipyrrolopyridine heterocycle is introduced as a p-type (donor) semiconductor component capable of complementary H-bonding with naphthalenediimides (acceptor).[1,2] I will show that the H bonding self-assembly process (i) modulates the charge transfer interactions between the donor and acceptor, (ii) allows for precise control over the heterojunction structure and (ii) leads to a combination of the charge-transport properties of the individual components. These studies provide a foundation for advanced solid state engineering in organic electronics, capitalizing on the complementary H-bonding interactions. [1] H. T. Black, D. F. Perepichka, Angew. Chem. Int. Ed. 2014, 53, 2138-2141 [2] H.T. Black, H. Lin, F. B�langer-Gari�py, D.F. Perepichka, Faraday Discuss. 2014, DOI: 10.1039/C4FD00133H

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