Organic Semiconductor Structure Providing Efficient Intermolecular Interactions Among the Pi-electrons
Organic semiconductor building blocks are co-crystalized with the functional groups that reinforce stacking through H-bond interactions.
UIRF Case #:06035
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Sokolov AN, Frisić T, MacGillivray LR. Enforced face-to-face stacking of organic semiconductor building blocks within hydrogen-bonded molecular cocrystals. J. Am. Chem. Soc., 2006; 128 (9): 2806�2807.
Level of Development
General: Experimental Proof of Concept
Researchers at University of Iowa have developed a solid phase semiconductive organic polymer structure that improves face-to-face stacking of monomers, hence providing the backbone structure for much more efficient intermolecular electron transfers. Aromatic molecules, such as thiophene based compounds, have rich electron centers (face) comprised of the network of pi-electrons and are commonly used as the "building blocks" of conductive/semiconductive organic polymers. The inventors of this technology have created the modified thiophene and anthracene compounds by co-crystallizing them with the anchoring functional groups that reinforce the molecular alignment (stacking) of building blocks through the hydrogen-bonding interactions rather than through already-reported dipole-dipole or van der Waals interactions. This structure provides a much more rigid construct for the overlapping orbital of pi-electrons which improves the efficiency of intermolecular electron mobility among the stacked individual building blocks.
Inventor Web Site Link(s)