The synthesis, characterization and thermotropic properties of novel asymmetrically substituted discotic molecules, perylene diester benzimidazoles (PDBIs), are presented in this paper by Mukundan Thelakkat and co-workers in Germany.
These discotic molecules self-organize into columnar superstructures and their absorption is extended to longer wavelengths in the visible regime up to 680 nm.
These properties make n-type semiconducting PDBIs promising candidates for applications in organic electronics in areas such as light emitting diodes, field effect transistors or photovoltaic devices.
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André Wicklein, Mathis-Andreas Muth and Mukundan Thelakkat
J. Mater. Chem., 2010, Advance Article DOI:10.1039/C0JM01626H, Paper