Discotic (disc-like) molecules typically comprising a rigid aromatic core and flexible peripheral chains have been attracting growing interest because of their fundamental importance as model systems for the study of charge and energy transport and due to the possibilities of their application in organic electronic devices. This critical review covers various aspects of recent research on discotic liquid crystals, in particular, molecular design concepts, supramolecular structure, processing into ordered thin films and fabrication of electronic devices. The chemical structure of the conjugated core of discotic molecules governs, to a large extent, their intramolecular electronic properties. Variation of the peripheral flexible chains and of the aromatic core is decisive for the tuning of self-assembly in solution and in bulk. Supramolecular organization of discotic molecules can be effectively controlled by the choice of the processing methods. In particular, approaches to obtain suitable macroscopic orientations of columnar superstructures on surfaces, that is, planar uniaxial or homeotropic alignment, are discussed together with appropriate processing techniques. Finally, an overview of charge transport in discotic materials and their application in optoelectronic devices is given.

Trçgers base is a well-known chiral molecule with a few unusual structural features. The chemistry of Trçgers base analogues has been greatly developed over the last 20 years, and numerous interesting applications in supramolecular chemistry and in molecular recognition have emerged. This Review gives a short overview of the chemistry of Trçgers base and its analogues, with particular focus on recent achievements in synthesis, enantiomer separations, and applications.

Organic chemistry Z 0200 Spacer-Controlled Multiple Functionalization of Fullerenes -[204 refs.]. -(THILGEN, C.; SERGEYEV, S.; DIEDERICH, F.; Top. Curr. Chem. 248 (2005) 1-61; Lab. Org. Chem., ETH-Hoenggerberg, CH-8093 Zuerich, Switz.; Eng.) -Lindner 26-238

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