Cover Picture Methods for the Chemical Synthesis of Fullerenes (Angew. Chem. Int. Ed. 382004)код для вставкиСкачать
Cover Picture Lawrence T. Scott* A high price in energy must be paid to impose curvature on the p system of a planar polycyclic aromatic hydrocarbon. This step was essential for the first chemical synthesis of C60 in isolable quantities, which stands as dramatic testimony to the power of the new synthetic methods devised for fullerene synthesis. In his Review on page 4994 ff., L. T. Scott describes the numerous syntheses of geodesic polyarenes reported, which serve to test the scope and limitations of the new methods. Nanomaterials Their preorganized structure makes ionic liquids are an ideal solvent for materials synthesis. M. Antonietti et al. explore the concept and perspectives of this strategy in their Minireview on page 4988 ff. Luminescent Materials Visible-light excitation of a europium complex leads to characteristic red emission as reported by Y. Wang, J.-P. Zhang, W.-T. Wong et al. in their Communication on page 5010 ff. Such excition at longer wavelengths is required for many applications. Natural Product Synthesis The total synthesis of thiostrepton, a highly active antibiotic from Streptomyces, was completed by K. C. Nicolaou et al. The synthetic route can be followed in their Communications on pages 5087 ff and 5092 ff.