Angewandte Chemie International Edition
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture: 1D Arrangement of Au Nanoparticles by the Helical Structure of Schizophyllan: A Unique Encounter of a Natural Product with Inorganic Compounds (Angew. Chem. Int. Ed. 13/2005)
A linear array of nanoparticles can be generated by the use of an appropriate template. The cover picture shows a TEM image of such a 1D array of gold nanoparticles, aligned by the use of the β-1,3-glucan polysaccharide schizophyllan, which adopts a triple-helical structure in aqueous solution. In their Communication on page 2030 ff., S. Shinkai and co-workers describe how the hydrophobic inner cavity of the helix hosts the hydrophobic nanoparticles and aligns the guests along its length.
Also of Interest
Combinations of Brønsted and Lewis acids can provide enantioselective catalysts with unique reactivity and versatility. The latest developments in “designer acids” for asymmetric synthesis are discussed in the Review by H. Yamamoto and K. Futatsugi on page 1924 ff.
Bridged Nucleic Acids
In their Communication on page 1944 ff, T. Imanishi and co-workers describe the consequences of a conformational restriction brought about by introducing a methylene bridge into an oligonucleotide P3'N5' phosphoramidate.
An amide helix with terminal quinoline units is described by I. Huc and co-workers in their Communication on page 1954 ff. The resulting helix resembles an apple peel and encapsulates a water molecule.