Angewandte Chemie International Edition
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture: Transcription and Amplification of Molecular Chirality to Oppositely Biased Supramolecular π Helices (Angew. Chem. Int. Ed. 7/2006)
Inversion of helicity and the formation of unusual fused supercoiled left and right helices of gel-forming linear π-conjugated molecules by a “sergeants and soldiers” approach, in which the achiral molecules (soldiers) mistake orders from the chiral molecules (sergeants), is described by A. Ajayaghosh et al. on page 1141 ff. The cover picture shows Janus, the double-faced Greek God, holding a left-handed DNA helix and a right-handed conch which epitomize the marvels of natural creations.
Also of Interest
Natural Products Synthesis
Natural polyynes have a broad spectrum of biological activities on account of their structural diversity. R. R. Tykwinski and A. L. K. Shi Shun report on the isolation and synthesis of polyynes in their Review on page 1034 ff.
In their Communication on page 1058 ff., G. Jeschke and co-workers show how pulsed DEER methods are used to measure an intermolecular distance of 6.15 nm between noncovalently interacting proteins.
Circles or Columns
T. Bein and co-workers describe in their Communication on page 1134 ff. how the structure of mesoporous silica can be controlled by carefully tuning the reaction conditions during its synthesis.