Angewandte Chemie International Edition
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Inside Cover: Helical Arrangement of Interstrand Stacked Pyrenes in a DNA Framework (Angew. Chem. Int. Ed. 24/2007)
A self-organizing system composed of two oligopyrene strands that leads to the formation of an interstrand helical stack embedded in a double strand of DNA is reported by R. Häner and co-workers in their Communication on page 4464 ff. Fluorescence and CD spectroscopy show that helical organization takes place in a hybrid containing 14 consecutive achiral pyrene building blocks but not within the respective single strands nor in hybrids containing 6 or less pyrene residues.