Cover image for Vol. 11 Issue 20

4_11/2008Cover Picture: Small 11/2008

The cover picture shows scanning electron microscopy images of organic nanowires and platelets. High-aspect- ratio nanowires were formed via synergistic hydrogen bonding and dipole–dipole interactions of a hydrogen-bonding azobenzene flavin system. In contrast, micrometer-size platelets were formed using a highly analogous non-hydrogen-bonding molecule. Co-precipitation of the two analogous molecules provides efficient control over both nanowire length and diameter. This strategy offers an opportunity to engineer supramolecularassemblies with well-defined size, shape, and morphology for electronic and optical applications. For more information, please read the Full Paper “Controlled Self-Assembly of Organic Nanowires and Platelets using Dipolar and Hydrogen Bonding Interactions” by G. Cooke, V. M. Rotello, et al. beginning on page 2074.

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