Cover Picture: Directed Assembly of Inorganic Polyoxometalate-based Micrometer-Scale Tubular Architectures by Using Optical Control (Angew. Chem. Int. Ed. 51/2012)



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The directed assembly and growth of polyoxometalate-based inorganic tube architectures using a computer-controlled laser-based system is described by L. Cronin, M. J. Padgett, et al. in their Communication on page 12754 ff. The picture shows the directed fusion of two tubes, colored red and green, on a microscope slide with the focus of the laser shown in red; the resulting network is made of hollow tubes that can act as microscopic flow channels.

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Nanoparticle Clusters

The production of highly symmetric gold nanoparticle clusters with coordination numbers up to seven is described by F. J. García de Abajo, A. Wittemann, A. Fery, R. A. Alvarez-Puebla, et al. in their Communication on page 12688 ff.

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In their Communication on page 12795 ff., B. T. King and co-workers show that the properties of septulene are strikingly similar to those of kekulene, despite its sevenfold symmetry and resulting non-alternant structure.

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Intermetallic Phases

In their Communication on page 12699 ff., G. J. Miller and co-workers report the discovery of a sodium-containing icosahedral quasicrystal during a systematic exploration of the Na–Au–Ga system to uncover novel polar intermetallics with complex Au–Ga frameworks.

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