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Cover Picture Spectroscopic Tracking of Molecular Transport Junctions Generated by Using Click Chemistry (Angew. Chem. Int. Ed. 282009)

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D 3461
www.angewandte.org
2009–48/28
Synthetic Methods
J.-Q. Yu et al.
Boron Radicals
W. Kaim et al.
Metal–Metal Interactions
C. A. Murillo
Total Synthesis of Sporolide B
D. Menche and P. Li
ACIEFS 48 (28) 5055–5218 (2009) · ISSN 1433–7851 · Vol. 48 · No. 28
Cover Picture
Xiaodong Chen, Adam B. Braunschweig, Michael J. Wiester,
Sina Yeganeh, Mark A. Ratner,* and Chad A. Mirkin*
The in situ generation of molecules that bridge nanogaps generated by on-wire
lithography is achieved by using click chemistry. C. A. Mirkin, M. A. Ratner, and coworkers show in their Communication on page 5178 ff. that these molecular junctions
give high yields, and they describe how this strategy can be generalized to incorporate
diverse molecular architectures within the nanogaps. Tracking of the molecular
assembly process within the nanogaps is allowed by their strong electromagnetic field.
Boron Radicals
In their Minireview on page 5082 ff., W. Kaim et al. discuss two- and threedimensional paramagnetic compounds with at least partially boron-centered
electron spin. DFT calculations can be used to explain the extremely variable spin
distribution.
Synthetic Methods
J.-Q. Yu and co-workers describe in their Review on page 5094 ff. the catalytic cycles
for the palladium-catalyzed C H activation/C C cross-coupling reactions and
demonstrate the versatility and utility of the C(aryl) C bond-forming reactions
starting from C(aryl) H bonds.
Nanofiber Networks
DNA-wrapped carbon nanotubes can be ionically “spot welded”. This self-assembly
technique results in a highly porous, spongelike material, as described by G. Spinks,
S. J. Kim, and co-workers in their Communication on page 5116 ff.
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using, molecular, 282009, tracking, chemistry, int, spectroscopy, generate, cover, angel, chem, transport, junction, click, picture
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