Meine Merkliste  

18.447 Aktuelle Fachpublikationen in Angewandte Chemie International Edition


Sie können Ihre Recherche weiter verfeinern. Wählen Sie aus dem linken Bereich passende Suchfilter aus, um Ihre Ergebnisse gezielt einzugrenzen.

Asymmetric Three-Component Inverse Electron-Demand Aza-Diels-Alder Reaction: Efficient Synthesis of Ring-Fused Tetrahydroquinolines

14.04.2010 | Mingsheng Xie, Xiaohong Chen, Yin Zhu, Bo Gao, Lili Lin, Xiaohua Liu, Xiaoming Feng, Angewandte Chemie International Edition, 2010

Diels or no Diels: The titled reaction of aldehydes, anilines, and cyclopentadiene, promoted by 0.5-5 mol % of an N,N[prime]-dioxide-scandium complex, afforded ring-fused tetrahydroquinolines that contained three contiguous stereocenters. The one-pot reaction delivers the products with good ...


Double-Helical Silicon Microtubes

12.04.2010 | Haruhiko Morito, Hisanori Yamane, Angewandte Chemie International Edition, 2010

A new twist on semiconductors: The evaporation of Na from ionic intermetallic NaSi at 800 °C leads to the formation of double-helical silicon microtubes. The tubes have nanogranular or smooth surfaces and a twinned structure with voids in the tube wall. A mechanism is proposed for the ...


Insight into the Mechanism of the Ru2+-Ru3+ Electron Self-Exchange Reaction from Quantitative Rate Calculations

09.04.2010 | Harald Oberhofer, Jochen Blumberger, Angewandte Chemie International Edition, 2010

The distance dependences of all electron-transfer parameters, including electronic coupling, are computed for the Ru2+-Ru3+ electron self-exchange reaction in aqueous solution. It is found that the probability for electron exchange is a maximum a Ru2+-Ru3+ distance of 5.6 Å (see free-energy ...


Dilution-Induced Self-Assembly of Porphyrin Aggregates: A Consequence of Coupled Equilibria

08.04.2010 | Floris Helmich, Cameron C. Lee, Marko M. L. Nieuwenhuizen, Jeroen C. Gielen, Peter C. M. Christianen, Antje Larsen, ..., Angewandte Chemie International Edition, 2010

Piggy-back porphyrins: The presence of a Lewis base affects the cooperative self-assembly of zinc porphyrins remarkably. Driven by the susceptibility of the monomer towards the axial ligand, monomer scavenging caused depolymerization of porphyrin aggregates, and dilution caused aggregation by a ...


Steric Isotope Effects in a Supramolecular Host-Guest System

08.04.2010 | Jeffrey S. Mugridge, Robert G. Bergman, Kenneth N. Raymond, Angewandte Chemie International Edition, 2010

Kinetic isotope effects are observed in the guest exchange process in a supramolecular host-guest system. As reported by J. S. Mugridge, R. G. Bergman, and K. N. Raymond in their Communication (DOI: ), deuteration of the guest molecule results in up to an 11% increase in the rate of guest ...


Carbon-Nanotube-Array Double Helices

07.04.2010 | Qiang Zhang, Meng-Qiang Zhao, Dai-Ming Tang, Feng Li, Jia-Qi Huang, Bilu Liu, Wan-Cheng Zhu, Ying-Hao Zhang, Fei Wei, Angewandte Chemie International Edition, 2010

Let's twist: Levo- or dextrorotatory carbon-nanotube (CNT) arrays are twisted into a double helix (see picture) on a layered double hydroxide flake through a self-organization process during growth by chemical vapor deposition. The as-grown CNT arrays in the double helix are able to carry a high ...


Double-Layered Photoanodes from Variable-Size Anatase TiO2 Nanospindles: A Candidate for High-Efficiency Dye-Sensitized Solar Cells

07.04.2010 | Yongcai Qiu, Wei Chen, Shihe Yang, Angewandte Chemie International Edition, 2010

Little and large: A double-layered photoanode constructed from small and large single-crystal anatase TiO2 nanospindles achieves 8.3 % energy-conversion efficiency in a dye-sensitized solar cell (see schematic). One layer of the double-layer structure serves mainly to harbor numerous dye ...


Seite 1845 von 1845
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.