Cover Picture: From Short-Range to Long-Range Intermolecular NOEs in Ionic Liquids: Frequency Does Matter (Angew. Chem. Int. Ed. 35/2013)

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Abstract

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The nuclear Overhauser effect … … (NOE) is used for studying the local structures in ionic liquids. In their Communication on page 9242 ff., H. Weingärtner et al. report a new model theory that makes it possible to analyze intermolecular 1H-19F NOE data of 1-butyl-3-methylimidazolium tetrafluoroborate. The arrow in the picture indicates that a H-F NOE at a H–F distance of about 20 Å can be predicted, although it is common knowledge that this effect is only observed for a distance of 5 Å.

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The nuclear Overhauser effect … … (NOE) is used for studying the local structures in ionic liquids. In their Communication on page 9242 ff., H. Weingärtner et al. report a new model theory that makes it possible to analyze intermolecular 1H-19F NOE data of 1-butyl-3-methylimidazolium tetrafluoroborate. The arrow in the picture indicates that a H-F NOE at a H–F distance of about 20 Å can be predicted, although it is common knowledge that this effect is only observed for a distance of 5 Å.

Nanocrystals

In their Communication on page 9120 ff., K. M. Ryan et al. report a photoluminescence study of alloyed Cu2ZnSn(S1−xSex)4 wurtzite nanocrystals (10 nm in size) with a varying composition (x= 0–1).

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Polymer Brushes

In their Communication on page 9125 ff., W. T. S. Huck, W. Liu, F. Zhou et al. have developed a method to grow polymer brushes in complex gradient patterns. A sandwiched metal substrate achieves this with only a few microliters of growth solution.

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Computational Chemistry

In their Communication on page 9275 ff., M. Solà, J. M. Luis et al. show that it is the maximum aromaticity criterion that determines the most suitable hosting cages for the encapsulation of metal clusters in endohedral metallofullerenes.

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