In this issue, V. Dötsch et al. review in-cell NMR and EPR spectroscopy of biomacromolecules. How did these techniques enable direct investigation of the conformation, dynamics, binding events, and posttranslational modifications of such molecules in living cells? M. Hellwig and T. Henle contribute a short history of the Maillard reaction. What is the chemistry of the aroma, taste, and appearance of thermally processed food? In a Minireview, T. Ube and T. Ikeda summarize the design, fabrication, and function of photomobile polymer materials based on crosslinked liquid-crystalline structures. The Highlight deals with graphene oxide for separation membranes (Z. P. Smith and B. D. Freeman). In their Editorial, H. M. L. Davies and D. Morton explain how collaborative methods redefine the chemical logic of C–H functionalization.

In the Communications section, Z.-Y. Xu et al. present a mild and versatile nitrate-promoted C–H bond fluorination (see picture). H. Tanaka et al. tested their anode catalysts for hydrazine fuel cells in a vehicle prototype, and S. I. Zones et al. succeeded in the preparation of high-silica zeolites with extra-large-pore channels.

• Angewandte Chemie 39/2014: Chemical Logic,
  Angew. Chem. Int. Ed. 2014, 39.