In this issue, M. Prato et al. review the covalent functionalization of graphene on substrates. How can chemical structures and bandgaps be fine-tuned for electronic applications? In a Minireview, T. Wang and J. Gong discuss single-crystal semiconductors for water splitting. The Highlight deals with N⁶-methyladenine in eukaryotic genomes (D. Summerer). In his Editorial, S. Kitagawa reflects on porous materials and the age of gas.

In the Communications section, X. Zou et al. demonstrate how coupling Mo₂C with nitrogen-rich nanocarbon leads to efficient electrocatalytic sites for hydrogen evolution (see picture). F. Jäkle et al. report on a versatile and facile access to unconstrained conjugated organoborane macrocycles. K. J. M. Bishop et al. explain how amphiphilic nanoparticles control the growth and stability of lipid bilayers with open edges. S. Gianni et al. establish that frustration sculpts the early stages of protein folding.

• Angewandte Chemie 37/2015: Fine Control,
  Angew. Chem. Int. Ed. 2015, 54 (37).