In this issue, J. S. Kahn and O. Gang review designer nanomaterials obtained through programmable assembly. M. Calderón et al. discuss the status of nanocarriers for skin applications in a further review.

In the original research section, V. V. Novikov et al. report an equilibrium between high / low spin crossover iron(II) dinuclear helicates detected by paramagnetic NMR spectroscopy. Y. H. Rhee et al. describe sequential metal catalysis towards 7-oxostaurosporine and its non-natural septanose analogue. F. Dielmann et al. synthesized photoswitchable nitrogen superbases to use light for reversible carbon dioxide capture (see picture). E. A. Curtis et al. discovered a supernova: a deoxyribozyme that catalyzes a chemiluminescent reaction.

• Angewandte Chemie 3/2022: Rapid Interchange,
  Angew. Chem. Int. Ed. 2022, 61 (3).