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Keywords:

  • coordination polymers;
  • crystal growth;
  • interfaces;
  • metal–organic frameworks;
  • microporous materials

Abstract

Thumbnail image of graphical abstract

A porous copper coordination framework grew epitaxially as a single crystal on the surface of a single crystal of a porous zinc coordination framework, as described by S. Kitagawa and co-workers in their Communication on page 1766 ff. The picture shows the structural relationship between the copper and zinc frameworks, which has been unveiled by synchrotron surface X-ray diffraction measurements; in-plane rotational epitaxial growth compensates for the different lattice constants of the two crystals.