Fig. 4: Revealing the local structures in the MIL-101 crystals.
From: Imaging the node-linker coordination in the bulk and local structures of metal-organic frameworks
a The iDPC-STEM image showing the terminations of a corner in the octahedral MIL-101 crystal. The 34 Å cages (marked by the blue circles) were exposed at this corner. Scale bar, 5 nm. b, c The iDPC-STEM images showing the surface steps and step-edge sites of the MIL-101 crystals with two types of surface terminations, respectively. Scale bars, 5 nm. d The iDPC-STEM image showing the interface structures at a twin-plane boundary. Scale bar, 10 nm. e The structural model of the twin-plane interface imaged in d. The interface was formed by horizontally flipping and moving the marked part (below) to match the part above again. f, g The iDPC-STEM images showing the line (f) and plane (g) defects on the twin-plane interface. These defects lasted through the whole atom arrays parallel to the electron beam. Scale bars, 5 nm.
