Fig. 4: Defect-free MOFs.
From: Benefits and complexity of defects in metal-organic frameworks
a Defect-free UiO membranes are synthesised from fumaric acid, BDC or BDC-OH linkers to form a family of supported membranes with precisely regulated pore sizes. b The H2/CO2 selectivity UiO membranes is dependent on the pore size determined by linker choice and strongly degraded by increased defectivity. c HRTEM image of UiO-fumarate membrane provides evidence for a near ideal lattice. Figure elements adapted with permission from ref. 58. Copyright 2023 Springer Nature. d The structure of HKUST-1 is composed of CuII paddlewheel nodes bridged by BTC linkers. A known defect involves reduction of one CuII centre and loss of a single carboxylate linker. Defective HKUST-1 SURMOF samples exhibit a blue colour while high quality thin films are colourless. Figure elements adapted with permission from ref. 15. Copyright 2017 American Chemical Society.
