Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 32, Pages 9391-9395Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201704579
Keywords
crystal defects; microporous materials; oriented molecular crystals; porous organic cages; separation membranes
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Funding
- EPSRC [EP/N004884/1, EP/M01486X/1]
- European Union's Seventh Framework Programme (FP) [321156 (ERC-AG-PE5-ROBOT)]
- N8 consortium
- ARCHER UK National Supercomputing Service via an EPSRC Programme Grant [EP/N004884]
- Department of Chemical Engineering at Imperial College London
- Engineering and Physical Sciences Research Council [EP/N004884/1, EP/M01486X/1, EP/J019364/1] Funding Source: researchfish
- EPSRC [EP/M01486X/1, EP/N004884/1, EP/J019364/1] Funding Source: UKRI
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The formation of two-dimensional (2D) oriented porous organic cage crystals (consisting of imine-based tetrahedral molecules) on various substrates (such as silicon wafers and glass) by solution-processing is reported. Insight into the crystallinity, preferred orientation, and cage crystal growth was obtained by experimental and computational techniques. For the first time, structural defects in porous molecular materials were observed directly and the defect concentration could be correlated with crystal growth rate. These oriented crystals suggest potential for future applications, such as solution-processable molecular crystalline 2D membranes for molecular separations.
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