Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 32, Pages 11072-11077Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903829
Keywords
dipeptide; dynamic light scattering; phase transition; supramolecular assembly; water transport
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Funding
- Institute of Chemistry, CAS [Y6290512B1] Funding Source: Medline
- National Nature Science Foundation of China [21433010, 21872150, 21573248] Funding Source: Medline
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2016032] Funding Source: Medline
- ERC Ad G SmartPhon [694977] Funding Source: Medline
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A gel-to-crystal phase transition of a dipeptide supramolecular assembly mediates active water transportation in oils. The addition of water into ultrafast-assembling dipeptide organogels can induce a lamellar-to-hexagonal structural transformation of dipeptide molecular arrangement. Consequently, a phase transition from gel to crystal occurs and in turn water is transported in the dipeptide crystal via well-defined channels. On a macroscopic scale, water transport in the bulk system exhibits an anisotropic characteristic, which can be tuned by the presence of ions in the Hofmeister series. These favorable features enable the automatic separation of dispersed nanoparticles from dissolved electrolytes in aqueous solution. These findings demonstrate the potential of this assembled system for active filtration without external pressure.
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