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The Ultrafast Assembly of a Dipeptide Supramolecular Organogel and its Phase Transition from Gel to Crystal
Author(s) -
Yuan Tingting,
Xu Youqian,
Fei Jinbo,
Xue Huimin,
Li Xianbao,
Wang Chenlei,
Fytas George,
Li Junbai
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201903829
Subject(s) - dipeptide , supramolecular chemistry , phase transition , hofmeister series , aqueous solution , chemistry , lamellar structure , liquid crystal , phase (matter) , chemical physics , micelle , self assembly , crystallography , chemical engineering , crystal structure , crystal (programming language) , colloid , materials science , organic chemistry , peptide , thermodynamics , biochemistry , physics , optoelectronics , engineering , programming language , computer science
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.