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Frontiers of Chemical Science and Engineering >> 2020, Volume 14, Issue 6 doi: 10.1007/s11705-019-1865-5

Supramolecular self-assembly of two-component systems comprising aromatic amides/Schiff base and tartaric acid

Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

Received:2020-05-29 Accepted: 2020-07-30 Available online:2020-07-30

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The gelating properties and thermotropic behaviors of stoichiometric mixtures of aromatic amides , and the aromatic Schiff base with tartaric acid (TA) were investigated. Among the three gelators, -TA exhibited superior gelating ability. Mixture -TA exhibits a smectic B phase and an unidentified smectic mesophase during both heating and cooling runs. The results of Fourier transform infrared spectroscopy and X-ray diffraction revealed the existence of hydrogen bonding and - interactions in -TA systems, which are likely to be the dominant driving forces for the supramolecular self-assembly. Additionally, it was established that all of the studied gel self-assemblies and mesophases possess a lamellar structure. The anion response ability of the tetrahydrofuran gel of -TA was evaluated and it was found that it was responsive to the stimuli of F , Cl , Br , I , AcO .

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