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Synthesis and properties of novel organogelators functionalized with 5-iodo-1,2,3-triazole and azobenzene groups

Ziyan Li,Yaodong Huang,Dongli Fan,Huimin Li,Shuxue Liu,Luyuan Wang

《化学科学与工程前沿（英文）》 2016年第10卷第4期页码 552-561 doi: 10.1007/s11705-016-1589-8

摘要： Two series of 5-iodo-1,2,3-triazole derivatives containing azobenzene group(s) were synthesized and their gelling properties were tested. Those containing two azobenzene groups ( series) have better gelation performance than those containing one azobenzene group ( series). The microstructure of organogels and the driving force of gelation were investigated by scanning electron microscopy and H NMR, respectively. It was found that π-π stacking, van der Waals interaction, and dipole-dipole interaction were the main forces of gelation. All the tested organogels are photoresponsive and those from series are smarter than that from series. Henry - diagrams of compounds , , and were constructed on the basis of their gelation performance and the Hansen solubility parameters of related solvents. The constructed Henry - diagrams can be used to estimate the behavior of three compounds in any untested solvent.

关键词： iodo triazole azobenzene photoresponsive organogel gelator-solvent effect

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

Xin Wang, Wei Cui, Bin Li, Xiaojie Zhang, Yongxin Zhang, Yaodong Huang

《化学科学与工程前沿（英文）》 2020年第14卷第6期页码 1112-1121 doi: 10.1007/s11705-019-1865-5

摘要： 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 .

关键词： supramolecular self-assembly organogel liquid crystal tartaric acid hydrogen bond