Multi-stimuli responsive metal-organic gel of benzimidazol-based ligands with lead nitrate and their use in removal of dyes from waste-water
Multi-stimuli responsive metal-organic gel of benzimidazol-based ligands with lead nitrate and their use in removal of dyes from waste-water
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DOI：
10.1016/j.cclet.2013.05.022
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发表时间：
2013-08
影响因子：
9.1
通讯作者：
Hong Yao;Xing-Mei You;Qi Lin;Jun-Jian Li;Ying Guo;T. Wei;You‐Ming Zhang
中科院分区：
文献类型：
--
作者：
Hong Yao;Xing-Mei You;Qi Lin;Jun-Jian Li;Ying Guo;T. Wei;You‐Ming Zhang
研究了在硝酸铅存在下由双羧基苯并咪唑衍生物（D11）形成的新型智能金属有机凝胶（MOG）。MOG形成的临界凝胶浓度仅为0.36wt%，表现出D11的超强凝胶能力。金属与配体D11的配位作用在超分子MOG的构建中起着至关重要的作用。SEM观察表明，MOG由相互缠绕的原纤维组成。有趣的是，MOG表现出pH诱导的，热诱导的，和化学诱导的可逆凝胶-溶胶转变。同时，该超分子MOG对水溶液中的甲基橙子染料分子表现出良好的吸附能力。
A novel smart metal-organic gel (MOG) formed from biscarboxyl-functionalized benzimidazole derivative (D11) in the presence of lead nitrate has been investigated. The critical gel concentration for the formation of MOG was just 0.36wt%, which exhibits a super gelation capability of D11. The coordination of the metal to the ligand D11 was found to play a vital role in the construction of the supramolecular MOG. Microstructures determined by SEM observation demonstrated that the MOG was formed by intertwined fibrils. Interestingly, the MOG exhibits pH-induced, thermo-induced, and chemical-induced reversible gel–sol transition. Meanwhile, this supramolecular MOG shows desirable absorption ability of methyl orange dye molecules in aqueous solution.