Multi-stimuli responsive metal-organic gel of benzimidazol-based ligands with lead nitrate and their use in removal of dyes from waste-water

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 0.36 wt%,which exhibits a super gelation capability of D11.The coordination...

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Bibliographic Details
Published in:Chinese chemical letters 2013-08, Vol.24 (8), p.703-706
Main Authors: Yao, Hong, You, Xing-Mei, Lin, Qin, Li, Jun-Jian, Guo, Ying, Wei, Tai-Bao, Zhang, You-Ming
Format: Article
Language:English
Subjects:
Benzimidazole derivative
Dye absorption
Metal-organic gel
Multi-stimuli responsive
刺激响应
咪唑基配体
废水
有机凝胶
染料分子
硝酸铅
苯并咪唑衍生物
金属配体
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Summary: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 0.36 wt%,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.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2013.05.022