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题名: A hydro-metallogel of an amphiphilic L-histidine with ferric ions: shear-triggered self-healing and shrinkage
作者: Chen, Jie1; Wang, Tianyu1; Liu, Minghua1, 2
刊名: INORGANIC CHEMISTRY FRONTIERS
发表日期: 2016
卷: 3, 期:12, 页:1559-1565
收录类别: SCI
英文摘要: Metallogels of an amphiphilic L-histidine derivative (LHC18) with various transition metal ions were investigated. It was found that while the amphiphile formed precipitates in aqueous solution when mixed with Cu2+, Zn2+, Ni2+, it formed a hydrogel with Fe3+. Interestingly, upon cooling the transparent solution of LHC18 with Fe3+ to room temperature gently without any interruption, the gel was formed. Upon further resting at room temperature, the gel underwent shrinkage and 90% of ferric water was expelled from the gel. On the other hand, if the as-formed gel was shaken or shear forces were applied, the gel would collapse into sol. The collapsed sol will recover to become the gel within one minute upon resting and the process can be repeated many times. In addition, once the gel experiences the thixotropic process, it will not shrink anymore. So far, various metallogels have been reported, and we show the first example of a metallogel that shows dual shrinkage and self-healing properties.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35687
Appears in Collections:胶体、界面与化学热力学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China
2.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin, Peoples R China
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