A controllable etching supramolecular hydrogel based on metal ions.

Luan, Tianxiang; Ma, Mingfang; Xing, Pengyao; Wang, Yajie; Yang, Minmin; Zhang, Yimeng; An, Wei; Cheng, Qiuhong et al. · Soft Matter · 2018

basic_science · Level V

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Abstract

We report an interesting gel-etching system in which a gel can be etched with corresponding etching rates and color changes when different types of etching molecules are added to the gel. This gel system may have wide potential application in molecular recognition, pre-packaged, as well as other functional materials.