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Masaki Nakahata, Dr. Yoshinori Takashima and Prof. Dr. Akira Harada Redox-Responsive Macroscopic Gel Assembly Based on Discrete Dual Interactions Angewandte Chemie International Edition 53

Version of Record online: 5 MAR 2014 | DOI: 10.1002/anie.201310295

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Changing partner on cue: The interaction between poly(acrylamide)-based hydrogels modified with β-cyclodextrin (βCD gel), ferrocene (Fc gel), and sodium p-styrenesulfonate (SSNa gel) was investigated. The βCD gel and the Fc gel selectively assembled with one another through a host–guest interaction (see picture). On the other hand, when Fc was oxidized to Fc+, the Fc+ gel selectively adhered to the SSNa gel through a cation–anion interaction.

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