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. 2021 Jan 27;13(3):396. doi: 10.3390/polym13030396

Figure 12.

Figure 12

Multi-responsive hydrogel [185]. A pH-, redox-, glucose-, and temperature-responsive hydrogel is obtained through the crosslinking of catechol-functionalized PNIPAM with a disulfide diboronic acid. The resulting hydrogel additionally presents self-healing and adhesion abilities.