Fig. 14.

Schematic illustrations of gold-thiolate interaction-triggered self-healing nanocomposite hydrogels. (A) Schematic structure of gold NPs and a list of comonomers used for the polymerization of hydrogels. (B) Schematic formation of GNP hydrogels with modified gold NPs as large crosslinkers in situ free-radical polymerizations. (C) Schematic mechanism for the dynamic and reversible RS–Au bonding under NIR laser irradiation (808 ​nm). Reproduced with permission [82]. Copyright 2017, Elsevier B.V. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)