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Illustration of the mechanical activation of Rh mechanophore incorporated into the micellar hydrogels. (a) Micellar hydrogels with serious chain entanglement before stretching; (b) mechanochromic hydrogels (purple/red color and pink/rose red fluorescence) with chain orientation; (c) microspheres with serious chain entanglement containing small amount of water; (d) deformed microspheres with Rh mechanophore activation facilitated by chain orientation and water.
