A supramolecular hydrogel with monitorable macro/microscopic shape memory performance.

A supramolecular shape memory hydrogel (SMH) with monitorable shape memory performance both in macro and microscopic scales was prepared through a combination of pH-responsive fluorescent carbon nanoparticles, polyvinyl alcohol and cross-linked polyacrylamide. The investigation of our SMH will provide a good understanding of the shape memory mechanism and guide in the structure design of the novel SMH.