Injectable and mechanically robust 4-arm PPO-PEO/graphene oxide composite hydrogels for biomedical applications.

Graphene-based nanomaterials with different oxidation degrees were incorporated into Tetronic-tyramine (Tet-TA) hydrogels via enzymatic cross-linking. The molecular oxidation of graphene in combination with amphiphilic Tet-TA significantly improved the water dispersibility of graphene oxide (GO), resulting in a significant reinforcement of Tet-TA/GO composite hydrogels that can be used as an injectable biomaterial platform.