Soluble RGO/Plu-S-S assembly with crosslinked Pluronic shell structure was formulated through noncovalent interaction between Plu-SH and RGO plates and simultaneous crosslinking of Plu-SH on RGO plates. While other RGO/aliphatic polymer assemblies show limited solubility only in aqueous media, RGO/Plu-S-S assembly showed enhanced environmental stability and organic solubility with the help of crosslinked shell structure.