| 초록 |
We have demonstrated that T-shaped aromatic amphiphiles self-assemble into stimulus-responsive fibrils consisting of aromatic cores surrounded by hydrophilic oligo(ethylene oxide) dendritic segments. Upon heating, the fibrils showed to have more hydrophobic surfaces, resulting in enhanced hydrophobic interactions between the ethylene oxide-coated nanofibrils. Consequently, this dynamic fibrillar association leads to a reversible phase transition from a fluid state to gels with increasing temperature. This stimulus-responsive feature of the fibrils give a remarkable contrast from the conventional fibrillar gels that dissolve upon heating. The results described herein represent a significant example that nanofibrils with stimulus-responsive surfaces can provide a useful strategy to create intelligent nanomaterials with desired functions. |
