This invention provides a novel peptide molecular material, wherein the molecular structure of the material is a combination of halogen-substituted or unsubstituted aryl and a peptide molecular. This material can self-assemble to form a nanofiber and form a hydrogel. The hydrogel has various properties, including low cytotoxicity, the promotion of cell growth and migration as well as being stable under a physiological condition and a human body temperature.
