Two-dimensional Self-assembly of Amphiphilic Peptide at the Solid/Water Interface toward a Facile Method for Metal Nanoparticle Alignment

Abstract

Abstract An amphiphilic peptide that adopts a random-coil or β-sheet conformation depending on the pH of the dissolved aqueous solution forms a monolayered fiber array when a mica substrate is immersed in the random-coil solution. The random-coil peptide adsorbed on the substrate spontaneously transforms into a fibrous structure at the mica/water interface. Such specific self-assembly behavior at the solid/water interface is profitably utilized to construct a two-dimensional nanoarchitecture of gold nanoparticles.