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Mimicking the diverse glyco-conjugate structures in nature is always the dream of scientists. Right now, hierarchical self-assembled structures of natural conjugates of peptides and sugars could not easily be achieved via linear glycopolypeptide with monosaccharides as attachments. In this work, by using a series of well-designed alternating amphiphilic glycopolypeptide brushes (AAGBs) with pendants of glycodendrons and short peptides, various self-assembled morphologies were achieved, including nanowires, nanoribbon, and compound micelles mainly depending on the number ratio of the sugar units to the amino acids species (S/F). Among these morphologies, nanowire attracted our great attention. TEM studies demonstrated that it is formed via a hierarchical self-assembly, i.e., a series of successive processes, including micellization, micelles alignment forming nanofilament, branching of the nanofilaments by micelles, and finally nanowire formation. As far as we know, such hierarchical self-assembly process with high complexity has not been observed in literature for glycopolypeptides even polypeptides, which will deepen our understanding on self-assembly mechanism of natural glyco-conjugates and expand the library of biomimetic materials.

journal of the american chemical society

Building Nanowires from Micelles: Hierarchical Self-Assembly of Alternating Amphiphilic Glycopolypeptide Brushes with Pendants of High-Mannose Glycodendron and Oligophenylalanine