| Chirality is ubiquitous in nature.Peptides can self-assemble into various chiral nanostructures including twisted ribbons,helix,twisted fiber and so on.We can control this process precisely to obtain different chiral nanostructures by changing p H,concentration,temperature and so on.Ferrocene,an organometallics,is popular in biomaterial research area due to its stability.Ferrocene can modify peptides to manipulate the self-assembling behavior of peptides.According to the previous researches,we synthesized ferrocene modified phenylalanie and regulated its self-assembly process.However,most previous researches on peptide chiral self-assembly mostly proceed in solution phase.In this work,we focused on the chiral self-assembly of Fc-F on solid-air and solid-aqueous interfaces,and explored the potential applications of the self-assembled materials.We reported the formation of highly ordered bioorganometallic nanohelical arrays based on the hierarchical chiral self-assembly of a simple ferrocenyl phenylalanine(Fc-F).The formation of nanohelical arrays was a kinetically controlled process,which could be controlled by changing the growth time and the vapor temperature.The chiral nanoarrays could generate circularly polarized luminescence by the incorporation of fluorescent dyes.Moreover,due to the redox activity of the Fc moiety,the nanohelical arrays showed enhanced electric capacity compared with previously reported peptide nanomaterials.The results deepen our understanding on the chiral self-assembly of highly ordered nanomaterials,which have promising applications in fields of optics,sensing and energy storage.The chiral self-assembly of Fc-F in solution was induced by GO and the morphology of Fc-F self-assemblies could be controlled by changing p H and concentration of GO.Composite gels formed in different conditions showed various properties in chirality and mechanical strength.Due to the redox activity of ferrocene,Fc-F/GO could be used as dopamine biosensor. |
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