Self-Assembled
Chiral Nanofibers from Ultrathin Low-Dimensional
Nanomaterials
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Abstract
Despite
many developed methods, it still remains a challenge to
provide a simple and general strategy for the controlled preparation
of chiral nanostructures. Here we report a facile and universal approach
for the high-yield and scalable preparation of chiral nanofibers based
on the self-assembly of various ultrathin one-dimensional and two-dimensional
nanomaterials in vigorously stirred polymeric solutions. The obtained
chiral nanofibers can be further transformed to same-handed chiral
nanorings. As a proof-of-concept application, chiral MoS<sub>2</sub> and multiwalled carbon nanotube nanofibers were used as promising
active layers for flexible nonvolatile data storage devices. Impressively,
the chiral MoS<sub>2</sub> nanofiber-based memory device presents
a typical nonvolatile flash memory effect with excellent reproducibility
and good stability. Our method offers a general route for the preparation
of various functional chiral nanostructures that might have wide applications