On the origin of the great rigidity of self-assembled diphenylalanine nanotubes
Résumé
The elastic properties of the nanotubes of self-assembled aromatic
dipeptide diphenylalanine are investigated by means of Raman
spectroscopy and a mass-in-mass 1D model. Analysis of nanotubes’
lattice vibrations reveals the essential contribution of the water in the
nanochannel core of the tubes to the Young’s modulus and high water
mobility along the channel. Direct measurements of the Young’s
modulus performed by nanoindentation confirm the obtained results