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On the origin of the great rigidity of self-assembled diphenylalanine nanotubes

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 tube...

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Published in:Physical chemistry chemical physics : PCCP 2016-11, Vol.18 (43), p.29681-29685
Main Authors: Zelenovskiy, Pavel, Kornev, Igor, Vasilev, Semen, Kholkin, Andrei
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Language:English
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description 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. The great rigidity of self-assembled diphenylalanine nanotubes is due to the hydrogen bonds existing between monomers and water in the nanochannel.
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subjects Channels
Condensed Matter
Materials Science
Modulus of elasticity
Nanoindentation
Nanostructure
Nanotubes
Origins
Physical chemistry
Physics
Tubes
title On the origin of the great rigidity of self-assembled diphenylalanine nanotubes
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