Protein-like dynamical transition of hydrated polymer chains
Soft Condensed Matter
2021-03-11 v2
Abstract
Combining elastic incoherent neutron scattering experiments at different resolutions with molecular dynamics simulations, we report the observation of a protein-like dynamical transition in linear chains of Poly(N-isopropylacrylamide). We identify the onset of the transition at a temperature of about 225~K. Thanks to a novel global fit procedure, we find quantitative agreement between measured and calculated polymer mean-squared displacements at all temperatures and time resolutions. Our results confirm the generality of the dynamical transition in macromolecular systems in aqueous environments, independently of the internal polymer topology.
Cite
@article{arxiv.2007.11860,
title = {Protein-like dynamical transition of hydrated polymer chains},
author = {L. Tavagnacco and M. Zanatta and E. Buratti and B. Rosi and B. Frick and F. Natali and J. Ollivier and E. Chiessi and M. Bertoldo and E. Zaccarelli and A. Orecchini},
journal= {arXiv preprint arXiv:2007.11860},
year = {2021}
}