%0 Conference Paper
%F Oral 
%T H bond spring behaviour in hybrid silica under pressure
%+ Laboratoire Charles Coulomb (L2C)
%+ Department of Physics and CICECO, University of Aveiro,
%+ Institut de Chimie de Nice (ICN)
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM)
%+ Optique et Matériaux (NEEL - OPTIMA)
%+ Department of Physics and CICECO, University of Aveiro
%+ Department of Physics and CICECO
%+ University of the Sunshine Coast (USC)
%A Le Parc, Rozenn
%A Freitas, Vânia
%A Creff, G.
%A Wong Chi Man, M.
%A Cattoën, Xavier
%A Hermet, Patrick
%A Ferreira, Rute A. S.
%A Carlos, Luis D.
%A Bartlett, John R.
%A Bantignies, Jean-Louis
%< sans comité de lecture
%Z L2C:17-248
%B Horizons in Hydrogen Bond Research
%C Jyväskylä, Finland
%8 2017-09-10
%D 2017
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers
%X Bridged silsesquioxane nanomaterials exhibit original mechanical properties thanks to the association of non-covalent and covalent interactions. Thanks to in situ high pressure spectroscopic studies, achieved in diamond anvil cells, the mechanical behavior of these materials was followed as a function of pressure. Vibrational studies coupled to ab-initio simulations show that mechanical constrains are absorbed by the modulation of H bond interactions. We thus show that the rigidity yielded by the inorganic polymerization is counterbalanced by the presence of the intermolecular H bond network. In a large range of pressures, these hybrid materials have a reversible behavior, and thus behave as molecular springs. In a second time, we demonstrate that the pressure behavior of these molecular spring is sensitive to the conformation of H bonds (cyclic versus linear) and to the constraints imposed the covalent inorganic network.
%G English
%L hal-01909459
%U https://hal.science/hal-01909459
%~ UNICE
%~ UGA
%~ CNRS
%~ ENSC-MONTPELLIER
%~ INPG
%~ NEEL
%~ ICG
%~ L2C
%~ INC-CNRS
%~ NEEL-OPTIMA
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ UNIV-COTEDAZUR
%~ TEST-HALCNRS
%~ UGA-COMUE
%~ INSTITUT-CHIMIE-NICE
%~ UM-2015-2021