%0 Journal Article
%T Evaporation-Induced Self-Structuring of Organised Silica Nanohybrid Films Through Cooperative Physical and Chemical Interactions
%+ University of the Sunshine Coast (USC)
%+ Optique et Matériaux (NEEL - OPTIMA)
%+ Laboratoire Charles Coulomb (L2C)
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM)
%A Cojocariu, Ana M.
%A Cattoën, Xavier
%A Le Parc, Rozenn
%A Maurin, David
%A Blanc, Christophe
%A Dieudonne-George, Philippe
%A Bantignies, Jean-Louis
%A Wong Chi Man, Michel
%A Bartlett, John R.
%< avec comité de lecture
%Z L2C:15-255
%@ 1463-9076
%J Physical Chemistry Chemical Physics
%I Royal Society of Chemistry
%V 18
%P 7946
%8 2016-03-09
%D 2016
%R 10.1039/C5CP02742J
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X In this work, we develop the concept of evaporation-induced self-structuring as a novel approach forproducing organised films by exploiting cooperative physical and chemical interactions under far-fromequilibriumconditions (spin-coating), using sol–gel precursors with multiple functional groups. Thin filmsof self-structured silsesquioxane nanohybrids have been deposited by spin coating through the sol–gelhydrolysis and condensation of a bridged organosilane bearing self-assembling urea groups. The resultingnanostructure, investigated by FTIR, AFM and SEM, is shown to be highly dependent on the catalyst used(nucleophilic or acidic), and can be further modulated by varying the spinning rate. FTIR studies revealed thepresence of highly organised structures under acidic catalysis due to strong hydrogen bonding between ureagroups and hydrophobic interactions between long alkylene chains. The preferential orientation of the ureacross-links parallel to the substrate is shown using polarized FTIR experiments.
%G English
%L hal-01279551
%U https://hal.science/hal-01279551
%~ UGA
%~ CNRS
%~ ENSC-MONTPELLIER
%~ INPG
%~ NEEL
%~ ICG
%~ L2C
%~ INC-CNRS
%~ NEEL-OPTIMA
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ UGA-COMUE
%~ UM-2015-2021