Sol-Gel Chemistry: From Molecule to Functional Materials

Dynamic light scattering confirmed the silane condensation step and particle aggregation processes were reported by the turbidity scanning. Since the hydrolysis and polycondensation were carried out under acidic conditions, it was observed that the organosilane nPM remained on the surface, whereas, for the organosilane 3F, the condensation produced aggregates that settled to the bottom of the tube. [...]bioglass-based zinc-doped hydroxyapatite (HAp) obtained using the sol-gel method were described by Predoi et al. [...]the authors showed the good stability (six months) of the thin hydrophobic layer at a high humidity ambient condition of 80% RH. Smaller nanoparticles (around 10 nm,) can also be obtained by sol-gel in reverse micro emulsion method (water in oil) in which hydrolysis and the polycondensation take place in the hydrophilic micelles that play the role of nanoreactors. [...]silica nanoparticles with several molar contents of europium (0.2%, 0.5%, and 1%) were prepared in one step.