Adsorption–desorption kinetics of silica coated on textile fabrics by the sol–gel process

Luminescent hybrid coatings prepared by a sol–gel process for a textile-based pH sensor

“…The coating with the TEOS/PTES mixture was highly homogeneous. 28 It can, therefore, be deduced that the dispersion of the fluorophores in the TEOS/PTES mixture did not affect the polymerization of the alkoxysilanes to achieve high-quality hybrid coatings. Indeed, for all the fluorophores, the coatings were highly homogeneous and well covered the surface of the fibers.…”

“…23 The sol-gel method is a technique that can be used to trap molecules, such as fluorophore, in a 2D or 3D silica-based system, and is a technique well known for its low-temperature conditions and its ability to achieve different shapes. [24][25][26][27][28] This process requires hydro-alcoholic solutions of an organometallic precursor, whereby most of the time a hybrid film is coated onto the textile surface to confer it new functionalities, depending on the entrapped molecules, such as flame retardancy, 29 water repellency, 30 or antimicrobial. 31,32 Besides, when a chromic dye is incorporated inside the sol-gel coating, the surface of the textile materials can be used as a pH probe, which leads to flexible sensors that offer the possibility for continuously controlling the pH of large volume systems.…”