title: Fully quantitative description of hybrid TiO2 nanoparticles by means of solid state (31)P NMR.
abstract: For the first time, an absolute quantification of hybrid materials obtained from the reaction of phenylphosphonic acid (PPA) with TiO2 nanoparticles under different reaction conditions is reported. Next to the amount of PPA involved in grafting to the TiO2 nanoparticles, also the PPA included in titaniumphenylphosphonate crystallites is described quantitatively. The quantitative analysis is based on solid state (31)P MAS NMR and is further applied to evaluate the stability of the resulting hybrid materials towards hydrolysis and organic solvent exposure.
authors: Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium. Electronic address: marco.tassi@uhasselt.be.
authors: Marco
authors: M
authors: Tassi
authors: Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium.
authors: Gunter
authors: G
authors: Reekmans
authors: Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium. Electronic address: robert.carleer@uhasselt.be.
authors: Robert
authors: R
authors: Carleer
authors: Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium.
authors: Peter
authors: P
authors: Adriaensens
keywords: (31)P solid state MAS NMR; Hybrid materials; Phosphonic acid; Structural quantification; TiO(2) surface modification