title: Novel nanostructured pHEMA-TiO2 hybrid materials with efficient light-induced charge separation.
abstract: We report on a new approach to the fabrication of an electronic material: organic-inorganic pHEMA-oxo-TiO(2) hybrid with efficient light-induced separation of charges. Particular attention is paid to the material nanoscale morphology. The size-selected 5.0 nm titanium oxo-alkoxy nanoparticles are prepared in a sol-gel reactor with rapid (turbulent) fluid micromixing and the ligand exchange results in a stable nanoparticulate precursor in HEMA solution, in which polymerization can be induced thermally or by photons. The obtained hybrid materials demonstrate the highest quantum yield of photoinduced charge separation of 50% and can store photoinduced electrons at a number density above 10% Ti atoms.
authors.affiliation: Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions, CNRS, Institut Galilée, Université Paris-Nord, 93430, Villetaneuse, France.
authors.forename: Pavlo
authors.initials: P
authors.lastname: Gorbovyi
authors.forename: Andrii
authors.initials: A
authors.lastname: Uklein
authors.forename: Siteng
authors.initials: S
authors.lastname: Tieng
authors.forename: Ovidiu
authors.initials: O
authors.lastname: Brinza
authors.forename: Mamadou
authors.initials: M
authors.lastname: Traore
authors.forename: Khay
authors.initials: K
authors.lastname: Chhor
authors.forename: Luc
authors.initials: L
authors.lastname: Museur
authors.forename: Andrei
authors.initials: A
authors.lastname: Kanaev
mesh_terms: D004583:Electrons; D008027:Light; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D017785:Photons; D011102:Polyhydroxyethyl Methacrylate / Q000737:chemistry*; D055672:Static Electricity; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: C009495:titanium dioxide; D011102:Polyhydroxyethyl Methacrylate; D014025:Titanium