title: Functionalisation of CdSe semiconductor nanoparticles with polystyrene brushes by radical polimerization.
abstract: CdSe nanoparticles with polystyrene (PS) brushes are obtained by "grafting through" technique starting from solely aqueously synthesized nanoparticles. Mercaptoethanol (ME) capped nanoparticles are used to achieve double bond functional groups on the surface by condensation reaction with methacryloxypropyltrimethoxysilane (MPS). PS polymerization starts from these double bonds. Spectroscopic, diffraction and thermal techniques are used to characterize the nanoparticles. Infrared spectroscopy shows the formation of robust bonding between CdSe nanoparticles and the organic ligand, as well as the presence of the functional double bond on the surface of nanoparticles. Thermal analysis reveals changes in thermal properties of PS, as thermal stability of PS in the functionalised nanoparticles is improved. UV-vis and fluorescence measurements show that PS-CdSe nanoparticles exhibit good optical properties and transmission electron microscope (TEM) micrographs shows good level of dispersion of CdSe nanoparticles in a PS matrix.
authors: Group 'Materials + Technologie's, Escuela Politécnica, Department of Chemical and Environmental Engineering, Universidad Pais Vasco/Euskal Herriko Unibertsitatea. Pza. Europa 1, 20018 Donostia-San Sebastián, Spain.
authors: Haritz
authors: H
authors: Etxeberria
authors: Iñaki
authors: I
authors: Zalakain
authors: Agnieszka
authors: A
authors: Tercjak
authors: Arantxa
authors: A
authors: Eceiza
authors: Galder
authors: G
authors: Kortaberria
authors: Iñaki
authors: I
authors: Mondragon
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D003102:Colloids / Q000138:chemical synthesis; D003460:Crystallization / Q000379:methods*; D005609:Free Radicals; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D012666:Semiconductors; D013499:Surface Properties
chemical_list: D019187:Cadmium Compounds; D003102:Colloids; D005609:Free Radicals; D046911:Macromolecular Substances; D011137:Polystyrenes; D018036:Selenium Compounds; C058667:cadmium selenide