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RESEARCH PRODUCT
Luminescent and Magnetoresponsive Multifunctional Chalcogenide/Polymer Hybrid Nanoparticles
Markus B. BannwarthRafael Muñoz-espíGerhard JakobViktor FischerKatharina Landfestersubject
chemistry.chemical_classificationMaterials scienceNanoparticlePolymerSodium sulfideCadmium sulfideSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsMiniemulsionchemistry.chemical_compoundGeneral EnergyMonomerchemistryPolymerizationPolymer chemistryPolystyrenePhysical and Theoretical Chemistrydescription
Cadmium sulfide/magnetite/polymer multifunctional hybrid nanoparticles are prepared by crystallizing CdS in a controlled manner on the surface of phosphonate-functionalized polystyrene particles with a magnetic core. The supporting polymer magnetoresponsive nanoparticles are produced by a modified miniemulsion polymerization process: a first miniemulsion containing the core monomer (styrene) and a phosphonate-functionalized surface-active monomer is mixed with a second miniemulsion containing magnetite nanoparticles capped with oleic acid and the same surface-active monomer. The chalcogenide formation occurs in situ at the surface of the polymer particles by adding a precipitating agent (sodium sulfide) at a controlled rate. The phosphonate groups on the surface of the polymer particles have the ability to bind the cadmium ions and act as nucleating centers from which the controlled crystallization of CdS takes place. The resulting hybrid particles show a “raspberry-like” structure, with CdS nanocrystals ...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-03-12 | The Journal of Physical Chemistry C |