In situ synthesis of polystyrene/nano-CdSe core/shell microspheres in aqueous solution at room temperature

Polystyrene/nano-CdSe (PS/CdSe) core/shell microspheres were synthesized via in situ soap-free emulsion polymerization using various functional monomers such as 2-(dimethylamino)ethyl methacrylate, 1-vinylimidazole, 2-vinylpridine, and 4-vinylpridine. They were co-polymerized with styrene monomer an...

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Bibliographic Details
Published in:Colloid and polymer science 2013-05, Vol.291 (5), p.1155-1162
Main Authors: Yoon, Hyojung, Rhym, Young-Mok, Shim, Sang Eun
Format: Article
Language:English
Subjects:
Applied sciences
Cadmium selenides
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
Monomers
Nanocomposites
Nanomaterials
Nanostructure
Nanotechnology and Microengineering
Original Contribution
Particulate composites
Physical Chemistry
Polymer industry, paints, wood
Polymer Sciences
Polystyrene resins
Scanning electron microscopy
Soft and Granular Matter
Technology of polymers
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Summary:Polystyrene/nano-CdSe (PS/CdSe) core/shell microspheres were synthesized via in situ soap-free emulsion polymerization using various functional monomers such as 2-(dimethylamino)ethyl methacrylate, 1-vinylimidazole, 2-vinylpridine, and 4-vinylpridine. They were co-polymerized with styrene monomer and provided the location for coordinating with Cd 2+ ions on the PS particle surfaces. Then, we used an alkaline selenium solution as a selenium source. Reaction of the alkaline selenium solution with the previous emulsion produced nanocrystalline CdSe onto the surface of PS particles at room temperature under atmospheric pressure. The different kinds of functional monomers and the amount of both Cd 2+ ion and functional monomer were playing important roles to obtain stable and uniform morphologies of CdSe particles. Morphological observations were carried out by both scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Through the SEM and TEM microphotographs, we could confirm the formation of PS/nano-CdSe composite particles. Ultraviolet–visible absorption measurement indicated the quantum dot effect in the resulted PS/nano-CdSe core/shell microspheres.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-012-2843-3