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Encapsulation of cobalt nanoparticles in cross-linked-polymer cages |
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| Authors: | Shadie Hatamie J. Ding |
| Affiliation: | a Department of Electronic-Science, Fergusson College, Pune 411 004, India b Department of Physics, University of Pune, Pune 411 007, India c Department of Materials Science and Engineering, National University of Singapore, 7, Engineering Drive 1, Singapore 117574, Singapore |
| Abstract: | Nanoparticles embedded in polymeric cages give rise to interesting applications ranging from nanocatalysis to drug-delivery systems. In this context, we report on synthesis of cobalt (Co) nanoparticles trapped in polyvinyl alcohol (PVA) matrix to yield self-supporting magnetic films in PVA slime. A 20 nm, Co formed in FCC geometry encapsulated with a weak citrate coat when caged in PVA matrix exhibited persistence of magnetism and good radio-frequency response. Cross-linking of PVA chains to form cage-like structures to arrest Co nanoparticles therein, is believed to be the reason for oxide-free nature of Co, promising applications in biomedicine as well as in radio-frequency shielding. |
| Keywords: | Magnetic nanoparticle Cobalt Polyvinyl alcohol Cross-linked-polymer |
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