TEM characterization of diblock copolymer templated iron oxide nanoparticles: Bulk solution and thin film surface doping approach |
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| Authors: | Pinar Akcora Peter Kofinas |
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| Affiliation: | a Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742-2111, USA
b Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | The morphology of a novel diblock copolymer, poly(norbornene methanol)-b-poly(norbornene dicarboxylic acid), was investigated before and after metal oxide doping by transmission electron microscopy (TEM) using a novel iodine vapor staining method to image the undoped polymer. A lamellar morphology was observed by TEM after staining the undoped diblock copolymer with iodine vapor. Thin film surface doping resulted in a confinement of the iron oxide nanoparticles within the lamellar domains. Spherical nanoparticle aggregates were observed through a bulk solution doping method. It was observed that the particles were templated by the underlying lamellar structure of the copolymer when the thin film surface doping method was used. |
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| Keywords: | Diblock copolymer Iodine staining Iron oxide nanoparticles |
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