Electrostatic force microscopy measurements of CdSe-PS nanoparticles and CdSe-PS/poly(styrene-b-butadiene-b-styrene) nanocomposites |
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Authors: | Haritz Etxeberria Agnieszka Tercjak Iñaki Mondragon Arantxa Eceiza Galder Kortaberria |
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Institution: | 1. Group ‘Materials + Technologies,’ Escuela Politécnica, Department of Chemical and Environmental Engineering, Universidad País Vasco/Euskal Herriko Unibertsitatea, Pza. Europa 1, 20018, San Sebastián, Spain
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Abstract: | Electrostatic force microscopy (EFM) measurements were performed to analyze the conductive properties of CdSe nanoparticles functionalized with polystyrene (PS) brushes and embedded in a poly(styrene-b-butadiene-b-styrene) triblock copolymer. CdSe nanoparticles were synthesized aqueously and functionalized with polystyrene chains by the grafting through technique. CdSe-PS nanoparticles obtained after 5 and 8 h of polymerization were analyzed, in order to study the effect of the molecular weight of PS chains on conductive properties. EFM results showed the maintenance of the conductive properties of CdSe nanoparticles through functionalization reactions and even when they were confined in the block copolymer. Due to the low differences between the values obtained in the response of the samples to the charged tip, no effect of the molecular weight of brushes was confirmed. |
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