Abstract
Reported in this paper is the preparation of e-Co nanocrystals coated by a monolayer of poly(acrylic acid)-block-polystyrene or PAA−PS. This method is adopted from one using oleic acid as the surfactant. The replacement of oleic acid by PAA−PS as the surfactant during Co nanoparticle preparation yields Co/PAA−PS particles that can be solvent-cast to yield bulk films. For the multidentate nature of the PAA binding block, the PAA−PS coating is resistant toward solvent rinsing. The thickness of the coating can be increased by increasing the length of the PS block.
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