Fabrication and Characterization of Polypyrrole-Poly(N-vinylcarbazole) Core- Shell Nanospheres

摘要

Conducting polymers have extensively explored during last several decades due to their exclusive chemical and physical properties originated from the unique π-conjugated system. In particular, polypyrrole (PPy) consisting of five-membered heterocyclic rings has attracted much attention because of their good electrical conductivity, redox property, and environmental stability. In addition, PPy can be readily prepared as form of film and powder by electrochemical and chemical approaches in various organic solvents and aqueous solution. Owing to these advantages of PPy, to date, a variety of PPy-based core-shell composites have been reported in literatures. For instances, silica-PPy, pyrene-PPy, gold-PPy, poly(alkyl methacrylate)-PPy particles were fabricated, and these core-shell nanocomposites displayed various interesting characteristics concerning catalytic activity, luminescence, dielectric property. Poly(N-vinylcarbazole) (PVK) has elicited considerable interest due to its characteristic optical properties. PVK possesses a wide bandgap, which can be decorated with dyes whose color covers from blue to red, and thus it has been recognized as a promising material for full-color electroluminescent (EL) devices. Herein, we fabricated PPy-PVK core-shell nanocomposites for the first time through nanoparticle-seeded dispersion polymerization.