Facile Fabrication of Size-Tunable Core/Shell Ferroelectric/Polymeric Nanoparticles with Tailorable Dielectric Properties via Organocatalyzed Atom Transfer Radical Polymerization Driven by Visible Light.

ABSTRACT: An unconventional but facile approach to prepare size-tunable core/shell ferroelectric/polymeric nanoparticles with uniform distribution is achieved by metal-free atom transfer radical polymerization (ATRP) driven by visible light under ambient temperature based on novel hyperbranched aromatic polyamides (HBPA) as a functional matrix. Cubic BaTiO₃/HBPA nanocomposites can be prepared by in-situ polycondensation process with precursors (barium hydroxide (Ba(OH)₂) and titanium(IV) tetraisopropoxide (TTIP)) of ferroelectric BaTiO₃ nanocrystals, because precursors can be selectively loaded into the domain containing the benzimidazole rings. At 1200 °C, the aromatic polyamide coating of cubic BaTiO₃ nanoparticles are carbonized to form carbon layer in

SUBMITTER: You N 

PROVIDER: S-EPMC6372659 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature