title: Development of Hierarchical Polymer@Pd Nanowire-Network: Synthesis and Application as Highly Active Recyclable Catalyst and Printable Conductive Ink.
abstract: A facile one-pot approach for preparing hierarchical nanowire-networks of hollow polymer@Pd nanospheres is reported. First, polymer@Pd hollow nanospheres were produced through metal-complexation-induced phase separation with functionalized graft copolymers and subsequent self-assembly of PdNPs. The nanospheres hierarchically assembled into the nanowire-network upon drying. The Pd nanowire-network served as an active catalyst for Mizoroki-Heck and Suzuki-Miyaura coupling reactions. As low as 500 μmol % Pd was sufficient for quantitative reactions, and the origin of the high activity is ascribed to the highly active sites originating from high-index facets, kinks, and coalesced structures. The catalyst can be recycled via simple filtration and washing, maintaining its high activity owing to the micrometer-sized hierarchical structure of the nanomaterial. The polymer@Pd nanosphere also served as a printable conductive ink for a translucent grid pattern with excellent horizontal conductivity (7.5×10(5) S m(-1)).
authors.affiliation: Department of Chemistry and Chemical Engineering Faculty of Engineering Yamagata University 4-3-16 Jonan Yonezawa 992-8510 Japan.
authors.forename: Sajjad Husain
authors.initials: SH
authors.lastname: Mir
authors.affiliation: Department of Chemistry and Chemical Engineering Faculty of Engineering Yamagata University 4-3-16 Jonan Yonezawa 992-8510 Japan.
authors.forename: Bungo
authors.initials: B
authors.lastname: Ochiai
keywords: Pd nanowire-network; hollow nanoparticles; immobilized catalysts; printable conductive ink; self-assembly