Preparation of Pd Nanoparticles with Tetrahedral, Spherical, Plate, and Feather Shapes by Capping with 1-Pentyl Isocyanide
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In this study, we synthesized n-alkyl-isocyanide-protected palladium colloidal nanoparticles with different shapes. The 1-pentyl-isocyanide-protected Pd nanoparticles prepared by the reduction of the Pd complex with ethylene glycol had various geometric shapes. Transmission electron micrographs showed that tetrahedral particles were predominant, although some spherical, plate-, and feather-shaped particles were also observed. The enriched nanotetrahedra were isolated as a black powder by reprecipitation with methanol–chloroform and the particle size was controlled by the reaction conditions.
KeywordsPalladium Nanoparticles Isocyanide ligands Polyol method Particle shapes
The work was financially supported by Grant-in-Aids for Scientific Research on Innovative Areas “Coordination Programming: Science of Super-molecular Structure and Creation of Chemical Elements” (area 2107, No. 21108002), and “Molecular Architectonics: Orchestration of Single Molecules for Novel Functions” (area 2509, Nos. 26110505 and 26110506) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. This work was also supported in part by the Kurata Grant awarded by the Kurata Memorial Hitachi Science and Technology Foundation.
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