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Ultra-long palladium nanoworms by polymer grafts

Title data

Bokern, Stefan ; Volz, Kerstin ; Agarwal, Seema ; Greiner, Andreas:
Ultra-long palladium nanoworms by polymer grafts.
In: Journal of Nanoparticle Research. Vol. 14 (August 2012) Issue 8 .
ISSN 1572-896X
DOI: https://doi.org/10.1007/s11051-012-1041-z

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Chemically and morphologically stable, non-aggregating palladium nanoworms with diameters of 2 nm and lengths of up to 10 nm with a graft-to polystyrene shell were synthesized in a straight-forward one-phase system, and proof for the mechanism of formation is presented. The synthesis has been achieved by the application of omega-2,2'-bipyridyl-polystyrene as stabilizer, which led to a "graft-to'' structure of palladium nanoworms with polystyrene shell. The nanoworms have been characterized by TEM, XRD, and coupled GPC-UV/Vis measurement. It was possible to show that the formation of nanoworms proceeds by agglomeration of spherical palladium nanoparticles. This mechanism was transferred to omega-thiol-polystyrene as stabilizer, which results in either spherical nanoparticles (low ratio Pd:Polymer, <2 nm diameter) or high aspect ratio nanoworms (high ratio Pd: Polymer, up to 10 x 120 nm), proving that the formation of palladium nanoworms was not exclusive for pyridine/amine-based ligands.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Core/shell materials; Gel permeation chromatography; Nanostructures; Nanoparticles; Palladium
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 31 Mar 2015 09:43
Last Modified: 31 Mar 2015 09:43
URI: https://eref.uni-bayreuth.de/id/eprint/9499