Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Ultrasound-Mediated Synthesis of High-Molecular Weight Polystyrene-Grafted Silver Nanoparticles by Facile Ligand Exchange Reactions in Suspension

Title data

Pletsch, Holger ; Peng, Ling ; Mitschang, Fabian ; Schaper, Andreas ; Hellwig, Michael ; Nette, David ; Seubert, Andreas ; Greiner, Andreas ; Agarwal, Seema:
Ultrasound-Mediated Synthesis of High-Molecular Weight Polystyrene-Grafted Silver Nanoparticles by Facile Ligand Exchange Reactions in Suspension.
In: Small. Vol. 10 (15 January 2014) Issue 1 . - pp. 201-208.
ISSN 1613-6829
DOI: https://doi.org/10.1002/smll.201300594

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Ultrasound mediated facile ligand exchange method in suspension for the formation of polystyrenegrafted silver nanoparticles is reported. Amazingly, this method allows even grafting of very high molecular weight polystyrenes (up to 217 200 g mol(-1)) having a single terminal thiol group at the chain end. Detailed studies are carried out to gain insights in the role of molecular weight of the ligands and the mechanism of the ligand exchange reactions. Key factors are determined to be the droplet formation by ultrasonification and low silver content, which enhances the availability of the terminal thiol end group significantly. The extraordinary compatibility of the ligand exchange method in particular regarding high molecular weights is attributed to hydrophilic orientation of the terminal thiol groups at the liquidliquid interphase. This is proved conclusively by using an in situ method as a reference approach in which agglomeration occurs at considerably lower molecular weights due to the absence of preferred end group orientation within the polymer coil. In homogeneous phase only the chain length is found to be the crucial factor in stabilization of silver nanoparticles.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: silver nanoparticles; ligand exchange; ultrasound; metalpolymer hybrids
Institutions of the University: 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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 10 Mar 2015 11:54
Last Modified: 31 Mar 2015 07:14
URI: https://eref.uni-bayreuth.de/id/eprint/7997