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Precisely Designed Gold Nanoparticles by Surface Polymerization : Artificial Molecules as Building Blocks for Novel Materials

Titelangaben

Bokern, Stefan ; Gries, Katharina ; Goertz, Hans-Helmut ; Warzelhan, Volker ; Agarwal, Seema ; Greiner, Andreas:
Precisely Designed Gold Nanoparticles by Surface Polymerization : Artificial Molecules as Building Blocks for Novel Materials.
In: Advanced Functional Materials. Bd. 21 (2011) Heft 19 . - S. 3753-3759.
ISSN 1616-3028
DOI: https://doi.org/10.1002/adfm.201100590

Angaben zu Projekten

Projektfinanzierung: BASF SE

Abstract

The synthesis of gold nanoparticles (2-4 nm) carrying a single functional polystyrene chain and its characterization by gel permeation chromatography are reported. This has been achieved by a new type of macromolecular azo-initiator based on telechelic polystyrene with containing alpha,omega-methylcoumarin endgroups and an azo group in the middle of the polystyrene. The structure and the near-quantitative functionality of the initiator have been verified by performing NMR, GPC, and UV-vis measurements. This macroinitiator has been used to initiate a surface polymerization of 4-vinylthiophenol molecules immobilized on the surface of gold nanoparticles. As a product, gold nanoparticles carrying exactly one polystyrene chain have been synthesized with functionalization degrees of up to 90% (crude yield). Proof and quantification of the functionalization degree have been demonstrated by application of a GPC setup with a diode array detector for online UV-vis spectra.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: RADICAL POLYMERIZATION
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 31 Mär 2015 10:34
Letzte Änderung: 25 Feb 2022 08:05
URI: https://eref.uni-bayreuth.de/id/eprint/9526