Publikation:

Synthesis of Core-Shell Gold Nanoparticles with Maltose-Modified Poly(Ethyleneimine)

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Datum

2012

Autor:innen

Köth, Anja
Tiersch, Brigitte
Appelhans, Dietmar
Gradzielski, Michael
Koetz, Joachim

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http://nbn-resolving.de/urn:nbn:de:bsz:352-226262
DOI (zitierfähiger Link)
https://doi.org/10.1080/01932691.2010.530084
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Chemie: Publikationen
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Journal of Dispersion Science and Technology. 2012, 33(1), pp. 52-60. ISSN 0193-2691. eISSN 1532-2351. Available under: doi: 10.1080/01932691.2010.530084

Zusammenfassung

The synthesis of ultrafine gold nanoparticles in presence of maltose-modified hyperbranched poly(ethyleneimines) (PEI) is described. The polymer acted as both a reducing and stabilising agent in the particle formation process. The nanoparticles were characterized by means of dynamic light scattering (DLS), transmission electron microscopy (TEM), analytical ultracentrifugation (AUC), small-angle x-ray scattering (SAXS), and small-angle neutron scattering (SANS). The mechanism of nanoparticle formation can be described in two steps. The reduction process of the Au3+ ions located in the inner coil region of the hyperbranched PEI led to the formation of a compact gold core, and is accompanied by a collapse of the polymer coil. Therefore, in the subsequent reduction process a gold-polymer hybrid shell is formed. By using the PEI of higher molar mass, core-shell gold nanoparticles of about 3.6 nm size with a more narrow size distribution and special fluorescence behavior could be synthesized.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
540 Chemie

Schlagwörter

Gold nanoparticles, gold-polymer hybrid shell, maltose-modified poly(ethyleneimine)

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ISO 690KÖTH, Anja, Brigitte TIERSCH, Dietmar APPELHANS, Michael GRADZIELSKI, Helmut CÖLFEN, Joachim KOETZ, 2012. Synthesis of Core-Shell Gold Nanoparticles with Maltose-Modified Poly(Ethyleneimine). In: Journal of Dispersion Science and Technology. 2012, 33(1), pp. 52-60. ISSN 0193-2691. eISSN 1532-2351. Available under: doi: 10.1080/01932691.2010.530084
BibTex
@article{Koth2012Synth-22626,
  year={2012},
  doi={10.1080/01932691.2010.530084},
  title={Synthesis of Core-Shell Gold Nanoparticles with Maltose-Modified Poly(Ethyleneimine)},
  number={1},
  volume={33},
  issn={0193-2691},
  journal={Journal of Dispersion Science and Technology},
  pages={52--60},
  author={Köth, Anja and Tiersch, Brigitte and Appelhans, Dietmar and Gradzielski, Michael and Cölfen, Helmut and Koetz, Joachim}
}
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