Stop-and-go, stepwise and “ligand-free” nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs)

Engelbert Redel; Michael Walter; Ralf Thomann; Laith Hussein; Michael Krüger; Christoph Janiak

doi:10.1039/B921744D

Stop-and-go, stepwise and “ligand-free” nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs)

Engelbert Redel,^a Michael Walter,*^b Ralf Thomann,^b Laith Hussein,^b Michael Krüger^b and Christoph Janiak*^a

* Corresponding authors

^a Institut für Anorganische und Analytische Chemie, Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
E-mail: janiak@uni-freiburg.de
Tel: +49 761 2036127

^b Freiburger Material Forschungszentrum, Institut für Mikrosystemtechnik, Universität Freiburg, Stefan-Meier-Str. 21 and Georg Köhler Allee 103, 79104 Freiburg, Germany
E-mail: michael.walter@fmf.uni-freiburg.de

Abstract

Ionic liquids function as a nanosynthetic template for a “ligand-free” stepwise formation of gold nanoparticles (Au-NPs) which can be stopped and resumed at different color steps and Au-NP sizes (between 2.6 and 200 nm median diameter) and which can be reasoned by the DFT-calculation stabilization order: H₂O (no Au-NP stabilization) < IL anion, e.g. BF₄⁻ ≈ PH₃ < citrate <Cl⁻ (which inhibits Au-NP growth).

Supplementary files

Publication details

The article was received on 19 Oct 2009, accepted on 02 Dec 2009 and first published on 04 Jan 2010

Article type: Communication

DOI: 10.1039/B921744D

Citation: Chem. Commun., 2010,46, 1159-1161

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Stop-and-go, stepwise and “ligand-free” nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs)

E. Redel, M. Walter, R. Thomann, L. Hussein, M. Krüger and C. Janiak, Chem. Commun., 2010, 46, 1159
DOI: 10.1039/B921744D
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Chemical Communications

Stop-and-go, stepwise and “ligand-free” nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs)

Abstract

Supplementary files

Publication details

Stop-and-go, stepwise and “ligand-free” nucleation, nanocrystal growth and formation of Au-NPs in ionic liquids (ILs)

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