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Multishell EXAFS Fitting Analysis of a Compositionally Precise Thiolate-Gold Nanocluster

Published online by Cambridge University Press:  06 May 2014

Daniel M. Chevrier ,
Amares Chatt ,
Peng Zhang ,
Chenjie Zeng  and
Rongchao Jin
Daniel M. Chevrier
Affiliation:
Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
Amares Chatt
Affiliation:
Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
Peng Zhang
Affiliation:
Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
Chenjie Zeng
Affiliation:
Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
Rongchao Jin
Affiliation:
Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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Abstract

Thiolate-gold nanoclusters exhibit unique optical, magnetic and chiral properties, which are attractive for novel applications in nanotechnology. A fundamental challenge facing these nanomaterials is being able to study and understand their physical properties in various experimental conditions. To overcome this, extended X-ray absorption fine structure (EXAFS) spectroscopy can be employed to probe the Au local structure of thiolate-gold nanoclusters in a variety of conditions, providing valuable structural information from multiple bonding environments (i.e. metal-metal and metal-ligand interactions). This study discusses a methodology for conducting a multishell EXAFS fitting analysis that can be implemented for thiolate-gold nanocluster systems. Specifically, experimental and simulated EXAFS data for Au36(SR)24 nanoclusters are examined with a total of 5 scattering paths fitted to the experimental data.

Keywords

nanostructureAubonding
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1655: Symposium OO – Solid-State Chemistry of Inorganic Materials , 2014 , mrsf13-1655-oo05-01
Copyright
Copyright © Materials Research Society 2014 

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