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A Comparison of the Photophysical Properties of Thiolate-Capped CdS Quantum Dots with Thiolate-Capped CdS Molecular Clusters

Published online by Cambridge University Press:  10 February 2011

Lee K. Yeung ,
Kelly Sooklal ,
Rahina Mahtab ,
Bin Zhang ,
Richard D. Adams  and
Catherine J. Murphy
Lee K. Yeung
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
Kelly Sooklal
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
Rahina Mahtab
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
Bin Zhang
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
Richard D. Adams
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
Catherine J. Murphy
Affiliation:
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208
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Abstract

In the last several years, great advances have been made in the ability to synthesize semiconductor quantum dots with very narrow size distributions. Here, we report the synthesis of a series of thiolate-capped CdS quantum dots having reasonably narrow size distributions and make optical property comparisons to the crystallographically defined CdS molecular clusters having essentially “zero” size distribution. These clusters contain a “Cd10S4” core and thiolate/halide capping ligands. The luminescence of the molecular clusters, like the nanoparticles, is greatly influenced by the nature of the capping ligands. Additionally, the luminescence of the molecular clusters can be quite similar to that observed for their larger quantum dot counterparts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 571: Symposium W – Semiconductor Quantum Dots , 1999 , 247
Copyright
Copyright © Materials Research Society 2000

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