II. Aerogel and Xerogel

An EXAFS study on thiolcapped CdTe nanocrystals

  1. Jörg Rockenberger1,†,
  2. Larc Tröger2,
  3. Andrey L. Rogach1,*,
  4. Markus Tischer2,
  5. Marius Grundmann3,
  6. Horst Weller1,
  7. Alexander Eychmüller1,*

Article first published online: 22 JUN 2010

DOI: 10.1002/bbpc.19981021110

Issue

Berichte der Bunsengesellschaft für physikalische Chemie

Berichte der Bunsengesellschaft für physikalische Chemie

Volume 102, Issue 11, pages 1561–1564, November 1998

Additional Information

How to Cite

Rockenberger, J., Tröger, L., Rogach, A. L., Tischer, M., Grundmann, M., Weller, H. and Eychmüller, A. (1998), An EXAFS study on thiolcapped CdTe nanocrystals. Berichte der Bunsengesellschaft für physikalische Chemie, 102: 1561–1564. doi: 10.1002/bbpc.19981021110

Author Information

  1. 1

    Universität Hamburg, Institut für Physikalische Chemie, Bundesstr. 45, D-20146 Hamburg, Germany

  2. 2

    Hamburger Synchrotronstrahlungslabor HASYLAB, DESY, Notkestr. 85, D-22603 Hamburg, Germany

  3. 3

    Technische Universität Berlin, Institut für Festkörperphysik, Hardenbergstr. 36, D-10623 Berlin, Germany

  1. †

    University of California, Berkeley, Department of Chemistry, Berkeley, CA 94720, USA

*Belarussian State University, Physico-Chemical Research Institute, 220050 Minsk, Belarus

Publication History

  1. Issue published online: 22 JUN 2010
  2. Article first published online: 22 JUN 2010

Funded by

  • The Deutsche Forschungsgemeinschaft
  • The Volkswagen Stiftung, Hannover

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Keywords:

  • Clusters;
  • Colloides;
  • Spectroscopy, X-ray

Abstract

Temperature dependent EXAFS measurements have been carried out on 2-mercaptoethanol-stabilized CdTe nanocrystals. The technique allows to study the structural and dynamic properties of the CdTe core and the Cd-SR (R = organic rest) shell separately. Based on the coordination numbers and the Cd/Te-ratio determined by EXAFS, the formula [Cd54 Te32(SCH2CH2OH)52]8− is suggested. The underlying structure is a tetrahedral CdTe core (zincblende) partially coated by a Cd-SR surface layer.

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