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The European Physical Journal D

, Volume 43, Issue 1–3, pp 233–236 | Cite as

Electronic structure of dendrimer-encapsulated Au nanocluster

  • M. ImamuraEmail author
  • T. Miyashita
  • A. Tanaka
  • H. Yasuda
  • Y. Negishi
  • T. Tsukuda
Electronic Structure and Quantum Effects in Low Dimensional Systems

Abstract.

We have carried out optical and X-ray photoemission studies of the dendrimer-encapsulated Au nanoclusters. The dendrimer-encapsulated Au nanoclusters are prepared by the chemical reduction of Au ions loaded within the dendrimer templates. Photoluminescence spectrum of the dendrimer-encapsulated Au nanoclusters with diameter of about 1.0 nm shows the visible luminescence centered at about 2.8 eV. In addition, we have measured the nanocluster-size dependent photoemission spectra in the valence-band region. From line shape analysis of Au 4f X-ray photoemission spectra, Au 4f core-level spectra of the dendrimer-encapsulated Au nanoclusters reflect the size dependent chemical-states. From these results, we discuss electronic structures and chemical states of the dendrimer-encapsulated Au nanoclusters.

PACS.

73.22.-f Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals 81.07.Pr Organic-inorganic hybrid nanostructures 

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References

  1. M.J. Hostetler, J.E. Wingate, C. Zhong, J.E. Harris, R.W. Vachet, M.R. Clark, J.D. Londono, S.J. Green, J.J. Stokes, G.D. Wignall, G.L. Glish, M.D. Porter, N.D. Evans, R.W. Murray, Langmuir 14, 17 (1998) CrossRefGoogle Scholar
  2. M. Alvarez, J.T. Khoury, T.G. Shaaff, M.N. Shafigullin, I. Vezmar, R.L. Whetten, J. Phys. Chem. 101, 3706 (1997) Google Scholar
  3. Y.G. Kim, J.C.G. Martinez, R.M. Crooks, Langmuir 21, 5485 (2005) CrossRefGoogle Scholar
  4. J. Zheng, C. Zhang, R.M. Dickson, Phys. Rev. Lett. 93, 077402 (2004) CrossRefADSGoogle Scholar
  5. T. Endo, T. Yoshimura, K. Esumi, Coll. Int. Sci. 269, 364 (2004) CrossRefGoogle Scholar
  6. A. Bzowski, T.K. Sham, R.E. Watson, M. Weinert, Phys. Rev. B 51, 9979 (1995) CrossRefADSGoogle Scholar
  7. A. Tanaka, Y. Takeda, M. Imamura, S. Sato, Phys. Rev. B 59, 195415 (2003) CrossRefADSGoogle Scholar
  8. A. Tanaka, Y. Takeda, T. Nagasawa, K. Takahashi, Solid State Commun. 126, 191 (2003) CrossRefGoogle Scholar
  9. T.C. Hsieh, A.P. Shapiro, T.C. Chiang, Phys. Rev. B 73, 3160 (1983) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  • M. Imamura
    • 1
    Email author
  • T. Miyashita
    • 2
  • A. Tanaka
    • 1
    • 2
  • H. Yasuda
    • 1
    • 2
  • Y. Negishi
    • 3
  • T. Tsukuda
    • 3
  1. 1.Department of Mechanical and Systems EngineeringKobe UniversityKobeJapan
  2. 2.Department of Mechanical EngineeringKobe UniversityKobeJapan
  3. 3.Research Center for Molecular-Scale Nanoscience, Institute for Molecular ScienceAichiJapan

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