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Photoemission Study of Thiol-Capped Gold Nanoparticles

Published online by Cambridge University Press:  17 March 2011

Tazumi Nagasawa ,
Akinori Tanaka ,
Hiroyuki Sasaki ,
Yosuke Kuriyama ,
Shoji Suzuki ,
Shigeru Sato  and
Tsutomu Sekine
Tazumi Nagasawa
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Akinori Tanaka
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Hiroyuki Sasaki
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Yosuke Kuriyama
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Shoji Suzuki
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Shigeru Sato
Affiliation:
Department of Physics, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
Tsutomu Sekine
Affiliation:
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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Abstract

A photoemission study of dodecanethiol (DT)-capped Au nanoparticles on the highly oriented pyrolytic graphite (HOPG) substrates has been carried out in order to investigate in detail the electronic structures of metallic nanoparticles supported on the substrates. The present DT-capped Au nanoparticles show that the leading edge in the photoemission spectra near the Fermi level is not the Fermi edge, with the midpoint of the steep slope being away from the Fermi level. From these results, we discuss the electronic structures of DT-capped Au nanoparticles, especially nanoparticle-HOPG substrate interaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W9.40.1
Copyright
Copyright © Materials Research Society 2002

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