X-Ray Photoelectron Spectroscopy of Core (Silver)–Shell (Polydiacetylene) Type Hybridized Nanocrystals

Hideki Yoshikawa; Aurel M. Vlaicu; Masahiro Kimura; Akito Masuhara; Shigeo Tanuma; Hachiro Nakanishi; Hidetoshi Oikawa

doi:10.1380/ejssnt.2009.711

Regular Papers

X-Ray Photoelectron Spectroscopy of Core (Silver)–Shell (Polydiacetylene) Type Hybridized Nanocrystals

Hideki Yoshikawa, Aurel M. Vlaicu, Masahiro Kimura, Akito Masuhara, Shigeo Tanuma, Hachiro Nakanishi, Hidetoshi Oikawa

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Keywords: Polydiacetylene, Co-reprecipitation method, Hybridized nanocrystal, Nano-particles, Silver, Plasmon, Synchrotron radiation photoelectron spectroscopy, X-ray absorption spectroscopy

JOURNAL FREE ACCESS

2009 Volume 7 Pages 711-714

DOI https://doi.org/10.1380/ejssnt.2009.711

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Abstract

In the core-shell type hybridized nanocrystals composed of silver (Ag)-core and polydiacetylene (PDA)-shell, the localized surface plasmon (LSP) from Ag-core disappeared during solid-state polymerization in the coreprecipitation method. From high-energy X-ray photoelectron spectroscopy measured with synchrotron radiation X-ray in SPring-8, it has become apparent that a Ag-core is composed of nano-sized conductive domains. Domain boundaries may cause the reduction of the conduction electron mean free path in a Ag-core, and may be responsible for LSP damping without changing the plasmon frequency. [DOI: 10.1380/ejssnt.2009.711]

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