Issue 12, 2002
From the journal:

Journal of Materials Chemistry

Effect of composition and structure of gold/copper bimetallic nanoparticles on dispersion in polymer thin films

Kensuke Akamatsu,†a   Takeshi Kawamura,b   Hideki Nabika,a   Shigehito Deki,*ab   Thomas Strunskus‡c  and  Franz Faupelc  

* Corresponding authors

a Division of Molecular Science, Graduate School of Science & Technology, Kobe University, Rokkodai, Nada, Kobe, Japan

b Department of Chemical Science & Engineering, Faculty of Engineering, Kobe University, Rokkodai, Nada, Kobe, Japan
E-mail: deki@kobe-u.ac.jp

c Lehrstuhl für Materialverbunde, Technische Fakultät der Universität Kiel, Kaiserstrasse 2, Kiel, Germany

Abstract

The effect of composition on the dispersion of AuxCu1 − x bimetallic nanoparticles into a nylon 11 matrix has been investigated. TEM, UV–VIS, EDX, and XPS depth profiling were used for characterizing the changes in the composition of the bimetallic particles and the depth distribution of the particles in the nylon 11 layer caused by annealing in an N2 atmosphere. TEM observation and EDX analysis revealed that island-like bimetallic particles were formed on the nylon 11 surface before annealing, the composition of which was systematically controlled. Upon annealing in an N2 atmosphere, the AuxCu1 − x bimetallic particles with x ≤ 0.55 were not dispersed into the nylon 11 layer while those with x ≥ 0.70 were homogeneously dispersed in the films, indicating the existence of a critical composition for penetration of the bimetallic particles. By comparing the composition and structure of the bimetallic particles, the cause of these finding is discussed in terms of the surface free energy of the particles, which can be varied with their composition by the effect of alloying.

Graphical abstract: Effect of composition and structure of gold/copper bimetallic nanoparticles on dispersion in polymer thin films

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Article information

DOI
https://doi.org/10.1039/B207799J
Article type
Paper
Submitted
16 May 2002
Accepted
02 Sep 2002
First published
07 Oct 2002

J. Mater. Chem., 2002,12, 3610-3614

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Effect of composition and structure of gold/copper bimetallic nanoparticles on dispersion in polymer thin films

K. Akamatsu, T. Kawamura, H. Nabika, S. Deki, T. Strunskus and F. Faupel, J. Mater. Chem., 2002, 12, 3610 DOI: 10.1039/B207799J

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