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International Letters of Chemistry, Physics and Astronomy
Volume 49

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Preparation and Optical Properties of PS @Au-Cu Core-Shell Nano Composite

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Abstract:

An appropriate low-cost uncomplicated chemical method has been used to obtain the optical properties in the production of plasmon by manufacturing nanomaterial's consisting of dielectric core and a shell that grows on its surface . This core consists of the polystyrene PS and a gold – copper shell. The synthesis was made in two steps . In the first step PS core was fabricated , then coated by a shell consisting of Au –Cu particles . The shell shape differs according to the change in the amount of molar concentrations of Cu, and H2O2. It is found that variation of this materials amount gives us absorbance measurements (Localised Surface Plasmon Resonance, LSPR) that increase proportionally with changing quantities directly, where the size of core is constant .And the peak position in blue shift high energy then changes to red shift low energy . This change depends on the size and shape of particles. The same case applies for the transmittance of its change with the change of this material. The nano shell was characterized by using Scanning electron microscopy,SEM and UV –vis spectroscopy by varying the amount of Cu and H2O2.

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Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 49)
Pages:
81-89
Citation:
A. Rudainah et al., "Preparation and Optical Properties of PS @Au-Cu Core-Shell Nano Composite", International Letters of Chemistry, Physics and Astronomy, Vol. 49, pp. 81-89, 2015
Online since:
April 2015
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