Formation and encapsulation of gold nanoparticles using a polymeric
amine reducing agent |
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Authors: | J D S Newman G J Blanchard |
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Institution: | (1) Department of Chemistry, Michigan State University, East Lansing, MI 48824-1322, USA |
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Abstract: | We report on the use of poly(allylamine) hydrochloride (PAH) as a reducing agent for the controlled formation of gold nanoparticles
(AuNPs) in the size range of 5–50 nm. The formation of AuNPs using this polymer matrix allows for the AuNPs to be imbedded
in the polymer matrix, once formed. The kinetics of AuNP formation are shown to be pseudo first-order in HAuCl4] at room temperature. The kinetics of AuNP formation are controlled by the ratio of reducing agent to HAuCl4 as well as the overall concentration of the PAH and HAuCl4. Additionally, at low PAH:HAuCl4 mole ratios, the plasmon resonance wavelength can be controlled through the ratio of the reactants. This plamson resonance
shift is shown to be related to AuNP size by means of TEM imaging data on the AuNPs. |
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Keywords: | gold nanoparticle growth poly(allylamine) polymer encapsulation plasmon resonance coatings |
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