Introduction of copper iodide fine particles into a poly(acrylic acid) matrix via a complex of polymer–polyiodide ions

Fujimori, Yoshie; Gotoh, Yasuo; Tamaki, Naoko; Ohkoshi, Yutaka; Nagura, Masanobu

doi:10.1039/b507817b

Cited by 12 publications

(5 citation statements)

References 23 publications

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“…[15][16][17][18][19] We have reported preparative methods and optical properties for some nanocomposites with nanoparticles (e.g., silver metal, silver sulfide, copper sulfide and copper iodide) introduced into a matrix of nylon 6 or polyacrylic acid. [20][21][22] AgI is an attractive inorganic compound, and thus it is considered that AgI is a good candidate as a component of a nanocomposite material. Composites with AgI introduced into an inorganic matrix have been reported; for example, AgI nanoparticles were precipitated in-situ in nanopores of alumina prepared by the anodizing process.…”

Section: Introductionmentioning

confidence: 99%

“…These nanocomposites, with introduced nanosized metal and semiconducting particles, have very different properties, such as characteristic optical, electrical, and magnetic properties caused by the quantum size effect,15–19 from those of the bulk composite materials. We reported preparative methods and optical properties for some nanocomposites with nanoparticles (e.g., silver metal, silver sulfide, copper sulfide, copper iodide) introduced into a matrix of nylon 6 or poly(acrylic acid) 20–22…”

Section: Introductionmentioning

confidence: 99%

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Conductivity and structure of a polyamide/silver iodide nanocomposite

Fujimori

Gotoh

Kawaguchi

et al. 2008

J of Applied Polymer Sci

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In this study, the structure and properties of an organic-inorganic composite material, prepared from nylon 6 doped with fine particles of silver iodide (AgI), were examined. The preparation of the composite involved the complexation of nylon 6 with polyiodide ions such as I 3 -and I 5 -by immersion in an iodine-potassium iodide (I 2 -KI) aqueous solution followed by reaction in an AgNO 3 aqueous solution, resulting in the in-situ formation of β-AgI fine particles within the nylon 6 matrix. The AgI content formed in the composite was dependent on the immersion temperatures of the I 2 -KI and

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conductivity and structure of a polyamide/silver iodide nanocomposite

Fujimori

Gotoh

Kawaguchi

et al. 2008

J of Applied Polymer Sci

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“…(24) Figure 5 shows the electrocatalytic properties of H 2 O 2 solutions of different concentrations at the PAA-Au core Co 3 O 4shell -HRP/GC electrode. The cathodic peak current at approximately −0.35 V (vs Ag/AgCl) apparently increases, whereas its corresponding anodic peak current decreases as H 2 O 2 is successively added to PBS, suggesting a representative electrocatalytic reduction of H 2 O 2 .…”

Section: Electrocatalytic Reduction Of H 2 Omentioning

confidence: 99%

Fabrication of AucoreCo3O4shell/PAA/HRP Composite Film for Direct Electrochemistry and Hydrogen Peroxide Sensor Applications

2009

Sensors and Materials

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A completely new biosensor composed of cube-shaped Au core Co 3 O 4shell nanoparticles (Au core Co 3 O 4shell ), polyacrylic acid (PAA), and horseradish peroxidase (HRP) modifi ed fi lm electrode was fabricated for the fi rst time. The biocompatibility and electrochemical properties of the resulting Au core Co 3 O 4shell -PAA-HRP composite film were studied by electrochemical impedance spectroscopy, UV-visible spectroscopy, and cyclic voltammetry. The UV-vis spectrum obtained suggests that HRP retains its native conformation in the modifi ed fi lm. The immobilized HRP shows a pair of quasireversible redox peaks at −0.31 V in 20 mM PBS (pH 7.0), and the biosensor shows a fast amperometric response to hydrogen peroxide with a linear range of 2.0×10 −6 to 3.7×10 −4 M. The kinetic parameters such as k s (electron transfer rate constant) and K M (Michaelis-Menten constant) are evaluated to be about 7.4 s −1 and 0.91 mM, respectively. These indicate that the cube-shaped Au core Co 3 O 4shell nanoparticles are an ideal candidate material for direct electrochemistry of redox proteins and for the construction of related enzyme biosensors, and that they may fi nd potential applications to biomedical, food, and environmental analyses and detection.

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“…1×10 Fabrication of silver plated nylon 6 nanofibers using iodine We have previously reported a method to impart metal iodides into a polymer matrix by utilizing the affinity of iodine to various kinds of polymers to prepare organic/inorganic composites. For example, some polymers form complexes with polyiodide ions, and silver iodide and copper iodide can be precipitated in situ in polymer matrices by the reaction of polyiodide ions with metal ions [30,31]. The metal iodides thus introduced can be converted to metal particles in the composite by using a reducing agent.…”

Section: Introductionmentioning

confidence: 99%