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4 protocols using fecl2 4h2o

1

Synthesis and Characterization of Prussian Blue

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Analytical reagent grade MnSO4·H2O, FeCl2·4H2O, and K3[Fe(CN)6] were obtained from Wako Pure Chemical Industries (Osaka, Japan). Agarose for electrophoresis (gel strength: 1800–2300 g cm−3) was purchased from Kanto Chemical (Tokyo, Japan). Acetic acid (1.00 M) and sodium metasilicate (Na2SiO3) aqueous solution (water-glass, 52–57% assay, 2.06–2.31 SiO2/Na2O mole ratio) were also acquired from Wako Pure Chemical Industries. All chemicals were used without further purification. All aqueous solutions were prepared using deionized water, which was purified from tap water by a cartridge water purifier (G-10, Organo, Tokyo, Japan).
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2

Radical Polymerization Catalysis Evaluation

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MPC was purchased from NOF Corporation. MES, VTPP, CuBr2, tris[(2‐pyridyl)methyl]amine (TPMA), and ethyl 2‐bromoisobutyrate (EBiB) were purchased from Sigma‐Aldrich. Ascorbic acid, FeCl2·4H2O, and FeCl3·6H2O were purchased from FUJIFILM Wako Pure Chemicals. All other reagents and solvents used in this study were commercially available reagents of ultrapure grade and were used without further purification.
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3

Hydrolyzed PVA Characterization

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99.9% hydrolyzed PVA samples (DP = 3,200) were provided by Kuraray Co. Ltd., Tokyo, Japan. Acetic acid, FeCl3·6H2O, FeCl2·4H2O, and sodium hydroxide were purchased from Wako, Osaka, Japan. All the reagents were used as received without further purification.
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4

Synthesis of Iron(II) Oxide Nanoparticles

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FeCl2·4H2O (Wako Pure Chemical Industries, Ltd., Japan) was used as the metal source precursor. The source solution was prepared by dissolving 20 mM of FeCl2·4H2O in 50 mL of distilled water. The oxidizing solution was prepared by dissolving 20 mM of sodium nitrite (NaNO2, Wako Pure Chemical Industries Ltd., Japan) in 50 mL of distilled water. Nitrogen gas was purged into the solutions at a rate of 1.0 L min−1 while stirring in order to prevent the oxidation of the reactants in the solution.
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