Preparation of Rh-containing polycarbonate films and the study of their chemical properties in the polymer

Preparation of Silver Nanoparticles in Cellulose Acetate Polymer and the Reaction Chemistry of Silver Complexes in the Polymer

“…This assumption was verified by the careful infrared spectroscopic study of silver-containing CA films; the characteristic ν (C=O) band of pure CA at 1748 cm −1 shows a slight red shift to 1744 cm −1 upon incorporation of silver cations into CA, indicating C=O bond weakening, and correspondingly, Notes ν (C-O) band of acetate group at 1235 cm −1 is shifted to a higher frequency at 1239 cm −1 . These interactions are quiet weak in comparison to other transition metal complexcontaining CA cases [5][6][7][8] and it is likely to be reasonable in consideration of the relatively low oxidation state of silver cation. These weak interactions were corroborated by simple elution experiments through UV/Vis spectroscopic analysis; about 95% silver compounds are found to be extracted out from CA matrix in water at room temperature.…”

“…Pure cellulose acetate (CA) and silver-containing CA films (metal complex concentration: 5-20 wt.%) were prepared as previously reported, [6][7][8][9] using cellulose acetate, AgNO 3 (Aldrich), and 2-methoxyethanol (Aldrich). For a typical preparation of 10 wt.% silver acetate-containing CA films (designated as 10 wt.% [CA-Ag] film), 3.6 g of cellulose acetate and 0.4 g of AgNO 3 were dissolved in 100 mL 2-methoxyethanol, and the resulting mixture was boiled gently in the fume hood for 15 min.…”

“…[2][3][4] We reported a series of articles about the preparation of Ru, Rh, Pd, Fe, and Cu metal nanoparticles in various polymers such as cellulose acetate, polycarbonate, polysulfone, and silicon rubber in addition to their reaction chemistry; the transition metal nanoparticles in those polymer matrices showed quite interesting chemical and/or catalytic reactivity toward various small gas molecules under relatively mild conditions, which are quite different from those of corresponding free transition metal complexes or from those in inorganic oxide-supported systems. [5][6][7][8] In general, the inert polymer itself was found to significantly affect on the reaction chemistry of various transition metal complexes in the polymer although there are only a few systemic comparative studies on this subject. Meanwhile, it is well known that silver is superior to other metals in electrical property, antimicrobial effect, optical properties, and oxidation catalysis.…”

Porous polymers and metallic nanoparticles: A hybrid wedding as a robust method toward efficient supported catalytic systems

“…Then, the metal is reduced to its zero state through a reduction step. Several reducing agents are routinely used in organic synthesis (Table 5) and can be also envisaged for metal reduction, like NaBH4 [133,134], citrates [135,136] (in the so-called Turkevitch process), hydrazine [137] or even H2 [138,139]. The choice of the reducing agent will depend on the size and shape desired for the NPs and is crucial to achieve controlled synthesis.…”