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Gold Nanoparticles Stabilized by Molecular Fullerenols
ChemNanoMat ( IF 3.8 ) Pub Date : 2020-03-06 , DOI: 10.1002/cnma.201900778
Ken Kokubo 1, 2 , Mark Kristan Espejo Cabello 1 , Nozomi Sato 1 , Yuta Uetake 1 , Hidehiro Sakurai 1
Affiliation  

Polyhydroxylated fullerene derivatives (fullerenols: C60(OH)12 and C60(OH)36) exhibit excellent stabilizing matrices for gold nanoparticles. Au:C60(OH)12 and Au:C60(OH)36 form hydrophilic colloids and are well dispersed in H2O, even though C60(OH)12 itself is barely dissolved in H2O. It was estimated that C60(OH)12 forms a two‐ to three‐layered structure with 3D O−H⋅⋅⋅O hydrogen‐bonding networks, surrounding approximately 3 nm‐sized Au NPs. The thus‐prepared Au:C60(OH)n colloids exhibited a high catalytic activity toward the reduction of 4‐nitrophenol to 4‐aminophenol. The short induction period as well as kinetic and thermodynamic parameters indicated the dynamic mobility of the fullerenol matrix and the hydrophobic nature of the interface between the Au surface and the matrix.

中文翻译:

分子富勒烯醇稳定的金纳米颗粒

多羟基化的富勒烯衍生物(富勒烯醇:C 60(OH)12和C 60(OH)36)对金纳米颗粒表现出优异的稳定基质。的Au:C 60(OH)12和Au:C 60(OH)36形式的亲水性胶体和良好地分散H中2 O,即使Ç 60(OH)12本身几乎不溶于H中2 O.据估计C 60(OH)12形成具有3D OH·⋅⋅O氢键网络的两层至三层结构,围绕着约3 nm大小的Au NP。制备的Au:C 60(OH)n胶体对4-硝基苯酚还原为4-氨基苯酚具有很高的催化活性。短的诱导期以及动力学和热力学参数表明了富勒烯醇基质的动态迁移率和Au表面与基质之间界面的疏水性质。
更新日期:2020-03-06
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