Polyferrocenylsilane (PFS)-based polymers are an attractive family of organometallic polymers with unique redox-active properties. Herein, we report a novel amphiphilic redox-active PFS-based homopolymer, poly(ferrocenylmethylethylthiocarboxypropylsilane) (PFC), with a hydrophobic backbone chain and hydrophilic carboxylic acid side groups in each repeating unit. Self-assembly was induced by addition of water to a molecularly dispersed solution of PFC in DMSO. Spherical PFC micelles with controllable hydrodynamic diameters (60–180 nm) were obtained under various conditions. These PFC micelles could be readily endocytosed by A549 cells and HUVEC cells and show no significant cytotoxicity toward them at the concentration of 200 μg/mL. On this basis, Au nanoparticles (AuNPs) were prepared through in situ reduction of HAuCl₄ by PFC micelles as nanoreactors without requiring any other reductants. The PFC/Au nanocomposites (NCs) were found to exhibit significant photothermal behavior. Moreover, PFC micelles could also act as nanoreactors for other noble metals such as Ag, Pd, and Pt. By taking advantage of properties of the nanostructures and noble metal nanoparticles comprising these materials, the PFC micelles and PFC/noble metal NCs may have great potential in biomedical or catalytic applications.

中文翻译：

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原位制备具有光热转化能力的贵金属纳米复合材料的基于氧化还原活性胶束的反应平台

基于聚二茂铁基硅烷（PFS）的聚合物是具有独特的氧化还原活性的有机金属聚合物的一个有吸引力的家族。在这里，我们报告了一种新型的两亲氧化还原活性基于PFS的均聚物，聚（二茂铁基甲基乙基硫代羧丙基硅烷）（PFC），在每个重复单元中均具有疏水性主链和亲水性羧酸侧基。通过将水添加到PFC在DMSO中的分子分散溶液中来诱导自组装。在各种条件下均获得了可控流体动力学直径（60-180 nm）的球形PFC胶束。这些PFC胶束很容易被A549细胞和HUVEC细胞内吞，在200μg/ mL的浓度下对它们没有明显的细胞毒性。在此基础上，通过原位制备金纳米颗粒（AuNPs）通过PFC胶束作为纳米反应器可降低HAuCl ₄的含量，而无需任何其他还原剂。发现PFC / Au纳米复合材料（NCs）表现出显着的光热行为。此外，PFC胶束还可以充当其他贵金属（例如Ag，Pd和Pt）的纳米反应器。通过利用包含这些材料的纳米结构和贵金属纳米颗粒的特性，PFC胶束和PFC /贵金属NC可以在生物医学或催化应用中具有巨大的潜力。