Reaction of elemental sulfur with 1,1′-bis(dimethylallylsilyl)ferrocene (1) in 50 : 50 or 70 : 30 wt% at 130 °C results in new polymeric materials as a consequence of an inverse vulcanization process. Through this procedure, allylsilyl-functionalized ferrocene moieties are integrated into a solid matrix structured by the formation of covalent C–S bonds between sulfur atom chains and organometallic co-monomers. The structure and composition of the amorphous materials obtained have been assessed by elemental analysis, TXRF, ATR-IR, solid-state NMR, XPS and SEM. Remarkably, the electrochemical activity of ferrocene fragments is preserved when incorporated into the polysulfide material. Consequently, 1 is the first silicon- and ferrocene-containing molecule being used as a co-monomer to develop redox-responsive polysulfide materials. Furthermore, the interaction of sulfur atoms with Cd(II) or Hg(II) metal centers, present in aqueous solutions, results in the modulation of the electrochemical signal of ferrocene moieties. Therefore, this work presents the synergistic combination of polysulfide chains and ferrocene fragments resulting in electrochemical recognition of harmful metal centers commonly present in polluted hydric resources.

中文翻译：

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通过二烯丙基甲硅烷基官能化二茂铁的反硫化获得的电活性富硫材料

元素硫与 1,1'-双（二甲基烯丙基甲硅烷基）二茂铁 ( 1 ) 以 50: 50 或 70: 30 wt% 在 130 °C 下反应，通过逆向硫化过程产生新的聚合物材料。通过这个过程，烯丙基甲硅烷基官能化的二茂铁部分被整合到通过硫原子链和有机金属共聚单体之间形成共价C-S键而结构化的固体基质中。通过元素分析、TXRF、ATR-IR、固态NMR、XPS和SEM对所得非晶材料的结构和组成进行了评估。值得注意的是，当掺入多硫化物材料中时，二茂铁片段的电化学活性得以保留。因此，1是第一个用作共聚单体来开发氧化还原响应性多硫化物材料的含硅和二茂铁分子。此外，硫原子与水溶液中存在的Cd( II )或Hg( II )金属中心的相互作用导致二茂铁部分的电化学信号的调节。因此，这项工作提出了多硫链和二茂铁片段的协同组合，从而对污染的氢资源中常见的有害金属中心进行电化学识别。