We report metal-free B(C₆F₅)₃-catalysed hydrosilylation polymerization for alternating silylether–carbosilane copolymers. The reaction was carried out at room temperature using bis(dimethylsilyl)benzene and cyclic and aliphatic unsaturated ketones. It was found that 1,4-conjugation on the unsaturated ketone monomers is important for undergoing hydrosilylation-based polymerization on both CO and CC groups. The obtained polymers were characterized by high molecular weight (M_w = 4.23 × 10⁴, PDI = 2.0), tunable T_g (ranging from −7 to 27 °C) and good thermal stability (above 280 °C). Hydrolysis of silylether linkages with an HCl catalyst was demonstrated, revealing an alternating arrangement, which was supported by monitoring the polymerization processes with ¹H NMR measurements.

中文翻译：

---

使用不饱和酮无金属合成交替硅醚-碳硅烷共聚物

我们报道了无金属 B(C ₆ F ₅ ) ₃催化硅氢加成交替硅醚-碳硅烷共聚物的聚合。使用双(二甲基甲硅烷基)苯以及环状和脂族不饱和酮在室温下进行反应。研究发现，不饱和酮单体上的 1,4- 共轭对于在 CO和 C C 基团上进行基于氢化硅烷化的聚合非常重要。所得聚合物具有高分子量（M _w = 4.23 × 10 ⁴，PDI = 2.0）、可调的T _g（范围为-7至27 °C）和良好的热稳定性（高于280 °C）。证明了甲硅烷基醚键与 HCl 催化剂的水解，揭示了交替排列，这通过¹ H NMR 测量监测聚合过程得到了支持。