Synthesis of Poly(silyl ethers) via Iridium-Catalyzed Dehydrocoupling Polymerization,Organometallics

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Synthesis of Poly(silyl ethers) via Iridium-Catalyzed Dehydrocoupling Polymerization
Organometallics ( IF 2.5 ) Pub Date : 2018-07-12 , DOI: 10.1021/acs.organomet.8b00316
Xiao-Yong Zhai _{1,

2} , Shu-Bo Hu ₁ , Lei Shi ₁ , Yong-Gui Zhou ₁

Affiliation

Poly(silyl ethers) (PSEs) are promising degradable materials, and the development of an efficient method to produce them from readily available materials is highly desirable. Herein, we present a dehydrocoupling polymerization of AB-type silyl alcohol monomers catalyzed by homogeneous iridium(I) complexes bearing a bisphosphine ligand. A series of PSEs containing aliphatic or aromatic linkers have been synthesized. The PDI of PSEs could be tuned by varying the ligand of iridium/bisphosphine complexes. Moderate to high yields of polymers with number-average molecular weights (M_n) up to 9.27 × 10⁴ were obtained. The PSEs possess good thermal stability and low glass-transition temperature (T_g = −42 to −83 °C).

中文翻译：

铱催化的脱氢偶联聚合法合成聚甲硅烷基醚

聚（甲硅烷基醚）（PSE）是有前途的可降解材料，非常需要开发一种从容易获得的材料生产它们的有效方法。在这里，我们提出了AB型甲硅烷基醇单体的脱氢偶联聚合反应，该反应是由带有双膦配体的均相铱（I）配合物催化的。已经合成了一系列含有脂族或芳族接头的PSE。可以通过改变铱/双膦配合物的配体来调节PSE的PDI。获得了中等至高产率的数均分子量（M _n）高达9.27×10 ⁴的聚合物。PSE具有良好的热稳定性和较低的玻璃化转变温度（T _g = -42至-83°C）。

更新日期：2018-07-12

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