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

Published on 2018-07-11T21:03:32Z (GMT) by
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 (<i>M</i><sub>n</sub>) up to 9.27 × 10<sup>4</sup> were obtained. The PSEs possess good thermal stability and low glass-transition temperature (<i>T</i><sub>g</sub> = −42 to −83 °C).

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Zhai, Xiao-Yong; Hu, Shu-Bo; Shi, Lei; Zhou, Yong-Gui (2018): Synthesis of Poly(silyl ethers) via Iridium-Catalyzed

Dehydrocoupling Polymerization. ACS Publications. Collection.