Synthesis of Poly(silyl ethers) via Iridium-Catalyzed Dehydrocoupling Polymerization
| Autor: | Lei Shi, Xiao-Yong Zhai, Yong-Gui Zhou, Shu-Bo Hu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Silylation 010405 organic chemistry Ligand Organic Chemistry chemistry.chemical_element Polymer 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Polymerization Polymer chemistry Thermal stability Iridium Physical and Theoretical Chemistry |
| Zdroj: | Organometallics. 37:2342-2347 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/acs.organomet.8b00316 |
| Popis: | 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 (Mn) up to 9.27 × 104 were obtained. The PSEs possess good thermal stability and low glass-transition temperature (Tg = −42 to −83 °C). |
| Databáze: | OpenAIRE |
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