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Silicone polymers can be seen everywhere in life, such as frequently used silicone rubber, coatings, silicone adhesives, and silicone oils
In addition to small molecule reactions, the hydrosilation reaction has been applied to the synthesis of polymer materials since 1950, using platinum-based and rare-earth metal-based catalysts (Figure 1B)
Hydrogen atom transfer (HAT) of hydrogen-containing silanes is an effective way to generate silicon-based free radicals, but usually under heating conditions, peroxides are decomposed into free radicals to take up hydrogen atoms
Figure 1.
The organic photocatalyst (4CzIPN) and the thiol polarity reversal agent selectively activate the Si-H bond, realizing the gradual growth of the electron-rich diene and bis(silane) hydrosilation polymerization
Figure 2.
Under the combined action of 4CzIPN and the highly electrophilic acetylcridine (HAT 2), the hydrosilation polymerization and self-polymerization of the electron-deficient diene occur simultaneously, and the concentration of the electron-deficient diene, bis(silane) and The ratio of diene can change the ratio of these two polymerizations (Figure 3)
Figure 3.
Related work is currently published on J.
