Silicon-based alternating copolymers

Anthracene fused norbornadiene derivatives Silicon-based alternating copolymers containing carbazole and oxadiazole moieties... 

Palladium-catalyzed direct synthesis, photophysical properties, and tunable electroluminescence of novel silicon-based alternating copolymers. Macromolecules 33 9277-9288. 

Synthesis, Photophysical Property, and Electroluminescent Applications of Silicon-Based Alternating Copolymers... 

Table 1. Summary of polymerization results, thermal and photophysical properties of silicon-based alternating copolymers.

Another, as yet minimally investigated, topic is that of alternated silicon-based copolymer production, using dimethylsiloxy and silazane [196] or silane [197] units, where future interest will surely lie in ceramics or optical activity, respectively. 

Using a wide range of monomer feed ratios, the molar fraction of MA in the dimethyldivinylsilane copolymers was equal to a 2 1 ratio. The maximum rate of copolymerization was observed for a 2 1 molar excess of MA. In contrast to the trimethylvinylsilane copolymers, the dimethyldivinylsilane copolymers precipitated as formed from benzene. However, isolated polymer was soluble in polar solvents. The absence of double bonds, based on IR and NMR studies, solubility, a proven 1 2 dimethyldivinylsilane MA copolymer composition, and an average silicone content of 9.17% (theory, 9.11% for a 1 2 material) support structure 86. The structure is envisioned as developing by a bimolecular alternating inter-intramolecular copolymerization mechanism. 

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