Title of article :
Anionic polymerization of 2-(N-carbazolyl)ethyl methacrylate
Cho، نويسنده , , Young Sun and Lee، نويسنده , , Jae-Suk and Cho، نويسنده , , Gyoujin and Wada، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2002
The homopolymer, poly(CzMA), with controlled molecular weight (MW) and narrow molecular weight distributions (MWD) was successfully synthesized by using (1,1,4,4-tetraphenylbutanediyl)dipotassium and diethylzinc (Et2Zn) in THF at various temperatures, 25, −45, and −78 °C, under high vacuum conditions. The Et2Zn acted both as a protective group through the formation of coordination with ester enolate anion and as a scavenger to remove impurities. Block copolymers, poly(CzMA-b-styrene-b-CzMA) and poly(MMA-b-CzMA-b-MMA), with narrow MWD were also successfully synthesized by sequential anionic living polymerization.
anionic polymerization , CzMA , Diethylzinc