Triaryl(1-pyrenyl)bismuthonium salts: efficient photoinitiators for cationic polymerization of oxiranes and a vinyl ether.
Photoirradiation of triaryl(1-pyrenyl)bismuthonium salts in acetonitrile afforded triarylbismuthanes and pyrene, accompanied by the generation of protic acids. Triaryl(1-pyrenyl)bismuthonium hexafluoroantimonates have proven to behave as efficient photoinitiators for cationic polymerization of oxiranes and a vinyl ether, affording the corresponding polymers in good yields within 1 min.
Matano
Yoshihiro
Y
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, Japan. matano@scl.kyoto-u.ac.jp
Shinokura
Tomonori
T
Yoshikawa
Osamu
O
Imahori
Hiroshi
H