Premium
Decisive Reaction Steps at Initial Stages of Photoinitiated Radical Polymerizations
Author(s) -
Griesser Markus,
Neshchadin Dmytro,
Dietliker Kurt,
Moszner Norbert,
Liska Robert,
Gescheidt Georg
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200904473
Subject(s) - photoinitiator , radical , photochemistry , chemistry , photodissociation , double bond , polymer chemistry , acrylate , oxide , polymer , organic chemistry , copolymer , monomer
The first addition of photoinitiator radicals formed by the photolysis of a bisacylphosphine oxide photoinitiator to an acrylate double bond proceeds reversibly (see scheme; R 1 = t Bu, H; R 2 =MeOC(O), BuOC(O)). Moreover, hydrogen transfer between substituted benzoyl radicals and the growing radical chain explains the formation of aldehydes in such a transformation.