Abstract
The photoinitiation abilities of several photoinitiation systems composed of positively charged 3-ethyl-2-(p-(N,N-dimethylamino)styryl)benzothiazolium iodide (dye I) and 3-ethyl-2-(p-pyrrolidinestyryl)benzothiazolium iodide (dye II) acting as light absorbers, n-butyltriphenylborate (Bo-) anion being the electron donor, and alkoxypyridinium (AP+) cation acting as ground-state electron acceptor, are compared. Both (Bo-) and (AP+) in polymerizing formulations were present either as Bo- tetramethylammonium salt (TBAB) and AP+ tetrafluoroborate salt (APTB), respectively, or as an ion pair composed of Bo- anion and AP+ cation (AP+Bo-). The best photoinitiating ability is observed for the system in which borate anion and pyridinium cation form an ion pair. On the basis of experimental results, it is postulated that an enhancement of photoinitiation ability observed for an ion pair is caused by a specific spatial organization of the reactants allowing the secondary reactions, yielding free radicals, in three-comp...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
