Abstract
The location of heavy halogen atoms (Br and I) in fluorescein derivatives noticeably affected the performance of photoinitiated free-radical polymerization. We previously demonstrated that 2’,4’,5’,7’-tetrahalogen fluoresceins (i.e., eosin Y and erythrosine B) increased the polymerization performance in this order: fluorescein < eosin Y < erythrosine B. We, however, observed in this work that a tetrahalogen-substituted benzoic acid group in fluorescein considerably decreased the performance in this order: fluorescein > 4,5,6,7-tetrabromofluorescein > 4,5,6,7-tetraiodofluorescein. More information can be found in the Communication by Hong-In Lee, Jungkyu K. Lee et al.
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