Effect of addition of calix[n]arenes on photooxygenation of 4,5-diphenylimidaolones

摘要

Rates of dye sensitized photo-oxygenation of 4,5-diphenylimidazolones increase markedly on addition of calix[n]arenes.The effect of addition of calix[6]arenes is more pronounced than that of calxi[4]-and calix[8]arenes and it varies with the size of the alkyl group (octyl > hexyl > t-butyl > methyl >H) in the same calxiarene series.