The complete UV–visible photoluminescence spectrum of aqueous Ce(III)

In previous work, it has been shown that the Ce-ion catalyzed Belousov–Zhabotinsky reaction exhibits oscillatory photoluminescence. Unfortunately, Ce(III) photoluminescence measurements were performed at a second-order peak. In this Letter, the complete 3-dimensional fluorescence spectrum of Ce(III) is shown including the correct (oscillatory) first-order peak with an intensity 100–700 times higher than the second-order peaks.