On the phosphorescence of 1H-phenalen-1-one

Cristina Flors, Santi Nonell

Research output: Indexed journal article Articlepeer-review

40 Citations (Scopus)


Combining the effects of heavy atom and low temperature, the phosphorescence spectrum from 1H-phenalen-1-one has been unveiled. The 0-0 band is located at 649 nm in methylcyclohexane and shifted to 646 nm in ethanol, which sets the triplet-energy level to 185 and 186 kJ·mol-1, respectively. The emission is unambiguously identified as phosphorescence originating from 1H-phenalen-1-one through complementary transient absorption and emission studies. The quantum yield for triplet formation is confirmed to be unity.

Original languageEnglish
Pages (from-to)2533-2539
Number of pages7
JournalHelvetica Chimica Acta
Issue number9
Publication statusPublished - 2001


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