Ultrafast excited-state intramolecular proton transfer of aloesaponarin i

Shin Ichi Nagaoka, Hidemitsu Uno, Dan Huppert*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Time-resolved emission of aloesaponarin I was studied with the fluorescence up-conversion and time-correlated single-photon-counting techniques. The rates of the excited-state intramolecular proton transfer, of the solvent and molecular rearrangements, and of the decay from the excited proton-transferred species were determined and interpreted in the light of time-dependent density functional calculations. These results were discussed in conjunction with UV protection and singlet-oxygen quenching activity of aloe.

Original languageEnglish
Pages (from-to)4347-4353
Number of pages7
JournalJournal of Physical Chemistry B
Issue number16
StatePublished - 25 Apr 2013


FundersFunder number
Japan Society for the Promotion of Science24658123


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