Excited-State Intramolecular Proton Transfer of the Natural Product Quercetin

Ron Simkovitch, Dan Huppert*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Intramolecular proton-transfer dynamics in the lowest excited state (ESIHT) were studied in the natural product quercetin. We found that in all seven solvents used in this study, the ESIHT rate is ultrafast. We estimate that the ESIHT rate is about 70 fs or less. We found that in deuterated protic solvents, such as methanol-d or ethanol-d, the ESIHT rate is slower and the proton-transfer time constant is about 110 fs. The tautomeric form fluorescence quantum yield of quercetin is very low, of the order of the normal form.

Original languageEnglish
Pages (from-to)10244-10251
Number of pages8
JournalJournal of Physical Chemistry B
Volume119
Issue number32
DOIs
StatePublished - 13 Aug 2015

Funding

FundersFunder number
Israel Science Foundation

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