Photoelectron Spectroscopy of Natural Products: Hydroxy-Flavones and Naringenin

B. Kovac, S. Kazazic, N. Biliskov, L. Klasinc, Igor Novak

Research output: Contribution to journalArticle

2 Citations (Scopus)
18 Downloads (Pure)


The electronic structures of 3- and 5-hydroxy-flavones, naringenin and 3-bromochromone have been studied by UV photoelectron spectroscopy (UPS) and high-level Green's function (GF) calculations. Our UPS data show that hydroxyl substitution strongly influences the electronic structures of flavones and flavanones which in turn influences their biological (radical scavenging or antioxidant) activity. In particular, the experimental antioxidant activity correlates with HOMO '-ionization energies.
Original languageEnglish
Pages (from-to)71-76
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Issue number3-4
Publication statusPublished - Apr 2012

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