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.
|Number of pages||6|
|Journal||Journal of Electron Spectroscopy and Related Phenomena|
|Publication status||Published - Apr 2012|
Kovac, B., Kazazic, S., Biliskov, N., Klasinc, L., & Novak, I. (2012). Photoelectron Spectroscopy of Natural Products: Hydroxy-Flavones and Naringenin. Journal of Electron Spectroscopy and Related Phenomena, 185(3-4), 71-76. https://doi.org/10.1016/j.elspec.2012.02.003