Enhancing the antioxidant potential of ESIPT-based naringenin flavonoids based on excited state hydrogen bond dynamics: A theoretical study.
J Photochem Photobiol B
; 258: 112996, 2024 Sep.
Article
in En
| MEDLINE
| ID: mdl-39094239
ABSTRACT
Exploring antioxidant potential of flavonoid derivatives after ESIPT process provides a theoretical basis for discovering compounds with higher antioxidant capacity. In this work, employing the density functional theory (DFT) and time-dependent density functional theory (TD-DFT) methods, the antioxidant potential of two citrus-derived naringenin flavonoids after ESIPT process is explored. Based on studies of ESIPT process including IMHB intensity variations, potential energy curves, and transition state, these molecules exist only in enol and ketoâ forms due to ultra-fast ESIPT. The HOMOs are utilized to explore electron-donating capacity, demonstrating that the molecules in ketoâ form is stronger than that in enol form. Furthermore, the atomic dipole moment corrected Hirshfeld population (ADCH) and Fukui functions indicate that the sites attacked by the electrophilic free radical of the two molecules in the ketoâ form are O3 and O5' respectively, and both are more active than in the enol form. Overall, a comprehensive consideration of the ESIPT process and antioxidant potential of flavonoid derivatives will facilitate the exploration and design of substances with higher antioxidant capacity.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Flavonoids
/
Flavanones
/
Hydrogen Bonding
/
Antioxidants
Language:
En
Journal:
J Photochem Photobiol B
/
J. photochem. photobiol. B
/
Journal of photochemistry and photobiology
Journal subject:
BIOLOGIA
Year:
2024
Document type:
Article
Affiliation country:
China
Country of publication:
Switzerland