: Positional substitution effect of methoxy groups on excited state dipole moments of cinnamoyl α-pyrones derivatives
: Nadjib Benosmane, Baya Boutemeur, Safouane M. Hamdi, Maamar Hamdi
: Volume 5 (2018)
: The effect of the position of methoxy groups in benzene ring on the ground and excited state dipole moments of cinnamoyl α-pyrones derivatives has been studied using solvatochromic shift methods. We have used Bakhshiev and Kawski-Chamma-Viallet equations to estimate the excited state dipole moment of cinnamoyl -pyrones derivatives (1B) and (2B). This study demonstrates that both grounds, as well as excited state dipole moment for 2B, are slightly higher than those for 1B, this observation can be explicated by the intermolecular charge transfer processes. The effect of solute-solvent interaction on excited state dipole moments and solvents effect has been discussed.