• RAVIKANTHA M.N

In the present paper, the role of various solvatochromic parameters on the solvent induced Spectral Shifts in 3-Carbethoxy Coumarin (3CECO) is reported. The solvatochromism of 3CECO is investigated in solvents with varying polarities using Lippert’s bulk solvent polarity parameter and Reichardt’s microscopic solvent polarity scale. A double linear correlation approach is employed to rule out the interference of specific solvent effects. To get deeper insight into the specific and non-specific solute-solvent interactions, we also use multiparametric regression techniques, including Kamlet-Taft and Catalan models. The ground-state dipole moment of 3CECO is computed using DFT (Density Functional Theory), while the excited-state dipole moments are derived from solvatochromic shifts using Lippert-Mataga, Bakhshiev, and Reichardt methods.

Keywords: Coumarins, solvatochromism, dipole moments, TD-DFT, Stoke’s shifts

"Analysis of solvent induced Spectral Shifts in 3-Carbethoxy Coumarin using Solvatochromic Techniques", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 5, page no.775-784, May 2017, Available :http://www.jetir.org/papers/JETIR1705133.pdf

"Analysis of solvent induced Spectral Shifts in 3-Carbethoxy Coumarin using Solvatochromic Techniques", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 5, page no. pp775-784, May 2017, Available at : http://www.jetir.org/papers/JETIR1705133.pdf