Synthesis and Photoluminescence Properties of Aryloxymethyl Coumarin Dyes: An Experimental and Computational Study

Abstract:

Here in, we report the synthesis and effect of solvents on photoluminescence properties of 1-(2-Methoxy-phenoxymethyl)-benzo[f]chromen-3-one (2-MPBC) and 1-(3-Methoxy-phenoxymethyl)–benzo[f]chromen-3-one (3-MPBC) molecules through Pechmann cyclisation method. The optical properties of coumarins are studied by employing a various solvents with different polarity and refractive index. The values of ground state dipole moment is 0.71D and 0.49D for 2-MPBC and 3-MPBC respectively. It is found that the ground state dipole moments (μ_g) comparatively smaller than excited state dipole moments (μ_e) for the both molecules because of more polar in nature of the excited state. Further, on the basis of solvent polarity parameter ( ), the change in dipole moments (Δμ) is found to 052D and 0.60D for by solvatochromic shift method and 0.61D and 1.23D from theoretical calculation for 2-MPBC and 3-MPBC respectively.

• Periodical: Key Engineering Materials (Volume 962)
• Pages: 65-77
• DOI: https://doi.org/10.4028/p-qfZZt2
• Online since: October 2023
• Authors: P.K. Ingalagondi*, Omanath Patil, Sanjeev R. Inamdar, Talari Sankarappa, S.M. Hanagodimath
• Keywords: 2-MPBC, 3-MPBC, Density Functional Theory, Effect of Solvents, Solvatochromic Shift

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