Studies on Photophysical Properties of Mono-carbonyl Curcumin Analogues: Experimental and Theoretical approach

The solvatochromic fluorescence behaviour of mono-carbonyl curcumin analogues has been studied in ten different solvents ranging from non-polar to polar. The solvent effect on the spectral properties of analogues has been discussed. The ground state dipole moments were estimated experimentally by Bi...

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Bibliographic Details
Published in:Oriental journal of chemistry 2018-01, Vol.34 (4), p.2170-2179
Main Authors: Rayanal, Manjula, Pralhad Pujar, Prasad, D, Sridhar
Format: Article
Language:English
Subjects:
Carbonyls
Dipole moments
Fluorescence
Ground state
Molecular orbitals
Polarity
Solvent effect
Solvents
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Summary:The solvatochromic fluorescence behaviour of mono-carbonyl curcumin analogues has been studied in ten different solvents ranging from non-polar to polar. The solvent effect on the spectral properties of analogues has been discussed. The ground state dipole moments were estimated experimentally by Bilot-Kawski equation which is a function of Stokes shift with the solvent polarity parameters and Guggenheim method and theoretically by TD-DFT studies. The excited state dipole moment was determined using Bilot-Kawski equations. The excited state dipole moments for the two molecules were found to be higher than their corresponding ground state dipole moments. Theoretically Frontier molecular orbital (HOMO/ LUMO) energies were determined by Gaussian 09 W software using TD-DFT.
ISSN:0970-020X
2231-5039
DOI:10.13005/ojc/3404059