• Mayadevi Kalgi
• Raghavendra U P
• Mahantesha Basanagouda
• S M Hanagodimath
• Thipperudrappa J

The steady state absorption and fluorescence characteristics of newly synthesized biologically active iodinated coumarin derivative 1-(2-iodo phenoxymethyl)-benzo[f]chromen-3-one (1IPBC) is studied at room temperature in solvents of varying polarities. The effect of solvents on the photophysical properties are analyzed using Lippert–Mataga polarity function, Reichardt’s microscopic solvent polarity parameter, Kamlet’s and Catalan’s multiple linear regression approaches. It has been found that non-specific solvent effects are predominant compared to specific solvent effects. The ground state dipole moment obtained using quantum chemical calculations is used to estimate excited state dipole moment. The bathochromic shift of the emission spectra and the increase in excited state dipole moment indicate the intramolecular charge transfer (ICT) character in the emitting singlet state.

Coumarin, solvatochromic shift, dipole moment, intramolecular charge transfer

"EFFECT OF SOLVENTS ON PHOTOPHYSICAL PROPERTIES OF BIOLOGICALLY ACTIVE IODINATED 4-ARYLOXYMETHYLCOUMARIN 1IPBC", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.620-627, November-2018, Available :http://www.jetir.org/papers/JETIR1811A78.pdf

"EFFECT OF SOLVENTS ON PHOTOPHYSICAL PROPERTIES OF BIOLOGICALLY ACTIVE IODINATED 4-ARYLOXYMETHYLCOUMARIN 1IPBC", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp620-627, November-2018, Available at : http://www.jetir.org/papers/JETIR1811A78.pdf