Study of the novel fluorescent 4-methyl-9-(3-oxobutanoyl)-2H,8H-pyrano[2,3-f]chromene-2,8-dione derivative. Estimation of the ground- and excited-state dipole moments from a solvatochromic shift

By Ahmed Al-Kawkabani, Malika Makhloufi-Chebli, Nadjib Benosmane, Baya Boutemeur-Kheddis, Maamar Hamdi, Artur M.S. Silva

May 22, 2018

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  • Technique

  • Industry

Title

Study of the novel fluorescent 4-methyl-9-(3-oxobutanoyl)-2H,8H-pyrano[2,3-f]chromene-2,8-dione derivative. Estimation of the ground- and excited-state dipole moments from a solvatochromic shift

Author

Ahmed Al-Kawkabani, Malika Makhloufi-Chebli, Nadjib Benosmane, Baya Boutemeur-Kheddis, Maamar Hamdi, Artur M.S. Silva

Year

2017

Journal

Journal of Molecular Structure

Abstract

The optical properties of 4-methyl-9-(3-oxobutanoyl)-2H,8H-pyrano[2,3-f]chromene-2,8-dione was investigated in solvents of different polarity by employing UV–vis absorption and fluorescence spectroscopy at room temperature (298 K). A bathochromic shift is observed in absorption and fluorescence spectra of this molecule with increasing solvent polarity. Solvatochromic correlations were used to obtain the dipole moment in the ground and the first excited-state. The excited-state dipole moment was found to be larger than the ground-state dipole one.

Full Article

http://www.sciencedirect.com/science/article/pii/S0022286017307196

Instrument

FP-8200

Keywords

Fluorescence, Quantum yield, Chemical stability, Materials