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Editorial |
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| Authors: | Peter A Tanner |
| Institution: | 1. Department of Medical Chemistry, Biochemistry and Clinical Biochemistry , Faculty of Medicine, Pavol Jozef Safarik University in Ko?ice , Ko?ice , Slovakia vladimira.tomeckova@upjs.sk;3. Department of Medical Chemistry, Biochemistry and Clinical Biochemistry , Faculty of Medicine, Pavol Jozef Safarik University in Ko?ice , Ko?ice , Slovakia;4. Department of Physics , Rajdhani College, Delhi University , New Delhi , India;5. Institute of Pharmaceutical Chemistry, Faculty of Medicine, University of Pécs , Pécs , Hungary |
| Abstract: | The solvent effects on the electronic absorption and emission fluorescence spectra for a series of chalcone cyclic analogues were studied. The singlet-state excited dipole moments and the ground state dipole moments of the cyclic chalcone analogues E-2- benzylidene-1-benzosuberone E-2-(4′-methoxybenzylidene)-1-benzosuberone E-2-(4′-dimethylaminobenzylidene)-1-benzosuberone were calculated by using solvatochromic shift method by means of equations using the variations of Stokes’ shift with the solvent's dielectric constant and refractive index values. It was found that the excited state dipole moments calculated by the solvatochromic shift method were greater than the ground state dipole moments indicating a substantial redistribution of the pi-electron densities in a more polar excited state for each derivative. |
| Keywords: | cyclic chalcone analogues ground state and excited state dipole moments solvatochromic shift method |