QUANTITATIVE TREATMENT OF THE SOLVENT EFFECTS ON THE ELECTRONIC ABSORPTION AND FLUORESCENCE-SPECTRA OF ACRIDINES AND PHENAZINES - THE GROUND AND FIRST EXCITED SINGLET-STATE DIPOLE-MOMENTS
Aaron, JJ; Maafi, M; Parkanyi, C; Boniface, C
| HERO ID | 1195324 |
|---|---|
| In Press | No |
| Year | 1995 |
| Title | QUANTITATIVE TREATMENT OF THE SOLVENT EFFECTS ON THE ELECTRONIC ABSORPTION AND FLUORESCENCE-SPECTRA OF ACRIDINES AND PHENAZINES - THE GROUND AND FIRST EXCITED SINGLET-STATE DIPOLE-MOMENTS |
| Authors | Aaron, JJ; Maafi, M; Parkanyi, C; Boniface, C |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Volume | 51 |
| Issue | 4 |
| Page Numbers | 603-615 |
| Abstract | Electronic absorption and fluorescence excitation and emission spectra of four acridines (acridine, Acridine Yellow, 9-aminoacridine and proflavine) and three phenazines (phenazine, neutral Red and safranine) are determined at room temperature (298 K) in several solvents of various polarities (dioxane, chloroform, ethyl ether, ethyl acetate, 1-butanol, 2-propanol, ethanol, methanol, dimethylformamide, acetonitrile and dimethyl sulfoxide). The effect of the solvent upon the spectral characteristics of the above compounds, is studied. In combination with the ground-state dipole moments of these compounds, the spectral data are used to evaluate their first excited singlet-state dipole moments by means of the solvatochromic shift method (Bakhshiev's and Kawski-Chamma-Viallet's correlations). The theoretical ground and excited singlet-stare dipole moments for acridines and phenazines are also calculated as a vector sum of the pi-component (obtained by the PPP method) and the sigma-component (obtained from sigma-bond moments). For most acridines and phenazines under study, the experimental excited singlet-state dipole moments are found to be higher than their ground state counterpart. The application of the Kamlet-Abboud-Taft solvatochromic parameters to the solvent effect on spectral properties of acridine and phenazine derivatives is discussed.< |
| Doi | 10.1016/0584-8539(94)00164-7 |
| Wosid | WOS:A1995QX24700012 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science A1995QX24700012 |
| Is Public | Yes |
| Is Qa | No |