الفهرس 
Introduction and OverviewOnly 14 pages are availabe for public view
 |  | from | 138 |  |  |
| | | from | 138 | | |
Abstract
Solvent effect on the fluorescence emission absorption and spectra of 2-naphthylamine-6-sulfonate (2NA6S) and 1-naphthyl-amine-4-sulfonate (1NA4S) were investigated. Excited-state life-time measurements were also measured in a variety of solvents. The spectral shifts are well correlated with several multiparametric relationships that predict the participation of hydrogen bonding in-teractions (specific) versus non-hydrogen bonding interactions (non-specific) on the photophysical properties. Kamlet-Taft with their three parametric relationships which were then improved by Catalán by splitting the * (dipolarity/polarizability) to parameters namely, solvent’s polarizability) solvent’s dipolarity, and very re-cently Laurence relationships. Kamlet-Taft relationship has shown that the absorption energy is mainly regulated by specific interac-tions while the emission energy is monitored by the non-specific interactions. On the other hand, Catalán’s dealing has shown that
vi
non-specific communication has a higher contribution to the emis-sion energy than predicted by the Kamlet-Taft treatment. Lau-rence’s treatment has shown that hydrogen bonding interaction has a higher contribution than non-hydrogen bonding interactions to the emission energy for both compounds while they contribute equally to their absorption energy.