Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies
Yara. Hagras; Ahmed M.M. Alazaly; Dina Salah; Ayman A. Abdel-Shafi; Abdel-Samad, Hesham;
Abstract
Solvent effect on the absorption and fluorescence emission spectra of 1-naphthylamine-4-sulfonate (1NA4S) and 2-
naphthylamine-6-sulfonate (2NA6S) were investigated. Excited state fluorescence decay measurements were also measured in
different solvents. The spectral shifts are well correlated with several multiparametric relationships that predict the
participation hydrogen bonding interactions (specific) versus non-hydrogen bonding interactions (non-specific) on the
photophysical properties. Kamlet-Taft with their three parametric relationship which was then improved by Catalán by
splitting the * (dipolarity/polarizability) to parameters namely, solvent‟s polarizability) solvent‟s dipolarity, and very
recently Laurence relationships. The three-parameter relationship by Kamlet-Taft has shown that the absorption energy is
mainly controlled by specific interactions while the emission energy is controlled by the non-specific interactions. On the
other hand, Catalán‟s treatment has shown that non-specific interaction has higher contribution to the emission energy than
predicted by Kamlet-Taft treatment. Laurence‟s treatment has shown that hydrogen bonding interaction has higher
contribution than non-hydrogen bonding interactions to the emission energy for both compounds while they contribute
equally to their absorption energy.
naphthylamine-6-sulfonate (2NA6S) were investigated. Excited state fluorescence decay measurements were also measured in
different solvents. The spectral shifts are well correlated with several multiparametric relationships that predict the
participation hydrogen bonding interactions (specific) versus non-hydrogen bonding interactions (non-specific) on the
photophysical properties. Kamlet-Taft with their three parametric relationship which was then improved by Catalán by
splitting the * (dipolarity/polarizability) to parameters namely, solvent‟s polarizability) solvent‟s dipolarity, and very
recently Laurence relationships. The three-parameter relationship by Kamlet-Taft has shown that the absorption energy is
mainly controlled by specific interactions while the emission energy is controlled by the non-specific interactions. On the
other hand, Catalán‟s treatment has shown that non-specific interaction has higher contribution to the emission energy than
predicted by Kamlet-Taft treatment. Laurence‟s treatment has shown that hydrogen bonding interaction has higher
contribution than non-hydrogen bonding interactions to the emission energy for both compounds while they contribute
equally to their absorption energy.
Other data
Title | Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies | Authors | Yara. Hagras; Ahmed M.M. Alazaly ; Dina Salah; Ayman A. Abdel-Shafi; Abdel-Samad, Hesham | Keywords | solvent effect, fluorescence;intramolecular charge transfer;intramolecular proton transfer | Issue Date | 29-Jan-2022 | Publisher | National Information and Documentation Center (NIDOC) | Journal | Egyption Journal of Chemistry | Volume | 65 | Issue | 9 | Start page | 457 | End page | 465 | ISSN | 04492285 | DOI | 10.21608/EJCHEM.2022.111931.5084 | Scopus ID | 2-s2.0-85131631773 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.