Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies
Hagras, Y., Alazaly, A., Salah, D., Abdel-Samad, H., Abdel-Shafi, A. (2022). Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies. EKB Journal Management System, 65(9), 457-465. doi: 10.21608/ejchem.2022.111931.5084
Yara Hagras; Ahmed Alazaly; Dina Salah; Hesham Samir Abdel-Samad; Ayman Abdel-Shafi. "Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies". EKB Journal Management System, 65, 9, 2022, 457-465. doi: 10.21608/ejchem.2022.111931.5084
Hagras, Y., Alazaly, A., Salah, D., Abdel-Samad, H., Abdel-Shafi, A. (2022). 'Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies', EKB Journal Management System, 65(9), pp. 457-465. doi: 10.21608/ejchem.2022.111931.5084
Hagras, Y., Alazaly, A., Salah, D., Abdel-Samad, H., Abdel-Shafi, A. Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies. EKB Journal Management System, 2022; 65(9): 457-465. doi: 10.21608/ejchem.2022.111931.5084

Solvent Effect on the Excited Charge Transfer State of Naphthylamine Sulfonate Derivatives: Steady State and Time resolved studies

Egyptian Journal of Chemistry
Article 44, Volume 65, Issue 9, September 2022, Page 457-465  XML PDF (1.23 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2022.111931.5084
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Authors
Yara Hagras1; Ahmed Alazaly2; Dina Salah3; Hesham Samir Abdel-Samadorcid 4; Ayman Abdel-Shafi email orcid 1
1Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, 11566 Cairo, Egypt
2Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
3Physics department, Faculty of Science, Ain Shams University, Cairo, Egypt
4Chemistry Department, Faculty of Science, Ain shams University, Cairo, Egypt
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.
Keywords
Sovatochromism; Fluorescence emission; Excited state lifetime; Intramolecular charge transfer
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