Synthesis and spectroscopic study of 2,7-diethylamino-2-oxo-2H-chromen-3-yl benzothiazole-6-sulfonyl chlorides and its derivatives
| Autor: | Salma M.Z. Al-Kindy, Stephen G. Schulman, Ahmed F. Al-Harasi, Fakhr Eldin O. Suliman, Nada A. Al-Sharji, Haider A.J. Al-Lawati |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Chemistry(all)
General Chemical Engineering Ethyl acetate Quantum yield 010402 general chemistry Photochemistry 01 natural sciences lcsh:Chemistry chemistry.chemical_compound Aniline Surfactant GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) ComputingMilieux_MISCELLANEOUS Sulfonyl chemistry.chemical_classification Aqueous solution Coumarin-6 010405 organic chemistry Chemistry Emission spectra General Chemistry Fluorescence 0104 chemical sciences Benzothiazole lcsh:QD1-999 Yield (chemistry) Chemical Engineering(all) Electronic absorption Derivatives Nuclear chemistry |
| Zdroj: | Arabian Journal of Chemistry, Vol 10, Iss S1, Pp S114-S120 (2017) |
| ISSN: | 1878-5352 |
| Popis: | 2,7-Diethylamino-2-oxo-2H-chromen-3-yl benzothiazole-6-sulfonyl chlorides dye (Coumarin 6-SO2Cl) was used to synthesize anilines and amino acid derivatives. The electronic absorption and emission spectra of the label and its derivatives in organic solvents of different polarity, micellar systems and in aqueous buffered media are investigated. The label and its derivatives exhibited more or less the same excitation and emission wavelength around 470 and 520 nm, respectively. Maximum fluorescence quantum yield for aniline derivative was observed in ethyl acetate while minimum yield was observed in water. In micellar systems, maximum quantum yield was observed in the presence of Tw-20 for the label while proline derivative gave maximum enhancement in the presence of Tw-80. The results reflect the importance of medium effect on the fluorescence intensity and molar absorptivity of the label and its derivatives. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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