Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry

The usefulness of synchronous luminescence spectrometry (SLS) for the analysis of complex luminescence mixtures has been recently demonstrated. It has been employed In our laboratory to study the fluorescence behavior of a natural coumarln: 7-hydroxycoumarln (7HC). The SLS spectra obtained at differ...

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Autor principal: Colombano, Claudio Gabriel
Publicado: 1985
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032700_v57_n9_p1907_Colombano
http://hdl.handle.net/20.500.12110/paper_00032700_v57_n9_p1907_Colombano
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00032700_v57_n9_p1907_Colombano
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spelling paper:paper_00032700_v57_n9_p1907_Colombano2023-06-08T14:24:08Z Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry Colombano, Claudio Gabriel The usefulness of synchronous luminescence spectrometry (SLS) for the analysis of complex luminescence mixtures has been recently demonstrated. It has been employed In our laboratory to study the fluorescence behavior of a natural coumarln: 7-hydroxycoumarln (7HC). The SLS spectra obtained at different pH values have demonstrated the capability of assigning the various transitions to the equilibrium forms of the 7HC. A new band with maximum at 431 nm (exciting at 345 nm) can be assigned to the catlonlc form at H0 = -6. Comparisons are made between the expected (theoretical) [formula omitted] and the experimental values, for two values of Δλ: 20 and 65 nm. © 1985, American Chemical Society. All rights reserved. Fil:Colombano, C.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1985 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032700_v57_n9_p1907_Colombano http://hdl.handle.net/20.500.12110/paper_00032700_v57_n9_p1907_Colombano
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The usefulness of synchronous luminescence spectrometry (SLS) for the analysis of complex luminescence mixtures has been recently demonstrated. It has been employed In our laboratory to study the fluorescence behavior of a natural coumarln: 7-hydroxycoumarln (7HC). The SLS spectra obtained at different pH values have demonstrated the capability of assigning the various transitions to the equilibrium forms of the 7HC. A new band with maximum at 431 nm (exciting at 345 nm) can be assigned to the catlonlc form at H0 = -6. Comparisons are made between the expected (theoretical) [formula omitted] and the experimental values, for two values of Δλ: 20 and 65 nm. © 1985, American Chemical Society. All rights reserved.
author Colombano, Claudio Gabriel
spellingShingle Colombano, Claudio Gabriel
Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
author_facet Colombano, Claudio Gabriel
author_sort Colombano, Claudio Gabriel
title Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
title_short Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
title_full Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
title_fullStr Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
title_full_unstemmed Simultaneous Evaluation of 7-Hydroxycoumarin Excited States by Synchronous Luminescence Spectrometry
title_sort simultaneous evaluation of 7-hydroxycoumarin excited states by synchronous luminescence spectrometry
publishDate 1985
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032700_v57_n9_p1907_Colombano
http://hdl.handle.net/20.500.12110/paper_00032700_v57_n9_p1907_Colombano
work_keys_str_mv AT colombanoclaudiogabriel simultaneousevaluationof7hydroxycoumarinexcitedstatesbysynchronousluminescencespectrometry
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