Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions

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Thermal and photochemical stability (ΦR), room temperature UV-vis absorption and fluorescence spectra, fluorescence quantum yields (ΦF) and lifetimes (τF), quantum yields of hydrogen peroxide (ΦH2O2) and singlet oxygen (ΦΔ) production, and triplet lifetimes (τT) have been obtained for the neutral an...

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Detalles Bibliográficos
Autor principal: Erra Balsells, Rosa
Publicado: 2015
Materias:
harmine
hydrogen peroxide
oxygen
solution and solubility
water
analogs and derivatives
chemical structure
chemistry
fluorescence
photochemistry
spectrofluorometry
Fluorescence
Harmine
Hydrogen Peroxide
Molecular Structure
Oxygen
Photochemical Processes
Solutions
Spectrometry, Fluorescence
Water
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v18_n2_p886_RasseSuriani
http://hdl.handle.net/20.500.12110/paper_14639076_v18_n2_p886_RasseSuriani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_14639076_v18_n2_p886_RasseSuriani
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spelling paper:paper_14639076_v18_n2_p886_RasseSuriani2023-06-08T16:16:29Z Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions Erra Balsells, Rosa harmine hydrogen peroxide oxygen solution and solubility water analogs and derivatives chemical structure chemistry fluorescence photochemistry solution and solubility spectrofluorometry Fluorescence Harmine Hydrogen Peroxide Molecular Structure Oxygen Photochemical Processes Solutions Spectrometry, Fluorescence Water Thermal and photochemical stability (ΦR), room temperature UV-vis absorption and fluorescence spectra, fluorescence quantum yields (ΦF) and lifetimes (τF), quantum yields of hydrogen peroxide (ΦH2O2) and singlet oxygen (ΦΔ) production, and triplet lifetimes (τT) have been obtained for the neutral and protonated forms of 6-chloroharmine, 8-chloroharmine and 6,8-dichloroharmine, in aqueous media. When it was possible, the effect of pH and oxygen concentration was evaluated. The nature of electronic transitions of protonated and neutral species of the three investigated chloroharmines was established using Time-Dependent Density Functional Theory (TD-DFT) calculations. The impact of all the foregoing observations on the biological role of the studied compounds is discussed. © the Owner Societies 2016. Fil:Erra-Balsells, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v18_n2_p886_RasseSuriani http://hdl.handle.net/20.500.12110/paper_14639076_v18_n2_p886_RasseSuriani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic harmine
hydrogen peroxide
oxygen
solution and solubility
water
analogs and derivatives
chemical structure
chemistry
fluorescence
photochemistry
solution and solubility
spectrofluorometry
Fluorescence
Harmine
Hydrogen Peroxide
Molecular Structure
Oxygen
Photochemical Processes
Solutions
Spectrometry, Fluorescence
Water
spellingShingle harmine
hydrogen peroxide
oxygen
solution and solubility
water
analogs and derivatives
chemical structure
chemistry
fluorescence
photochemistry
solution and solubility
spectrofluorometry
Fluorescence
Harmine
Hydrogen Peroxide
Molecular Structure
Oxygen
Photochemical Processes
Solutions
Spectrometry, Fluorescence
Water
Erra Balsells, Rosa
Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
topic_facet harmine
hydrogen peroxide
oxygen
solution and solubility
water
analogs and derivatives
chemical structure
chemistry
fluorescence
photochemistry
solution and solubility
spectrofluorometry
Fluorescence
Harmine
Hydrogen Peroxide
Molecular Structure
Oxygen
Photochemical Processes
Solutions
Spectrometry, Fluorescence
Water
description Thermal and photochemical stability (ΦR), room temperature UV-vis absorption and fluorescence spectra, fluorescence quantum yields (ΦF) and lifetimes (τF), quantum yields of hydrogen peroxide (ΦH2O2) and singlet oxygen (ΦΔ) production, and triplet lifetimes (τT) have been obtained for the neutral and protonated forms of 6-chloroharmine, 8-chloroharmine and 6,8-dichloroharmine, in aqueous media. When it was possible, the effect of pH and oxygen concentration was evaluated. The nature of electronic transitions of protonated and neutral species of the three investigated chloroharmines was established using Time-Dependent Density Functional Theory (TD-DFT) calculations. The impact of all the foregoing observations on the biological role of the studied compounds is discussed. © the Owner Societies 2016.
author Erra Balsells, Rosa
author_facet Erra Balsells, Rosa
author_sort Erra Balsells, Rosa
title Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
title_short Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
title_full Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
title_fullStr Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
title_full_unstemmed Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
title_sort chemical and photochemical properties of chloroharmine derivatives in aqueous solutions
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v18_n2_p886_RasseSuriani
http://hdl.handle.net/20.500.12110/paper_14639076_v18_n2_p886_RasseSuriani
work_keys_str_mv AT errabalsellsrosa chemicalandphotochemicalpropertiesofchloroharminederivativesinaqueoussolutions
_version_ 1768542955208966144

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