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Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF
The crystal structure of the new polymorphic form of 3-aminoflavone (3-AF) has been determined by single crystal X-ray diffraction. This report presents results of fluorimetric studies on 3-AF in methanol and aquatic solvents. Based on 3D fluorescence emission spectra, optimal values for excitation...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6719987/ https://www.ncbi.nlm.nih.gov/pubmed/31412581 http://dx.doi.org/10.3390/molecules24162927 |
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author | Pająk, Wojciech Fabijańska, Małgorzata Wojciechowski, Jakub Wolf, Wojciech M. Kilanowicz, Anna Brzezińska, Elżbieta Ochocki, Justyn |
author_facet | Pająk, Wojciech Fabijańska, Małgorzata Wojciechowski, Jakub Wolf, Wojciech M. Kilanowicz, Anna Brzezińska, Elżbieta Ochocki, Justyn |
author_sort | Pająk, Wojciech |
collection | PubMed |
description | The crystal structure of the new polymorphic form of 3-aminoflavone (3-AF) has been determined by single crystal X-ray diffraction. This report presents results of fluorimetric studies on 3-AF in methanol and aquatic solvents. Based on 3D fluorescence emission spectra, optimal values for excitation (λ(ex)) and emission/analytical (λ(em)) wavelength, the analytical concentration range as well as the range of concentration quenching for the studied compound were established. Moreover, the limit of detection (LOD) and the limit of quantification (LOQ) were determined. The results were compared with those obtained using the standard UV-Vis absorption spectrophotometric method. The effect of acidity (pH) and the concentration of halide anions (chlorides, bromides, iodides and fluorides) on fluorescence quenching were analysed. |
format | Online Article Text |
id | pubmed-6719987 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-67199872019-09-10 Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF Pająk, Wojciech Fabijańska, Małgorzata Wojciechowski, Jakub Wolf, Wojciech M. Kilanowicz, Anna Brzezińska, Elżbieta Ochocki, Justyn Molecules Article The crystal structure of the new polymorphic form of 3-aminoflavone (3-AF) has been determined by single crystal X-ray diffraction. This report presents results of fluorimetric studies on 3-AF in methanol and aquatic solvents. Based on 3D fluorescence emission spectra, optimal values for excitation (λ(ex)) and emission/analytical (λ(em)) wavelength, the analytical concentration range as well as the range of concentration quenching for the studied compound were established. Moreover, the limit of detection (LOD) and the limit of quantification (LOQ) were determined. The results were compared with those obtained using the standard UV-Vis absorption spectrophotometric method. The effect of acidity (pH) and the concentration of halide anions (chlorides, bromides, iodides and fluorides) on fluorescence quenching were analysed. MDPI 2019-08-13 /pmc/articles/PMC6719987/ /pubmed/31412581 http://dx.doi.org/10.3390/molecules24162927 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pająk, Wojciech Fabijańska, Małgorzata Wojciechowski, Jakub Wolf, Wojciech M. Kilanowicz, Anna Brzezińska, Elżbieta Ochocki, Justyn Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title | Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title_full | Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title_fullStr | Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title_full_unstemmed | Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title_short | Fluorimetric Properties of 3-Aminoflavone Biomolecule (3-AF). X-ray Crystal Structure of New Polymorph of 3-AF |
title_sort | fluorimetric properties of 3-aminoflavone biomolecule (3-af). x-ray crystal structure of new polymorph of 3-af |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6719987/ https://www.ncbi.nlm.nih.gov/pubmed/31412581 http://dx.doi.org/10.3390/molecules24162927 |
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