Fluorescence Quenching of Two Coumarin-3-carboxylic Acids by Trivalent Lanthanide Ions
| Autor: | Jean-Jacques Aaron, Abdoulaye Djandé, Jean-Claude Brochon, Alphonse Tine, Lamine Cisse, Martine Capo-Chichi, Adama Saba, Serguei Sanouski, François Delattre |
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| Přispěvatelé: | Laboratoire Géomatériaux et Environnement (LGE), Université Paris-Est Marne-la-Vallée (UPEM), Electronique, Systèmes de communication et Microsystèmes (ESYCOM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Université Paris-Est Marne-la-Vallée (UPEM)-ESIEE Paris, Laboratoire de Biologie et de Pharmacologie Appliquée (LBPA), École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Université Paris-Est Marne-la-Vallée (UPEM)-ESIEE Paris |
| Rok vydání: | 2016 |
| Předmět: |
Lanthanide
Quenching (fluorescence) Sociology and Political Science 010405 organic chemistry Chemistry Clinical Biochemistry 010402 general chemistry Photochemistry Coumarin 01 natural sciences Biochemistry Fluorescence Fluorescence spectra 0104 chemical sciences Ion Clinical Psychology chemistry.chemical_compound [CHIM]Chemical Sciences Carboxylate Absorption (chemistry) Law ComputingMilieux_MISCELLANEOUS Spectroscopy Social Sciences (miscellaneous) |
| Zdroj: | Journal of Fluorescence Journal of Fluorescence, Springer Verlag, 2017, 27, pp.619-628. ⟨10.1007/s10895-016-1990-1⟩ |
| ISSN: | 1573-4994 1053-0509 |
| Popis: | The effects of various trivalent lanthanide ions (acetates of Ce3+, Er3+, Eu3+, Nd3+) on the electronic absorption and fluorescence spectra of un-substituted coumarin-3-carboxylic acid (CCA) and 7-N,N-diethylamino-coumarin-3-carboxylic acid (DECCA) have been investigated in dimethylsulfoxide (DMSO) at room temperature. Depending on the lanthanide ion nature and concentration, significant spectral changes of absorption bands occurred for both coumarin derivatives. These spectral changes were attributed to the formation of ground-state complexes between the coumarin carboxylate derivatives and lanthanide ions. The fluorescence quenching of CCA and DECCA upon increasing the lanthanide ion concentration was studied. Different quantitative treatments, including the Stern-Volmer equation, the Perrin equation and a polynomial equation, were applied and compared in order to determine the nature of the quenching mechanisms for both coumarin derivatives. The results suggested the contribution of both dynamic and static quenching. Significant differences of CCA and DECCA fluorescence quenching efficiency were also observed, depending on the lanthanide ion. DECCA fluorescence lifetime measurements, performed in the absence and in the presence of Ln3+, confirmed a contribution of static quenching. |
| Databáze: | OpenAIRE |
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