Electrogenerated luminescence of chosen lanthanide complexes at stationary oxide-covered aluminium electrode

Staniński, Krzysztof; Lis, Stefan

doi:10.1016/j.jallcom.2007.04.171

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…The present hydrocarbons are excited in ECL conditions mainly by oxidation-initiated redox pathways. At first, the organic molecule is oxidized by hydroxyl radicals generated by reduction of dissolved oxygen (Kulmala et al 2002 ; Eskola et al 1995 ; Ala-Kleme et al 2006 ; Staninski 2010 ; Staninski and Lis 2008 ). The next step is the reduction of the oxidized molecule by “hot” or hydrated electrons, resulting in the excitation of hydrocarbons.…”

Section: Resultsmentioning

confidence: 99%

“…The electrochemical experiments carried out with the use of an aluminum electrode coated with a nanolayer of aluminum oxide indicate that this method can be successfully employed for determination of biologically active organic compounds (Kulmala et al 2002 ; Eskola et al 1995 ; Ala-Kleme et al 2006 ) as well as inorganic compounds (Staninski 2010 ; Staninski and Lis 2008 ). The aim of this study was to evaluate the usefulness of combined ECL and FL methods for determination of biodegradation kinetics of selected PAH compounds in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

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High Voltage Electrochemiluminescence (ECL) as a New Method for Detection of PAH During Screening for PAH-Degrading Microbial Consortia

Staninska

Szczepaniak

Staniński

et al. 2015

Water Air Soil Pollut

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The search for new bacterial consortia capable of removing PAH from the environment is associated with the need to employ novel, simple, and economically efficient detection methods. A fluorimetric method (FL) as well as high voltage electrochemiluminescence (ECL) on a modified surface of an aluminum electrode were used in order to determine the changes in the concentrations of PAH in the studied aqueous solutions. The ECL signal (the spectrum and emission intensity for a given wavelength) was determined with the use of an apparatus operating in single photon counting mode. The dependency of ECL and FL intensity on the concentration of naphthalene, phenanthrene, and pyrene was linear in the studied concentration range. The biodegradation kinetics of the particular PAH compounds was determined on the basis of the obtained spectroscopic determinations. It has been established that the half-life of naphthalene, phenanthrene, and pyrene at initial concentrations of 50 mg/l (beyond the solubility limit) reached 41, 75, and 130 h, accordingly. Additionally, the possibility of using ECL for rapid determination of the soluble fraction of PAH directly in the aqueous medium has been confirmed. Metagenomic analysis of the gene encoding 16S rRNA was conducted on the basis of V4 hypervariable region of the 16S rRNA gene and allowed to identify 198 species of bacteria that create the S4consortium. The consortium was dominated by Gammaproteobacteria (78.82 %), Flavobacteria (9.25 %), Betaproteobacteria (7.68 %), Sphingobacteria (3.76 %), Alphaproteobacteria (0.42 %), Clostridia (0.04 %), and Bacilli (0.03 %).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Voltage Electrochemiluminescence (ECL) as a New Method for Detection of PAH During Screening for PAH-Degrading Microbial Consortia

Staninska

Szczepaniak

Staniński

et al. 2015

Water Air Soil Pollut

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“…Eu(III) forms with the ligand of coumarin-3-carboxylic acid (C3CA) the complex of composition Eu(C3CA) 2 (NO 3 )(H 2 O) 2 . This complex is one of a few examples in which ECL characteristic for the Eu(III) ion can be observed [13,15,19]. The mechanism of excitation of the central ion can be completed as a result of energy transfer from the excited state of the ligand to the Eu(III) ion (LMET), which is predominant, and on the way of reduction and oxidation reactions of the complexed Eu(III) ion.…”

Section: Discussionmentioning

confidence: 99%

“…In our recent investigations, we have applied specific electrogenerated luminescence, ECL, which can be observed in Ln (III) (Ln = Tb, Dy and Eu) complexes with organic ligands containing aromatic rings forming stable complexes, in studying mechanisms of energy transfer [14,15]. The ECL was obtained by producing highly oxidizing and reducing species as: hydrated electrons, hydroxyl, and sulfate radicals.…”

Section: Introductionmentioning

confidence: 99%

Electrochemiluminescence Study of Europium (III) Complex with Coumarin3‐Carboxylic Acid

Lis

Staniński²,

Grzyb³

2008

International Journal of Photoenergy

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The europium (III) complex of coumarin-3-carboxylic acid (C3CA) has been prepared and characterized on the basis of elemental analysis, IR, and emission (photoluminescence and electrochemiluminescence) spectroscopy. The synthesised complex having a formula Eu(C3CA) 2 (NO 3 )(H 2 O) 2 was photophysically characterized in solution and in the solid state. Electrochemiluminescence, ECL, of the system containing the Eu(III)/C3CA complex was studied using an oxide-covered aluminium electrode. The goal of these studies was to show the possibility of the use of electrochemical excitation of the Eu(III) ion in aqueous solution for emission generation. The generated ECL emission was very weak, and therefore its measurements and spectral analysis were carried out with the use of cut-off filters method. The studies proved a predominate role of the ligand-to-metal energy transfer (LMET) in the generated ECL.

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Electrochemiluminescence of Lanthanides

Kulmala

Ala-Kleme

Suomi

2011

Lanthanide Luminescence

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Electrogenerated luminescence of chosen lanthanide complexes at stationary oxide-covered aluminium electrode

Cited by 6 publications

References 11 publications

High Voltage Electrochemiluminescence (ECL) as a New Method for Detection of PAH During Screening for PAH-Degrading Microbial Consortia

High Voltage Electrochemiluminescence (ECL) as a New Method for Detection of PAH During Screening for PAH-Degrading Microbial Consortia

Electrochemiluminescence Study of Europium (III) Complex with Coumarin3‐Carboxylic Acid

Electrochemiluminescence of Lanthanides

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