Ultraweak emission of the Eu(III) ions in cathodic generated electrochemiluminescence

Staniński, Krzysztof; Lis, Stefan

doi:10.1016/j.optmat.2011.03.019

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…According to the experimental results, the possible mechanism of the present ECL system was described as follows: ,, as the electrode was scanned from −2.0 to 0 V, it was easy to reduce Eu 3+ ions to Eu 2+ (eq ). Meanwhile, with enough negative potential, S 2 O 8 2– was reduced to SO 4 •– and SO 4 2– (eq ).…”

Section: Results and Discussionmentioning

confidence: 99%

Application of Europium Multiwalled Carbon Nanotubes as Novel Luminophores in an Electrochemiluminescent Aptasensor for Thrombin Using Multiple Amplification Strategies

Xin

Pang

et al. 2015

ACS Appl. Mater. Interfaces

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A novel electrochemiluminescent (ECL) aptasensor was proposed for the determination of thrombin (TB) using exonuclease-catalyzed target recycling and hybridization chain reaction (HCR) to amplify the signal. The capture probe was immobilized on an Au-GS-modified electrode through a Au-S bond. Subsequently, the hybrid between the capture probe and the complementary thrombin binding aptamer (TBA) was aimed at obtaining double-stranded DNA (dsDNA). The interaction between TB and its aptamer led to the dissociation of dsDNA because TB has a higher affinity to TBA than the complementary strands. In the presence of exonuclease, aptamer was selectively digested and TB could be released for target recycling. Extended dsDNA was formed through HCR of the capture probe and two hairpin DNA strands (NH2-DNA1 and NH2-DNA1). Then, numerous europium multiwalled carbon nanotubes (Eu-MWCNTs) could be introduced through amidation reaction between NH2-terminated DNA strands and carboxyl groups on the Eu-MWCNTs, resulting in an increased ECL signal. The multiple amplification strategies, including the amplification of analyte recycling and HCR, and high ECL efficiency of Eu-MWCNTs lead to a wide linear range (1.0×10(-12)-5.0×10(-9) mol/L) and a low detection limit (0.23 pmol/L). The method was applied to serum sample analysis with satisfactory results.

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Section: Results and Discussionmentioning

confidence: 99%

Application of Europium Multiwalled Carbon Nanotubes as Novel Luminophores in an Electrochemiluminescent Aptasensor for Thrombin Using Multiple Amplification Strategies

Xin

Pang

et al. 2015

ACS Appl. Mater. Interfaces

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“…Many others metal complexes were also studied as ECL luminophores [21]. These central metal ions include Os(II) [39], Tb(III) [41][42], Eu(III) [43][44], Pt(II) [44], Mo, or their combinations such as Os(II)-Ru(II) and Os(II)-Ir(III) [21]. However, Ru and Ir are the most frequently used because they have the highest ECL emission efficiency, while others have lower efficiencies.…”

Section: Other Metal Complexesmentioning

confidence: 99%

Electrogenerated Chemiluminescence for Immunoassay Applications

et al. 2021

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Electrogenerated chemiluminescence (ECL) has recently become one of the most prominent and well-established transducers for immunoassay techniques. ECL relates a luminophore concentration in solution with the emission of light triggered by an electrochemical stimulus. ECL immunoassay (ECLIA) performance depends on the parameters of its light generation, including the luminophore, the species that emit light called labels in ECLIA; co-reactants, which are added reagents that support the luminophore to undergo the excited state; electrodes, which are the place for the ECL reactions to take place; and the format of the immunoassay. This review discusses the behaviour of ECLIA parameters, the required instrumentations, and some important examples of detections based on ECLIA.

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