F-Centre luminescence from oxide-covered aluminium cathode induced by two-step reduction of peroxydisulfate anions

Kulmala, Sakari; Ala-Kleme, Timo; Hakanen, Arvi; Haapakka, K.

doi:10.1039/a604025j

Cited by 50 publications

(38 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3) that was measured in the absence of lucigenin. IEL of oxide-coated aluminum electrode has a very broad emission band between 400 nm and 600 nm [45]. However, this cannot be the source of the ECL enhancement in the presence of lucigenin, because the changes in the IEL intensity would not be observable in the present experiment (the y-axis of Fig.…”

Section: Effect Of Oxide Film Thickness On Eclmentioning

confidence: 77%

“…4 nm) direct field-assited tunneling is predominating, i.e., electrons It is interesting to note that ECL intensity started to slightly increase when oxide film thickness exceeded 12 nm, but then again followed by continuous decrease in intensity with further increase in the oxide film thickness. The slight enhancement in ECL at about thickness of 12 nm is also displayed by the intrinsic electroluminescence (IEL) [45] of the oxide film (Fig. 3) that was measured in the absence of lucigenin.…”

Section: Effect Of Oxide Film Thickness On Eclmentioning

confidence: 99%

See 1 more Smart Citation

Cathodic electrochemiluminescence of lucigenin at disposable oxide-coated aluminum electrodes

Jiang

Håkansson

Suomi

et al. 2006

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Electrogenerated chemiluminescence (ECL) of lucigenin is induced at oxide-coated aluminum electrode in aqueous solution by cathodic pulse polarization. This ECL can be enhanced by the presence of coreactants such as peroxodisulfalte. The present method is based on the injection of hot electrons into the aqueous electrolyte solution, which probably results in the generation of hydrated electrons as reducing mediators.The successive one-electron redox reactions result in the excited states of lucigenin or its fragmentation products. The method can detect lucigenin over several orders of magnitude of concentration with detection limit below nanomolar concentration level.In addition, the relatively long lifetime of the ECL of lucigenin makes time-resolved detection possible. This study suggests that the derivatives of lucigenin can be utilized as electrochemiluminescent labels in aqueous solution in bioaffinity assays at thin insulating film-coated cathodes. The cathodic ECL reaction mechanisms are discussed.

show abstract

Section: Effect Of Oxide Film Thickness On Eclmentioning

confidence: 77%

Section: Effect Of Oxide Film Thickness On Eclmentioning

confidence: 99%

Cathodic electrochemiluminescence of lucigenin at disposable oxide-coated aluminum electrodes

Jiang

Håkansson

Suomi

et al. 2006

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

show abstract

“…Herein, we suppose that energetic electrons generated from SPCEs were attributed to the insulating film covered on the graphite particle. Such electrons would convert to hydrated electrons (e aq À ) after thermalization and salvation [2]. The resultant e aq The schematic representation of the luminescent process was also present in the Fig.…”

Section: Resultsmentioning

confidence: 99%

“…As an important branch of ECL that differs from common ECL in principle, hot electron induced cathodic ECL has also been used as an effective analytical tool. In cathodic ECL, luminescent process is initiated by hot electrons generated from a thin insulator film-covered electrode upon pulse polarization [2]. The thin insulating film plays a key role in the ECL process, making the tunnel emission of energetic electrons possible [3].…”

Section: Introductionmentioning

confidence: 99%

“…However, these electrodes can not be used in strong basic and/or acidic condition, in which such thin oxide films are quite fast dissolved [7]. Besides, the background emission at these electrodes, especially at Al/Al 2 O 3 electrode, would result in a low signal to noise (S/N) ratio [2]. A double barrier electrode of Al/Al 2 O 3 /Al/Al 2 O 3 was fabricated in order to lower the background signal [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hot Electron Induced Cathodic Electrochemiluminescence at Disposable Screen Printed Carbon Electrodes

Sun

Fang

et al. 2010

Electroanalysis

View full text Add to dashboard Cite

Hot electron induced cathodic electrochemiluminescence (ECL) was observed at screen printed carbon electrodes (SPCEs) during pulse polarization. The thin insulating film resulted from the printing inks was found to be suitable for generating hot electrons, which can further be converted to hydrated electrons and induce the subsequent luminescence. Compared with disposable Al/Al 2 O 3 electrode, SPCEs show more stable and reproducible ECL in a wider pH range without background emission. A sensitive ECL method for determination of quercetin is proposed. The detection limit is 8.0 10 À10 mol L À1(S/N=3), which is two magnitudes lower than that of common ECL method.

show abstract

ChemInform Abstract: F‐Center Luminescence from Oxide‐Covered Aluminum Cathode Induced by Two‐Step Reduction of Peroxydisulfate Anions.

et al. 1997

View full text Add to dashboard Cite

Induced by Two-Step Reduction of Peroxydisulfate Anions. -The light emission during cathodic pulse-polarization of an oxide-covered aluminum electrode in aqueous solution is considerably stronger in the presence of peroxydisulfate anions. Such electrodes show a broad maximum between 400 and 450 nm which is attributable to F-center luminescence of aluminum oxide. The mechanism of the luminescence, associated with the two-step reduction of peroxydisulfate anions near the oxide-covered cathode is discussed. F-and F+center luminescence is suggested as predominant pathway in electrogenerated luminescence at least in the presence of peroxydisulfate ions. -(KULMALA, S.; ALA-KLEME, T.; HAKANEN, A.; HAAPAKKA, K.; J.

show abstract

F-Centre luminescence from oxide-covered aluminium cathode induced by two-step reduction of peroxydisulfate anions

Cited by 50 publications

References 3 publications

Cathodic electrochemiluminescence of lucigenin at disposable oxide-coated aluminum electrodes

Cathodic electrochemiluminescence of lucigenin at disposable oxide-coated aluminum electrodes

Hot Electron Induced Cathodic Electrochemiluminescence at Disposable Screen Printed Carbon Electrodes

ChemInform Abstract: F‐Center Luminescence from Oxide‐Covered Aluminum Cathode Induced by Two‐Step Reduction of Peroxydisulfate Anions.

Contact Info

Product

Resources

About