Publication

Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity

Mathwig, K. & Sojic, N., Apr-2019, In : Journal of analysis and testing. 3, 2, p. 160-165 6 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Mathwig, K., & Sojic, N. (2019). Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity. Journal of analysis and testing, 3(2), 160-165. https://doi.org/10.1007/s41664-019-00094-z

Author

Mathwig, Klaus ; Sojic, Neso. / Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity. In: Journal of analysis and testing. 2019 ; Vol. 3, No. 2. pp. 160-165.

Harvard

Mathwig, K & Sojic, N 2019, 'Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity', Journal of analysis and testing, vol. 3, no. 2, pp. 160-165. https://doi.org/10.1007/s41664-019-00094-z

Standard

Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity. / Mathwig, Klaus; Sojic, Neso.

In: Journal of analysis and testing, Vol. 3, No. 2, 04.2019, p. 160-165.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Mathwig K, Sojic N. Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity. Journal of analysis and testing. 2019 Apr;3(2):160-165. https://doi.org/10.1007/s41664-019-00094-z


BibTeX

@article{da9702e2309240f0aef8e3569ebc9a42,
title = "Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity",
abstract = "In ion-annihilation electrochemiluminescence (ECL), luminophore ions are generated by oxidation as well as reduction at electrodes surfaces, and subsequently recombine into an electronically excited state, which emits light. The intensity of the emitted light is often limited by the kinetic rate of recombination of the luminophore ion species. Recombination or annihilation rates are high ranging up to approximately 10(10) M-1 s(-1) and can be difficult to determine using scanning electrochemical microscopy or high-frequency oscillations of an electrode potential. Here, we propose determining annihilation kinetics by measuring the relative change of the emitted light intensity as a function of luminophore concentration. Using finite element simulations of annihilation ECL in a geometry of two closely spaced electrodes biased at constant potentials, we show that, with increasing concentrations, luminescence intensity crosses over from a quadratic dependence on concentration to a linear regime-depending on the rate of annihilation. Our numerical results are applicable to scanning electrochemical microscopy as well as nanofluidic electrochemical devices to determine fast ion-annihilation kinetics.",
keywords = "Electrogenerated chemiluminescence, Annihilation, Mechanisms, Ion-annihilation kinetics, Redox cycling, Nanogap transducer, ELECTROCHEMILUMINESCENCE, MICROSCOPY, GENERATION, DIFFUSION",
author = "Klaus Mathwig and Neso Sojic",
year = "2019",
month = "4",
doi = "10.1007/s41664-019-00094-z",
language = "English",
volume = "3",
pages = "160--165",
journal = "Journal of analysis and testing",
issn = "2096-241X",
publisher = "SPRINGER SINGAPORE PTE LTD",
number = "2",

}

RIS

TY - JOUR

T1 - Towards Determining Kinetics of Annihilation Electrogenerated Chemiluminescence by Concentration-Dependent Luminescent Intensity

AU - Mathwig, Klaus

AU - Sojic, Neso

PY - 2019/4

Y1 - 2019/4

N2 - In ion-annihilation electrochemiluminescence (ECL), luminophore ions are generated by oxidation as well as reduction at electrodes surfaces, and subsequently recombine into an electronically excited state, which emits light. The intensity of the emitted light is often limited by the kinetic rate of recombination of the luminophore ion species. Recombination or annihilation rates are high ranging up to approximately 10(10) M-1 s(-1) and can be difficult to determine using scanning electrochemical microscopy or high-frequency oscillations of an electrode potential. Here, we propose determining annihilation kinetics by measuring the relative change of the emitted light intensity as a function of luminophore concentration. Using finite element simulations of annihilation ECL in a geometry of two closely spaced electrodes biased at constant potentials, we show that, with increasing concentrations, luminescence intensity crosses over from a quadratic dependence on concentration to a linear regime-depending on the rate of annihilation. Our numerical results are applicable to scanning electrochemical microscopy as well as nanofluidic electrochemical devices to determine fast ion-annihilation kinetics.

AB - In ion-annihilation electrochemiluminescence (ECL), luminophore ions are generated by oxidation as well as reduction at electrodes surfaces, and subsequently recombine into an electronically excited state, which emits light. The intensity of the emitted light is often limited by the kinetic rate of recombination of the luminophore ion species. Recombination or annihilation rates are high ranging up to approximately 10(10) M-1 s(-1) and can be difficult to determine using scanning electrochemical microscopy or high-frequency oscillations of an electrode potential. Here, we propose determining annihilation kinetics by measuring the relative change of the emitted light intensity as a function of luminophore concentration. Using finite element simulations of annihilation ECL in a geometry of two closely spaced electrodes biased at constant potentials, we show that, with increasing concentrations, luminescence intensity crosses over from a quadratic dependence on concentration to a linear regime-depending on the rate of annihilation. Our numerical results are applicable to scanning electrochemical microscopy as well as nanofluidic electrochemical devices to determine fast ion-annihilation kinetics.

KW - Electrogenerated chemiluminescence

KW - Annihilation

KW - Mechanisms

KW - Ion-annihilation kinetics

KW - Redox cycling

KW - Nanogap transducer

KW - ELECTROCHEMILUMINESCENCE

KW - MICROSCOPY

KW - GENERATION

KW - DIFFUSION

U2 - 10.1007/s41664-019-00094-z

DO - 10.1007/s41664-019-00094-z

M3 - Article

VL - 3

SP - 160

EP - 165

JO - Journal of analysis and testing

JF - Journal of analysis and testing

SN - 2096-241X

IS - 2

ER -

ID: 90820190