Electrochemiluminescence reaction pathways in nanofluidic devices
Autor: | Klaus Mathwig, Neso Sojic, Liza Rassaei, Hanan Al-Kutubi, Silvia Voci |
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Přispěvatelé: | Pharmaceutical Analysis, Medicinal Chemistry and Bioanalysis (MCB) |
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Materials science
business.industry 010401 analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Biochemistry Chemical reaction 0104 chemical sciences Analytical Chemistry Finite element simulation Electrode Optoelectronics Electrochemiluminescence Light emission 0210 nano-technology business Luminescence |
Zdroj: | Analytical and Bioanalytical Chemistry, 412(17), 4067-4075. SPRINGER HEIDELBERG |
ISSN: | 1618-2642 |
Popis: | Nanofluidic electrochemical devices confine the volume of chemical reactions to femtoliters. When employed for light generation by electrochemiluminescence (ECL), nanofluidic confinement yields enhanced intensity and robust luminescence. Here, we investigate different ECL pathways, namely coreactant and annihilation ECL in a single nanochannel and compare light emission profiles. By high-resolution imaging of electrode areas, we show that different reaction schemes produce very different emission profiles in the unique confined geometry of a nanochannel. The confrontation of experimental results with finite element simulation gives further insight into the exact reaction ECL pathways. We find that emission strongly depends on depletion, geometric exclusion, and recycling of reactants in the nanofluidic device. |
Databáze: | OpenAIRE |
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