Simultaneous Electrochemical and Emission Monitoring of Electrogenerated Chemiluminescence through Instrument Hyphenation

One of the long-standing challenges to performing electrogenerated chemiluminescence (ECL) research is the need for dedicated instrumentation or highly customized cells to achieve reproducibility. This manuscript describes an approach to designing ECL systems through the hyphenation of existing labo...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2019-02, Vol.91 (3), p.2312-2318
Main Authors: Danis, Andrew S, Gordon, Jesse B, Potts, Karlie P, Stephens, Lisa I, Perry, Samuel C, Mauzeroll, Janine
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemiluminescence
Chemistry
Computer simulation
Electrochemistry
Electrons
Emission
Finite element method
Instrumentation
Iridium
Kinetics
Laboratory equipment
Monitoring instruments
Organic chemistry
Reproducibility
Ruthenium
Ruthenium compounds
Time multiplexing
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Summary:One of the long-standing challenges to performing electrogenerated chemiluminescence (ECL) research is the need for dedicated instrumentation or highly customized cells to achieve reproducibility. This manuscript describes an approach to designing ECL systems through the hyphenation of existing laboratory instruments, which provide innate time correlation of electrochemical and emission data. This design methodology lowers the entry barrier required to obtaining reproducible ECL measurements and provides flexibility in the scope of applications. Uniquely, the simplicity of this system’s experimental interface, a spectrochemical quartz cuvette, readily enables collaboration with finite element modeling that simulates ECL occurring in the cuvette-based cell. This combination of empirical and simulation data allowed for the investigation of the intertwined kinetics behind the coreactant ECL mechanism of tris­(2,2′-bipyridine)­ruthenium­(II) (Ru­(bpy)3 2+) and tripropylamine (TPA). The complexity of the system measurable via the hyphenation methodology was further scaled though the addition of tris­[2-(4,6-difluorophenyl)­pyridinato-C2, N] iridium­(III) (Ir­(dFppy)3) and the observation of real time multiplexing.
ISSN:0003-2700
1520-6882
DOI:10.1021/acs.analchem.8b04960