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Tytuł:
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Absolute Electrochemiluminescence Efficiency Quantification Strategy Exemplified with Ru(bpy) 3 in the Annihilation Pathway.
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Autorzy:
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Adsetts JR; Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada.
Chu K; Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada.
Hesari M; Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada.
Ma J; Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada.
Ding Z; Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada.
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Źródło:
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Analytical chemistry [Anal Chem] 2021 Aug 24; Vol. 93 (33), pp. 11626-11633. Date of Electronic Publication: 2021 Aug 13.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Original Publication: Washington, American Chemical Society.
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MeSH Terms:
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Luminescent Measurements*
Silicon Dioxide*
Electrodes ; Humans ; Silicon
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Substance Nomenclature:
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7631-86-9 (Silicon Dioxide)
Z4152N8IUI (Silicon)
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Entry Date(s):
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Date Created: 20210813 Date Completed: 20210910 Latest Revision: 20210910
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Update Code:
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20240105
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DOI:
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10.1021/acs.analchem.1c02403
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PMID:
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34387457
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This work presents a thorough guide to procedures for absolute electrochemiluminescence (ECL) quantum efficiency (Φ ECL ) measurements, which if employed effectively should raise the research impact of ECL studies for any luminophore. Absolute measurements are not currently employed in ECL research. Instead, ECL efficiencies have been determined relative to Ru(bpy) 3 2+ under similar conditions, regardless of whether the conditions are favorable for Ru(bpy) 3 2+ emissions or not. In fact, the most cited Ru(bpy) 3 2+ Φ ECL is from the pioneering work by the Bard research group in 1973 by means of a rotating ring-disk electrode revolving at 52 rotations per second measured with a silicon photodiode. Our presented technique uses a common disk electrode, spectrometer, and photomultiplier tube to measure the Φ ECL . The more common light detection hardware and electrodes combined with an in-depth calculation walkthrough will provide ECL researchers the necessary tools to implement Φ ECL measurement procedures in their own laboratories. Following a facile instrument setup and calculation, a systematic study of Ru(bpy) 3 2+ Φ ECL finds comparable results to those performed by Bard and co-workers.
