期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 50, 页码 18202-18206出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201909806
关键词
electrochemiluminescence; biosensors; electrochemistry; plasmonics; surface plasmon resonance
资金
- Ministere des relations internationales et de la francophonie of Quebec, Canada
- Ministero degli Affari Esteri e della Cooperazione Internazionale of Italy [QU17MO06]
- Canadian Foundation for Innovation (CFI) [12910]
- Natural Science and Engineering Research Council of Canada (NSERC) [RGPIN-2016-03864]
We report the integration of surface plasmon resonance (SPR), cyclic voltammetry and electrochemiluminescence (ECL) responses to survey the interfacial adsorption and energy transfer processes involved in ECL on a plasmonic substrate. It was observed that a Tween 80/tripropylamine nonionic layer formed on the gold electrode of the SPR sensor, while enhancing the ECL emission process, affects the electron transfer process to the luminophore, Ru(bpy)(3)(2+), which in turn has an impact on the plasmon resonance. Concomitantly, the surface plasmon modulated the ECL intensity, which decreased by about 40 %, due to an interaction between the excited state of Ru(bpy)(3)(2+) and the plasmon. This occurred only when the plasmon was excited, demonstrating that the optically excited surface plasmon leads to lower plasmon-mediated luminescence and that the plasmon interacts with the excited state of Ru(bpy)(3)(2+) within a very thin layer.
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