Wireless electrochemiluminescence at functionalised gold microparticles using 3D titanium electrode arrays
Wireless electrochemiluminescence is generated using interdigitated, 3D printed, titanium arrays as feeder electrodes to shape the electric field. Gold microparticles (45 μm diameter), functionalised with 11-mercaptoundecanoic acid, act as micro-emitters to generate electrochemiluminescence from [Ru...
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Published in | Chemical communications (Cambridge, England) Vol. 57; no. 38; pp. 4642 - 4645 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
11.05.2021
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Subjects | |
Online Access | Get full text |
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Summary: | Wireless electrochemiluminescence is generated using interdigitated, 3D printed, titanium arrays as feeder electrodes to shape the electric field. Gold microparticles (45 μm diameter), functionalised with 11-mercaptoundecanoic acid, act as micro-emitters to generate electrochemiluminescence from [Ru(bpy)
3
]
2+
, (bpy is 2,2′-bipyridine) where the co-reactant is tripropylamine. The oxide coated titanium allows intense electric fields, whose distribution depends on the geometry of the array, to be created in the absence of deliberately added electrolyte. COMSOL modelling and long exposure ECL imaging have been used to map the electric field distribution. Significantly, we demonstrate that by controlling the surface charge of the gold microparticles through the solution pH, the light intensity can be increased by a factor of more than 10.
Wireless electrochemiluminescence is generated from functionalised gold microparticles using interdigitated, 3D printed, titanium arrays as feeder electrodes. Active transport and intense electric fields leads to bright electrochemiluminescence. |
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Bibliography: | Electronic supplementary information (ESI) available. See DOI 10.1039/d1cc01010g ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1359-7345 1364-548X |
DOI: | 10.1039/d1cc01010g |