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Ratiometric fluorescence probe based on monochromati...
Turn-On Fluorescence Sensing of Oxygen with Dend...
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Indium tin oxide bipolar electrodes modified with Pt nanoparticles encapsulated inside dendrimers as sensitive electrochemiluminescence platforms
| Journal | Journal of Electroanalytical Chemistry |
|---|---|
| Author | Jihun Woo, Jiwoong Kim, Joohoon Kim |
| Citation | Journal of Electroanalytical Chemistry, 2022, Volume 906, 1572-6657 |
| DOI | https://doi.org/10.1016/j.jelechem.2021.115998 |
Here, we report highly enhanced electrochemiluminescence (ECL) from a closed bipolar electrode (BPE) system consisting of an indium tin oxide (ITO) microband BPE whose both poles were modified with catalytic Pt nanoparticles encapsulated inside dendrimers. The closed BPE-based ECL sensing system generated sensitive and stable ECL emission under a mild driving voltage owing to simultaneous catalysis of both anodic ECL and cathodic sensing reactions on the reporting pole and the detecting pole of the dual-modified ITO microband BPE, respectively. We demonstrated much amplified ECL of Ru(bpy)32+/tripropylamine with the closed BPE-based ECL systems having the dual-modified ITO BPEs; specifically, ∼4 times higher sensitivity than that of the ECL systems having unmodified ITO BPEs for bipolar ECL imaging analysis of H2O2 as a model marker of metabolism. In addition, the closed BPE-based ECL systems exhibited stable and steady ECL emission even upon 50 consecutive applications of a driving voltage of 2.3 V for robust and extended bipolar ECL imaging analysis of H2O2.
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Indium tin oxide bipolar electrodes modified with Pt nanoparticles encapsulated inside dendrimers as sensitive electrochemiluminescence platforms
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Turn-On Fluorescence Sensing of Oxygen with Dendrimer-Encapsulated Platinum Nanoparticles as Tunable Oxidase Mimics for Spatially Resolved Measurement of Oxygen Gradient in a Human Gut-on-a-Chip
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