Advances in electrochemiluminescence for single-cell analysis DOI
Qian Yang, Xiaoyu Huang, Beibei Gao

et al.

The Analyst, Journal Year: 2022, Volume and Issue: 148(1), P. 9 - 25

Published: Dec. 7, 2022

Recent years have witnessed the emergence of innovative analytical methods with high sensitivity and spatiotemporal resolution that allowed qualitative quantitative analysis to be carried out at single-cell subcellular levels. Electrochemiluminescence (ECL) is a unique chemiluminescence high-energy electron transfer triggered by electrical excitation. The ingenious combination electrochemistry results in distinct advantages sensitivity, wide dynamic range good reproducibility. Specifically, ECL (SCECL) excellent has emerged as promising toolbox bioanalysis for revealing individual cells' heterogeneity stochastic processes. This review focuses on advances SCECL bioimaging. history recent probes strategies system design are briefly reviewed. Subsequently, latest representative techniques bioassays, bioimaging therapeutics also highlighted. Then, current challenges future perspectives discussed.

Language: Английский

Fabrication of High-Density Vertical Closed Bipolar Electrode Arrays by Carbon Paste Filling Method for Two-Dimensional Chemical Imaging DOI
Tomoki Iwama, Kumi Y. Inoue, Hitoshi Shiku

et al.

Analytical Chemistry, Journal Year: 2022, Volume and Issue: 94(25), P. 8857 - 8866

Published: June 14, 2022

In this study, a carbon paste filling method was proposed as simple strategy for fabricating high-density bipolar electrode (BPE) arrays electrochemical microscopy (BEM). High spatiotemporal resolution imaging achieved using the fabricated BPE array. BEM, which is an emerging microscopic system in recent years, achieves label-free and high of molecular distributions electrochemiluminescence (ECL) signals. We devised to fabricate array by porous plate with succeeded (15 μm pitch). After detailed observation surface scanning electron microscope, basic ECL emission characteristics were evaluated potassium ferricyanide solution sample solution. Moreover, inflow molecules conducted evaluate ability prepared addition, Prussian Blue containing ink applied side provide catalytic activity hydrogen peroxide, quantification peroxide signals achieved. This fabrication can accelerate research development BEM. Furthermore, BEM important milestone achieving bioimaging such biomolecule enzymes.

Language: Английский

Citations

14

Electrochemiluminescence Sensor Based on CeO2 Nanocrystalline for Hg2+ Detection in Environmental Samples DOI Creative Commons

Chunyuan Tian,

Feiyan Tang,

Wei Guo

et al.

Molecules, Journal Year: 2023, Volume and Issue: 29(1), P. 1 - 1

Published: Dec. 19, 2023

The excessive concentration of heavy-metal mercury ions (Hg2+) in the environment seriously affects ecological and even threatens human health. Therefore, it is necessary to develop rapid low-cost determination methods achieve trace detection Hg2+. In this paper, an Electrochemiluminescence (ECL) sensing platform using a functionalized rare-earth material (cerium oxide, CeO2) as luminescent unit aptamer capture was designed constructed. Using specific asymmetric matching between Hg2+ thymine (T) base pairs deoxyribonucleic acid (DNA) single strand, “T−Hg−T” structure formed change ECL signal, leading direct sensitive response results show good linear relationship signal within range 10 pM–100 µM for Hg2+, with limit low 0.35 pM. addition, probe exhibits stable performance excellent specificity identifying target It then successfully used spiked recovery tests actual samples environment. analytical method solves problem poor recognition specificity, provides new idea efficient pollutant environment, broadens prospects development application materials.

Language: Английский

Citations

7

Detection and 2D Imaging of Dopamine Distribution Using a Closed Bipolar Electrode System by Applying a Cathodic Luminophore DOI Creative Commons
Tomoki Iwama,

Mayo Komatsu,

Kumi Y. Inoue

et al.

ChemElectroChem, Journal Year: 2021, Volume and Issue: 8(18), P. 3492 - 3498

Published: June 10, 2021

Abstract A 2D imaging system using closed bipolar electrodes (cBPEs) and electrochemiluminescence (ECL) is expected to realize high spatio‐temporal resolution imaging. However, of the distributions molecules that cause an oxidation reaction on electrode surface was not achieved by cBPE/ECL because conventionally used luminophore can generate ECL only reaction. In this paper, we propose implement a cathodic luminophore, [Ru(bpy) 3 ]Cl 2 /glutathione disulfide (GSSG) producing reduction into enable detection dopamine, which oxidizable redox species important neurotransmitter. The applicability /GSSG for dopamine single cBPE shown its electrochemical properties were discussed. addition, demonstration performed array. These results show potential greatly expand systems cBPE/ECL.

Language: Английский

Citations

16

Effect of Boron-Doping Level and Surface Termination in Diamond on Electrogenerated Chemiluminescence DOI

Kohei Sakanoue,

Andrea Fiorani,

Irkham Irkham

et al.

ACS Applied Electronic Materials, Journal Year: 2021, Volume and Issue: 3(9), P. 4180 - 4188

Published: Sept. 13, 2021

Electrogenerated chemiluminescence (ECL) is a phenomenon of light emission from molecular species that triggered by an electrochemical reaction. As with many systems, ECL highly dependent on the electrode material and its surface state. Boron-doped diamond (BDD) has been applied for ECL, however, thoughtful investigation remains scarce. In particular, peculiar feature BDD tuning properties changing amount boron doping which in turn affects response. Here, we summarize results most important such as Ru(bpy)32+ (bpy = 2,2′-bipyridine)/tri-n-propylamine (TPrA), Ru(bpy)32+/S2O82–, Ru(bpy)32+/SO42–, Ru(bpy)32+/CO32–, luminol/CO32– system, using correlating level to We showed suitable state are system investigated, highlighting importance right choice electrode. While focused these offer general interpretation might be adapted different systems where finds application.

Language: Английский

Citations

16

Advances in electrochemiluminescence for single-cell analysis DOI
Qian Yang, Xiaoyu Huang, Beibei Gao

et al.

The Analyst, Journal Year: 2022, Volume and Issue: 148(1), P. 9 - 25

Published: Dec. 7, 2022

Recent years have witnessed the emergence of innovative analytical methods with high sensitivity and spatiotemporal resolution that allowed qualitative quantitative analysis to be carried out at single-cell subcellular levels. Electrochemiluminescence (ECL) is a unique chemiluminescence high-energy electron transfer triggered by electrical excitation. The ingenious combination electrochemistry results in distinct advantages sensitivity, wide dynamic range good reproducibility. Specifically, ECL (SCECL) excellent has emerged as promising toolbox bioanalysis for revealing individual cells' heterogeneity stochastic processes. This review focuses on advances SCECL bioimaging. history recent probes strategies system design are briefly reviewed. Subsequently, latest representative techniques bioassays, bioimaging therapeutics also highlighted. Then, current challenges future perspectives discussed.

Language: Английский

Citations

12