101
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Zanut A, Palomba F, Rossi Scota M, Rebeccani S, Marcaccio M, Genovese D, Rampazzo E, Valenti G, Paolucci F, Prodi L. Dye‐Doped Silica Nanoparticles for Enhanced ECL‐Based Immunoassay Analytical Performance. Angew Chem Int Ed Engl 2020; 59:21858-21863. [DOI: 10.1002/anie.202009544] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/07/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Alessandra Zanut
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
- Current address: Tandon School of Engineering New York University Brooklyn NY 11201 USA
| | - Francesco Palomba
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
- Current address: Department of Biomedical Engineering University of California Irvine Irvine CA 92697 USA
| | - Matilde Rossi Scota
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Sara Rebeccani
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Massimo Marcaccio
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Damiano Genovese
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Enrico Rampazzo
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Giovanni Valenti
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Francesco Paolucci
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
| | - Luca Prodi
- Department of Chemistry “Giacomo Ciamician” University of Bologna Bologna Italy
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102
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Fiorani A, Han D, Jiang D, Fang D, Paolucci F, Sojic N, Valenti G. Spatially resolved electrochemiluminescence through a chemical lens. Chem Sci 2020; 11:10496-10500. [PMID: 34123186 PMCID: PMC8162283 DOI: 10.1039/d0sc04210b] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 09/13/2020] [Indexed: 12/15/2022] Open
Abstract
Electrochemiluminescence (ECL) microscopy is an emerging technique with a wide range of imaging applications and unique properties in terms of high spatial resolution, surface confinement and favourable signal-to-noise ratio. Despite its successful analytical applications, tuning the depth of field (i.e., thickness of the ECL-emitting layer) is a crucial issue. Indeed, the control of the thickness of this ECL region, which can be considered as an "evanescent" reaction layer, limits the development of cell microscopy as well as bioassays. Here we report an original strategy based on chemical lens effects to tune the ECL-emitting layer in the model [Ru(bpy)3]2+/tri-n-propylamine (TPrA) system. It consists of microbeads decorated with [Ru(bpy)3]2+ labels, classically used in bioassays, and TPrA as the sacrificial coreactant. In particular we exploit the buffer capacity of the solution to modify the rate of the reactions involved in the ECL generation. For the first time, a precise control of the ECL light distribution is demonstrated by mapping the luminescence reactivity at the level of single micrometric bead. The resulting ECL image is the luminescent signature of the concentration profiles of diffusing TPrA radicals, which define the ECL layer. Therefore, our findings provide insights into the ECL mechanism and open new avenues for ECL microscopy and bioassays. Indeed, the reported approach based on a chemical lens controls the spatial extension of the "evanescent" ECL-emitting layer and is conceptually similar to evanescent wave microscopy. Thus, it should allow the exploration and imaging of different heights in substrates or in cells.
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Affiliation(s)
- Andrea Fiorani
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Dongni Han
- Univ. Bordeaux, Bordeaux INP, ISM, UMR CNRS 5255 33607 Pessac France
- School of Pharmacy, Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University Nanjing Jiangsu 211126 China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University Nanjing Jiangsu 210093 China
| | - Danjun Fang
- School of Pharmacy, Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University Nanjing Jiangsu 211126 China
| | - Francesco Paolucci
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Neso Sojic
- Univ. Bordeaux, Bordeaux INP, ISM, UMR CNRS 5255 33607 Pessac France
- Department of Chemistry, South Ural State University Chelyabinsk 454080 Russian Federation
| | - Giovanni Valenti
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2 40126 Bologna Italy
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103
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Ding H, Guo W, Zhou P, Su B. Nanocage-confined electrochemiluminescence for the detection of dopamine released from living cells. Chem Commun (Camb) 2020; 56:8249-8252. [PMID: 32558869 DOI: 10.1039/d0cc03370g] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein we report an electrochemiluminescent nanocage array (ENA) in which luminophores are physically confined. The ENA can function as a solid sensor for the detection of dopamine released from living cells on the basis of its quenching effect on the ECL signal.
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Affiliation(s)
- Hao Ding
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
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104
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Fu Y, Ma Q. Recent developments in electrochemiluminescence nanosensors for cancer diagnosis applications. NANOSCALE 2020; 12:13879-13898. [PMID: 32578649 DOI: 10.1039/d0nr02844d] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In recent years, electrochemiluminescence (ECL) nanosensing systems have undergone rapid development and made significant progress in ultrasensitive analysis and cell imaging. Because of the unique advantages of high selectivity, ultra-sensitivity, and good reproducibility, ECL nanosensors can open new paths for cancer diagnosis. With the development of ECL nanosensors, high-throughput analysis, visual detection and spatially resolved ECL imaging of single cells are being realized. The innovations of ECL nanosensors consist of electrochemical excitation, coreactant catalysis, light radiation and luminescence signal amplification, which involve several fields such as nanotechnology, catalysis, optics, and electrochemistry. The developments of ECL instruments also relate to imaging technology. Herein, we review the construction modes, sensing strategies and cancer diagnosis applications of ECL nanosenors. Firstly, the nano-components of the ECL sensing system are discussed. The construction and signal amplification methods of the nanosensing system are emphasized. Secondly, the high-efficiency cancer identification strategies are presented, including protein tumor marker detection, nucleic acid assay, cancer cell identification and exosome detection. The recent advances in representative examples of ECL nanosenors in cancer diagnosis are highlighted, including high-throughput ECL analysis, in situ assay, visual ECL detection, single-cell imaging diagnosis, and so on. Finally, the challenges are featured based on the recent development of the ECL nanosensing system in the clinical diagnosis. The ECL nanosensors provide effective and reliable analytical methods and open new paths for cancer diagnosis. It is noteworthy that the prospects of the ECL nanosensing system in clinical diagnosis are instructive to the developments of other nanosensor research.
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Affiliation(s)
- Yantao Fu
- Department of thyroid surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
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105
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Ma C, Wei HF, Wang MX, Wu S, Chang YC, Zhang J, Jiang LP, Zhu W, Chen Z, Lin Y. Hydrogen Evolution Reaction Monitored by Electrochemiluminescence Blinking at Single-Nanoparticle Level. NANO LETTERS 2020; 20:5008-5016. [PMID: 32515975 DOI: 10.1021/acs.nanolett.0c01129] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monitoring and characterization methods that provide performance tracking of hydrogen evolution reaction (HER) at the single-nanoparticle level can greatly advance our understanding of catalysts' structure and activity relationships. Electrochemiluminescence (ECL) microscopy is implemented for the first time to identify HER activities of single nanocatalysts and to provide a direction for further optimization. Here, we develop a novel ECL blinking technique at the single-nanoparticle level to directly monitor H2 nanobubbles generated from hollow carbon nitride nanospheres (HCNSs). The ECL ON and OFF mechanisms are identified being closely related to the generation, growth, and collapse of H2 nanobubbles. The power-law distributed durations of ON and OFF states demonstrate multiple catalytic sites with stochastic activities on a single HCNS. The power-law coefficients of ECL blinking increase with improved HER activities from modified HCNSs with other active HER catalysts. Besides, ECL blinking phenomenon provides an explanation for the low cathodic ECL efficiency of semiconductor nanomaterials.
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Affiliation(s)
- Cheng Ma
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Hui-Fang Wei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Min-Xuan Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Shaojun Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Yu-Chung Chang
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Jianrong Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Li-Ping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Wenlei Zhu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Zixuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Yuehe Lin
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
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106
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Liang Z, Zhang Q, Nie Y, Zhang X, Ma Q. Polarized-Electrochemiluminescence Biosensor Based on Surface Plasmon Coupling Strategy and Fluorine-Doped BN Quantum Dots. Anal Chem 2020; 92:9223-9229. [DOI: 10.1021/acs.analchem.0c01558] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zihui Liang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qian Zhang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Yixin Nie
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Xin Zhang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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107
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Dutta P, Han D, Goudeau B, Jiang D, Fang D, Sojic N. Reactivity mapping of luminescence in space: Insights into heterogeneous electrochemiluminescence bioassays. Biosens Bioelectron 2020; 165:112372. [PMID: 32729504 DOI: 10.1016/j.bios.2020.112372] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 12/21/2022]
Abstract
Electrochemiluminescence (ECL) is a powerful (bio)analytical method based on an optical readout. It is successfully applied in the heterogeneous format for immunoassays and imaging using the model and most widely used ECL system, which consists of the immobilized [Ru(bpy)3]2+ label with tripropylamine (TPA) as a coreactant. However, a major drawback is the significant decrease of the ECL intensity over time. Herein, to decipher the process responsible for this progressive loss of ECL signal, we investigated its electrochemical and photophysical properties by mapping the luminescence reactivity at the level of single micrometric beads. Polystyrene beads were functionalized by the [Ru(bpy)3]2+ dye via a sandwich immunoassay or a peptide bond. ECL emission was generated in presence of the very efficient TPA coreactant. Imaging both photoluminescence and ECL reactivities of different regions (located near or far from the electrode surface) of a [Ru(bpy)3]2+-decorated bead allows us to demonstrate the remarkable photophysical stability of the ECL label, even in presence of the very reactive electrogenerated TPA radicals. We show that the ECL vanishing correlates directly with the lower TPA oxidation current. Finally, we propose a simple electrochemical treatment, which allows to regenerate the electrode surface and thus to recover several times the strong initial ECL signal. The reactivity imaging approach provides insights into the ECL mechanism and the main factors governing the stability of the emission, which should find promising ECL applications in bioassays and microscopy.
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Affiliation(s)
- Priyanka Dutta
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607, Pessac, France
| | - Dongni Han
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607, Pessac, France; School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, 211126, China
| | - Bertrand Goudeau
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607, Pessac, France
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life Science and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210093, China
| | - Danjun Fang
- School of Pharmacy and Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, 211126, China.
| | - Neso Sojic
- Univ. Bordeaux, Bordeaux INP, CNRS, UMR 5255, Site ENSCBP, 33607, Pessac, France; Department of Chemistry, South Ural State University, Chelyabinsk, 454080, Russian Federation.
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108
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Gao H, Han W, Qi H, Gao Q, Zhang C. Electrochemiluminescence Imaging for the Morphological and Quantitative Analysis of Living Cells under External Stimulation. Anal Chem 2020; 92:8278-8284. [PMID: 32458679 DOI: 10.1021/acs.analchem.0c00528] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, a simple electrochemiluminescence (ECL) imaging method based on the cell shield of the ECL emission was developed for the morphological and quantitative analysis of living cells under external stimulation. ECL images of MCF-7 cells cultured on or captured at the glassy carbon electrode (GCE) surface in a solution of tris(2,2'-bipyridyl)ruthenium(II)-tri-n-propylamine were recorded. Important morphological characteristics of living cells, including cell shape, cell area, average cell boundary, and junction distance between two adjacent cells, were directly obtained using the developed negative ECL imaging method. The ECL images revealed gradual morphological changes in cells on the GCE surface. During the course of H2O2 stimulation of cells on the GCE surface, cells shrunk, rounded up, disengaged from surrounding cells, and finally detached from the electrode surface. During the course of electrical stimulation (0.8 V), the cells on the GCE surface exhibited aggregation as demonstrated by increases in the average cell boundary and decreases in the junction distance between two adjacent cells. Additionally, a quantitative method for the sensitive determination of MCF-7 cells with a limit of detection of 29 cells/mL was developed using the negative ECL imaging strategy. This work demonstrates that the proposed negative ECL imaging strategy is a promising approach to assess important morphological characteristics of living cells during the course of external stimulation and to obtain quantitative information on cell concentrations in solution.
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Affiliation(s)
- Hongfang Gao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Weijuan Han
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Qiang Gao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
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109
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Electrochemiluminescence in Thermo-Responsive Hydrogel Films with Tunable Thickness. JOURNAL OF ANALYSIS AND TESTING 2020. [DOI: 10.1007/s41664-020-00131-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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110
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Recent Advances in Electrochemiluminescence-Based Systems for Mammalian Cell Analysis. MICROMACHINES 2020; 11:mi11050530. [PMID: 32456040 PMCID: PMC7281524 DOI: 10.3390/mi11050530] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 12/29/2022]
Abstract
Mammalian cell analysis is essential in the context of both fundamental studies and clinical applications. Among the various techniques available for cell analysis, electrochemiluminescence (ECL) has attracted significant attention due to its integration of both electrochemical and spectroscopic methods. In this review, we summarize recent advances in the ECL-based systems developed for mammalian cell analysis. The review begins with a summary of the developments in luminophores that opened the door to ECL applications for biological samples. Secondly, ECL-based imaging systems are introduced as an emerging technique to visualize single-cell morphologies and intracellular molecules. In the subsequent section, the ECL sensors developed in the past decade are summarized, the use of which made the highly sensitive detection of cell-derived molecules possible. Although ECL immunoassays are well developed in terms of commercial use, the sensing of biomolecules at a single-cell level remains a challenge. Emphasis is therefore placed on ECL sensors that directly detect cellular molecules from small portions of cells or even single cells. Finally, the development of bipolar electrode devices for ECL cell assays is introduced. To conclude, the direction of research in this field and its application prospects are described.
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111
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Zhang Q, Zhang X, Ma Q. Recent Advances in Visual Electrochemiluminescence Analysis. JOURNAL OF ANALYSIS AND TESTING 2020. [DOI: 10.1007/s41664-020-00129-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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112
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Guo W, Ding H, Zhou P, Wang Y, Su B. Electrochemiluminescence Waveguide in Single Crystalline Molecular Wires. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915984] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weiliang Guo
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 China
| | - Hao Ding
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 China
| | - Ping Zhou
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 China
| | - Yafeng Wang
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 China
| | - Bin Su
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 China
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113
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Voci S, Duwald R, Grass S, Hayne DJ, Bouffier L, Francis PS, Lacour J, Sojic N. Self-enhanced multicolor electrochemiluminescence by competitive electron-transfer processes. Chem Sci 2020; 11:4508-4515. [PMID: 34122909 PMCID: PMC8159437 DOI: 10.1039/d0sc00853b] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/17/2020] [Indexed: 12/21/2022] Open
Abstract
Controlling electrochemiluminescence (ECL) color(s) is crucial for many applications ranging from multiplexed bioassays to ECL microscopy. This can only be achieved through the fundamental understanding of high-energy electron-transfer processes in complex and competitive reaction schemes. Recently, this field has generated huge interest, but the effective implementation of multicolor ECL is constrained by the limited number of ECL-active organometallic dyes. Herein, the first self-enhanced organic ECL dye, a chiral red-emitting cationic diaza [4]helicene connected to a dimethylamino moiety by a short linker, is reported. This molecular system integrates bifunctional ECL features (i.e. luminophore and coreactant) and each function may be operated either separately or simultaneously. This unique level of control is enabled by integrating but decoupling both molecular functions in a single molecule. Through this dual molecular reactivity, concomitant multicolor ECL emission from red to blue with tunable intensity is readily obtained in aqueous media. This is done through competitive electron-transfer processes between the helicene and a ruthenium or iridium dye. The reported approach provides a general methodology to extend to other coreactant/luminophore systems, opening enticing perspectives for spectrally distinct detection of several analytes, and original analytical and imaging strategies.
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Affiliation(s)
- Silvia Voci
- University of Bordeaux, Bordeaux INP, ISM, UMR CNRS 5255 33607 Pessac France
| | - Romain Duwald
- University of Geneva, Department of Organic Chemistry Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Stéphane Grass
- University of Geneva, Department of Organic Chemistry Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - David J Hayne
- Deakin University, School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment Waurn Ponds Victoria 3216 Australia
| | - Laurent Bouffier
- University of Bordeaux, Bordeaux INP, ISM, UMR CNRS 5255 33607 Pessac France
| | - Paul S Francis
- Deakin University, School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment Waurn Ponds Victoria 3216 Australia
| | - Jérôme Lacour
- University of Geneva, Department of Organic Chemistry Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Neso Sojic
- University of Bordeaux, Bordeaux INP, ISM, UMR CNRS 5255 33607 Pessac France
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114
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Ding H, Guo W, Su B. Electrochemiluminescence Single‐Cell Analysis: Intensity‐ and Imaging‐Based Methods. Chempluschem 2020; 85:725-733. [DOI: 10.1002/cplu.202000145] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/25/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Hao Ding
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 P. R. China
| | - Weiliang Guo
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 P. R. China
| | - Bin Su
- Institute of Analytical ChemistryDepartment of ChemistryZhejiang University Hangzhou 310058 P. R. China
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115
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Guo W, Ding H, Zhou P, Wang Y, Su B. Electrochemiluminescence Waveguide in Single Crystalline Molecular Wires. Angew Chem Int Ed Engl 2020; 59:6745-6749. [PMID: 31944544 DOI: 10.1002/anie.201915984] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/05/2020] [Indexed: 12/16/2022]
Abstract
Here we report the first observation of active waveguide of electrochemiluminescence (ECL) in single crystalline molecular wires self-assembled from cyclometalated iridium(III) complexes, namely tris(1-phenylisoquinoline-C2 , N) (Ir(piq)3 ). Under dark conditions, the molecular wires deposited on the electrode surface can act as both ECL emitters and active waveguides. As revealed by ECL microscopy, they exhibit the typical characteristics of optical waveguides, transmitting ECL and generating much brighter ECL emission at their terminals. Moreover, self-generated ECL can be confined inside the molecular wire and propagates along the longitudinal direction as far as ≈100 μm to the terminal out of touch with the electrode. Therefore, this one-dimensional crystalline molecular wire-based waveguide offers the opportunity to switch the electrochemically generated ECL to remote light emission in non-conductive regions and is promising for contactless electrochemical analysis and study of (bio)chemical systems.
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Affiliation(s)
- Weiliang Guo
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Hao Ding
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Ping Zhou
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Yafeng Wang
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou, 310058, China
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116
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Iwama T, Inoue KY, Abe H, Matsue T, Shiku H. Bioimaging using bipolar electrochemical microscopy with improved spatial resolution. Analyst 2020; 145:6895-6900. [DOI: 10.1039/d0an00912a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this study, we developed bipolar electrochemical microscopy (BEM) using a closed bipolar electrode (cBPE) array with an electrochemiluminescence (ECL) detecting system.
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Affiliation(s)
- Tomoki Iwama
- Graduate School of Environmental Studies
- Tohoku University
- Sendai
- Japan
| | - Kumi Y. Inoue
- Graduate School of Environmental Studies
- Tohoku University
- Sendai
- Japan
| | - Hiroya Abe
- Frontier Research Institute for Interdisciplinary Sciences
- Tohoku University
- Sendai
- Japan
| | - Tomokazu Matsue
- Center for Promotion of Innovation Strategy
- Tohoku University
- Sendai
- Japan
| | - Hitoshi Shiku
- Graduate School of Environmental Studies
- Tohoku University
- Sendai
- Japan
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