1
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Jamal RB, Bay Gosewinkel U, Ferapontova EE. Electrocatalytic aptasensor for bacterial detection exploiting ferricyanide reduction by methylene blue on mixed PEG/aptamer monolayers. Bioelectrochemistry 2024; 156:108620. [PMID: 38006817 DOI: 10.1016/j.bioelechem.2023.108620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
Pathogen-triggered infections are the most severe global threat to human health, and to provide their timely treatment and prevention, robust methods for rapid and reliable identification of pathogenic microorganisms are required. Here, we have developed a fast and inexpensive electrocatalytic aptamer assay enabling specific and ultrasensitive detection of E. coli. E. coli, a biomarker of environmental contamination and infections, was captured on the mixed aptamer/thiolated PEG self-assembled monolayers formed on electrochemically pre-treated gold screen-printed electrodes (SPE). Signals from aptamer - E. coli binding were amplified by electrocatalytic reduction of ferricyanide mediated by methylene blue (MB) adsorbed on bacterial and aptamer surfaces. PEG operated as an antifouling agent and inhibited direct (not MB-mediated) discharge of ferricyanide. The assay allowed from 10 to 1000 CFU mL-1E. coli detection in 30 min, with no interference from B. subtilis, in buffer and artificial urine samples. This electrocatalytic approach is fast, specific, sensitive, and can be used directly in in-field and point-of-care applications for analysis of bacteria in human environment.
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Affiliation(s)
- Rimsha B Jamal
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Ulrich Bay Gosewinkel
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
| | - Elena E Ferapontova
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
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2
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Yin HJ, Wang KZ. Porous Electropolymerized Films of Ruthenium Complex: Photoelectrochemical Properties and Photoelectrocatalytic Synthesis of Hydrogen Peroxide. Molecules 2024; 29:734. [PMID: 38338477 PMCID: PMC10856344 DOI: 10.3390/molecules29030734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/30/2024] [Accepted: 02/03/2024] [Indexed: 02/12/2024] Open
Abstract
The photoelectrochemical cells (PECs) performing high-efficiency conversions of solar energy into both electricity and high value-added chemicals are highly desirable but rather challenging. Herein, we demonstrate that a PEC using the oxidatively electropolymerized film of a heteroleptic Ru(II) complex of [Ru(bpy)(L)2](PF6)2Ru1 {bpy and L stand for 2,2'-bipyridine and 1-phenyl-2-(4-vinylphenyl)-1H-imidazo[4,5-f][1,10]phenanthroline respectively}, polyRu1, as a working electrode performed both efficient in situ synthesis of hydrogen peroxide and photocurrent generation/switching. Specifically, when biased at -0.4 V vs. saturated calomel electrode and illuminated with 100 mW·cm-2 white light, the PEC showed a significant cathodic photocurrent density of 9.64 μA·cm-2. Furthermore, an increase in the concentrations of quinhydrone in the electrolyte solution enabled the photocurrent polarity to switch from cathodic to anodic, and the anodic photocurrent density reached as high as 11.4 μA·cm-2. Interestingly, in this single-compartment PEC, the hydrogen peroxide yield reached 2.63 μmol·cm-2 in the neutral electrolyte solution. This study will serve as a guide for the design of high-efficiency metal-complex-based molecular systems performing photoelectric conversion/switching and photoelectrochemical oxygen reduction to hydrogen peroxide.
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Affiliation(s)
- Hong-Ju Yin
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China;
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Ke-Zhi Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China;
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3
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Kékedy-Nagy L, Perry JM, Little SR, Llorens OY, Shih SCC. An electrochemical aptasensor for Δ 9-tetrahydrocannabinol detection in saliva on a microfluidic platform. Biosens Bioelectron 2023; 222:114998. [PMID: 36549107 DOI: 10.1016/j.bios.2022.114998] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/21/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
We present a novel "on-off", cost-effective, rapid electrochemical aptasensor combined with a microfluidics cartridge system for the detection of Δ9-THC (Δ9-tetrahydrocannabinol) in human saliva via differential pulse voltammetry. The assay relied on the competitive binding between the Δ9-THC and a soluble redox indicator methylene blue, using an aptamer selected via FRELEX. We found that the aptasensor can detected 1 nM of Δ9-THC in PBS in a three-electrode cell system, while the sensitivity and both the dissociation constant (Kd) and association constant (Kb) were dependent on the aptamer density. The aptamer also showed great affinity towards Δ9-THC when tested against cannabinol and cannabidiol. The same limit of detection of 1 nM in PBS was achieved in small volume samples (∼60 μL) using the aptamer-modified gold screen-printed electrodes combined with the microfluidic cartridge setup, however, the presence of 10% raw human saliva had a negative effect which manifested in a 10-fold increase in the LOD due to interfering elements. Filtering the saliva, improved the tested volume to 50% and the LOD to 5 nM of Δ9-THC which is lower than the concentrations associated with impairment (6.5-32 nM). The aptasensor showed a good storage capability up to 3 days, however, the reusability significantly dropped from 10 cycles (freshly prepared) to 5 cycles. The results clearly demonstrate the feasibility of the aptasensor platform with the microfluidics chamber towards a point-of-care testing application for the detection of Δ9-THC in saliva.
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Affiliation(s)
- László Kékedy-Nagy
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - James M Perry
- Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada; Department of Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Samuel R Little
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Oriol Y Llorens
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada
| | - Steve C C Shih
- Department of Electrical and Computer Engineering, Concordia University, 1455 de Maisonneuve Blvd West, Montreal, Quebec, H3G1M8, Canada; Centre for Applied Synthetic Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada; Department of Biology, Concordia University, 7141 Sherbrooke St. West, Montreal, Quebec, H4B1R6, Canada.
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4
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Poujouly C, Le Gall J, Freisa M, Kechkeche D, Bouville D, Khemir J, Gonzalez-Losada P, Gamby J. Microfluidic Chip for the Electrochemical Detection of MicroRNAs: Methylene Blue Increasing the Specificity of the Biosensor. Front Chem 2022; 10:868909. [PMID: 35425760 PMCID: PMC9002130 DOI: 10.3389/fchem.2022.868909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are biomarkers involved in biological processes that are released by cells and found in biological fluids such as blood. The development of nucleic acid-based biosensors has significantly increased in the past 10 years because the detection of such nucleic acids can easily be applied in the field of early diagnosis. These biosensors need to be sensitive, specific, and fast in order to be effective. This work introduces a newly-built electrochemical biosensor that enables a fast detection in 30 min and, as a result of its integration in microfluidics, presents a limit of detection as low as 1 aM. The litterature concerning the specificity of electrochemical biosensors includes several studies that report one base-mismatch, with the base-mismatch located in the middle of the strand. We report an electrochemical nucleic acid biosensor integrated into a microfluidic chip, allowing for a one-base-mismatch specificity independently from the location of the mismatch in the strand. This specificity was improved using a solution of methylene blue, making it possible to discriminate a partial hybridization from a complete and complementary hybridization.
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Abstract
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Over the past 25
years, collective evidence has demonstrated that
the DNA base-pair stack serves as a medium for charge transport chemistry
in solution and on DNA-modified gold surfaces. Since this charge transport
depends sensitively upon the integrity of the DNA base pair stack,
perturbations in base stacking, as may occur with DNA base mismatches,
lesions, and protein binding, interrupt DNA charge transport (DNA
CT). This sensitivity has led to the development of powerful DNA electrochemical
sensors. Given the utility of DNA electrochemistry for sensing and
in response to recent literature, we describe critical protocols and
characterizations necessary for performing DNA-mediated electrochemistry.
We demonstrate DNA electrochemistry with a fully AT DNA sequence using
a thiolated preformed DNA duplex and distinguish this DNA-mediated
chemistry from that of electrochemistry of largely single-stranded
DNA adsorbed to the surface. We also demonstrate the dependence of
DNA CT on a fully stacked duplex. An increase in the percentage of
mismatches within the DNA monolayer leads to a linear decrease in
current flow for a DNA-bound intercalator, where the reaction is DNA-mediated;
in contrast, for ruthenium hexammine, which binds electrostatically
to DNA and the redox chemistry is not DNA-mediated, there is no effect
on current flow with mismatches. We find that, with DNA as a well
hybridized duplex, upon assembly, a DNA-mediated pathway facilitates
the electron transfer between a well coupled redox probe and the gold
surface. Overall, this report highlights critical points to be emphasized
when utilizing DNA electrochemistry and offers explanations and controls
for analyzing confounding results.
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Affiliation(s)
- Adela Nano
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Ariel L Furst
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael G Hill
- Department of Chemistry, Occidental College, Los Angeles, California 90041, United States
| | - Jacqueline K Barton
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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Saha U, Todi K, Malhotra BD. Emerging DNA-based multifunctional nano-biomaterials towards electrochemical sensing applications. Nanoscale 2021; 13:10305-10319. [PMID: 34086027 DOI: 10.1039/d1nr02409d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
DNA is known to be ubiquitous in nature as it is the controlling unit for genetic information storage in most living organisms. Lately, there has been a surge in studies relating to the use of DNA as a biomaterial for various biomedical applications such as biosensing, therapeutics, and drug delivery. The role of DNA as a bioreceptor in biosensors has been known for a long time. DNA-based biosensors are gradually evolving into highly sophisticated and sensitive molecular devices. The current realization of DNA-based biosensors embraces the unique structural and functional properties of DNA in the form of a biopolymer. The interesting properties of DNA, such as self-assembly, programmability, catalytic activity, dynamic behavior, and precise molecular recognition, have led to the emergence of innovative DNA assembly based electrochemical biosensors. This review article aims to cover the recent progress in the field of DNA-based electrochemical (EC) biosensors. It commences with an introduction to electrochemical biosensors and elucidates the advantages of integrating DNA-based materials into them. Besides this, we discuss the principles of EC biosensors based on different types of DNA-based materials. The article concludes by highlighting the outlook and importance of this interesting field for biomedical developments.
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Affiliation(s)
- Udiptya Saha
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, New Delhi 110042, India.
| | - Keshav Todi
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, New Delhi 110042, India.
| | - Bansi D Malhotra
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, New Delhi 110042, India.
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Pankratov D, Bendixen M, Shipovskov S, Gosewinkel U, Ferapontova EE. Cellulase-Linked Immunomagnetic Microbial Assay on Electrodes: Specific and Sensitive Detection of a Single Bacterial Cell. Anal Chem 2020; 92:12451-12459. [PMID: 32799451 DOI: 10.1021/acs.analchem.0c02262] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pathogen-associated infections represent one of the major threats to human health and require reliable methods for immediate and robust identification of pathogenic microorganisms. Here, an inexpensive cellulase-linked immunomagnetic methodology was developed for the specific and ultrasensitive analysis of bacteria at their single-cell levels within a 3 h procedure. Detection of a model bacterium, Escherichia coli, was performed in a sandwich reaction with E. coli-specific either aptamer or antibody (Ab)-modified magnetic beads (MBs) and Ab/aptamer reporter molecules linked to cellulase. The cellulase-labeled immuno-aptamer sandwich applied onto nitrocellulose-film-modified electrodes digested the film and changed its electrical conductivity. Electrode's chronocoulometric responses at 0.3 V, in the absence of any redox indicators, allowed a single E. coli cell detection and from 1 to 4 × 104 CFU mL-1 E. coli quantification. No interference/cross-reactivity from Salmonella enteritidis, Enterobacter agglomerans, Pseudomonas putida, Staphylococcus aureus, and Bacillus subtilis was observed when the assay was performed on Ab-modified MBs, and E. coli could be quantified in tap water and milk. This electrochemically label-free methodology is sufficiently fast, highly specific, and sensitive to be used in direct in-field applications. The assay can be adapted for specific detection of other bacterial strains of either the same or different species and offers new analytical tools for fast, specific, and reliable analysis of bacteria in the clinic, food, and environment.
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Affiliation(s)
- Dmitrii Pankratov
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C DK-8000, Denmark
| | - Mads Bendixen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C DK-8000, Denmark
| | - Stepan Shipovskov
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C DK-8000, Denmark
| | - Ulrich Gosewinkel
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Roskilde DK-4000, Denmark
| | - Elena E Ferapontova
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, Aarhus C DK-8000, Denmark
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8
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Li Y, Liu D, Zhu C, Shen X, Liu Y, You T. Sensitivity programmable ratiometric electrochemical aptasensor based on signal engineering for the detection of aflatoxin B1 in peanut. J Hazard Mater 2020; 387:122001. [PMID: 31901843 DOI: 10.1016/j.jhazmat.2019.122001] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/11/2019] [Accepted: 12/29/2019] [Indexed: 06/10/2023]
Abstract
Accurately monitoring of aflatoxin B1 (AFB1), the most hazardous mycotoxin in agricultural products, is essential for the public health, but various testing demands (e.g. detection range, sensitivity) for different samples can be challenging for sensors. Here, we developed a sensitivity-programmable ratiometric electrochemical aptasensor for AFB1 analysis in peanut. Thionine functionalized reduced graphene oxide (THI-rGO) served as reference signal generator, ferrocene-labelled aptamer (Fc-apt) output the response signal. During analysis, the formation of Fc-apt-AFB1 complex led to its stripping from the electrode and faded the current intensity of Fc (IFc), while the current intensity of THI (ITHI) was enhanced. And ratiometric detection of AFB1 was achieved by using the current intensity ratio (ITHI/IFc) as quantitative signal. Compared with ratiometric strategies that highly rely on the labelled aptamers, the proposed strategy could regulate the value of ITHI/IFc by changing the modification of Fc-apt. And the detection sensitivity was found to be closely related to ITHI/IFc. Under the optimal conditions, the fabricated aptasensor with a dynamic range from 0.05-20 ng mL-1 and a detection limit of 0.016 ng mL-1 for AFB1 analysis. Besides, it exhibited excellent selectivity, reliability and reproducibility. The proposed sensitivity-programmable biosensor can be applied to detect various aptamer-recognized mycotoxins in agricultural sensing.
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Affiliation(s)
- Yuye Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Chengxi Zhu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiuli Shen
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yang Liu
- College of Science and Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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Abstract
The ability of the DNA double helix to transport electrons underlies many life-centered biological processes and bio-electronic applications. However, there is little consensus on how efficiently the base pair π-stacks of DNA mediate electron transport. This minireview scrutinizes the current state-of-the-art knowledge on electron transfer (ET) properties of DNA and its long-range ability to transfer (mediate) electrical signals at electrified interfaces, without being oxidized or reduced. Complex changes an electric field induces in the DNA structure and its electronic properties govern the efficiency of DNA-mediated ET at electrodes and allow addressing the existing phenomenological riddles, while recently discovered rectifying properties of DNA contribute both to our understanding of DNA's ET in living systems and to advances in molecular bioelectronics.
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Affiliation(s)
- Elena E Ferapontova
- Interdisciplinary Nanoscience Center, Science and Technology, Aarhus University, Gustav Wieds Vej 1590-14, 8000, Aarhus C, Denmark
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10
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Kékedy-nagy L, Shipovskov S, Ferapontova EE. Electrocatalysis of ferricyanide reduction mediated by electron transfer through the DNA duplex: Kinetic analysis by thin layer voltammetry. Electrochim Acta 2019; 318:703-10. [DOI: 10.1016/j.electacta.2019.06.117] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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13
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Li Y, Chang Y, Ma J, Wu Z, Yuan R, Chai Y. Programming a Target-Initiated Bifunctional DNAzyme Nanodevice for Sensitive Ratiometric Electrochemical Biosensing. Anal Chem 2019; 91:6127-6133. [DOI: 10.1021/acs.analchem.9b00690] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yunrui Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Yuanyuan Chang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Jing Ma
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Zhongyu Wu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
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14
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Kékedy‐Nagy L, Ferapontova EE. Directional Preference of DNA‐Mediated Electron Transfer in Gold‐Tethered DNA Duplexes: Is DNA a Molecular Rectifier? Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- László Kékedy‐Nagy
- Interdisciplinary Nanoscience Center (iNANO)Aarhus University Gustav Wieds Vej 1590-14 DK-8000 Aarhus C Denmark
| | - Elena E. Ferapontova
- Interdisciplinary Nanoscience Center (iNANO)Aarhus University Gustav Wieds Vej 1590-14 DK-8000 Aarhus C Denmark
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15
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Kékedy‐Nagy L, Ferapontova EE. Directional Preference of DNA‐Mediated Electron Transfer in Gold‐Tethered DNA Duplexes: Is DNA a Molecular Rectifier? Angew Chem Int Ed Engl 2019; 58:3048-3052. [DOI: 10.1002/anie.201809559] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 10/26/2018] [Indexed: 12/20/2022]
Affiliation(s)
- László Kékedy‐Nagy
- Interdisciplinary Nanoscience Center (iNANO)Aarhus University Gustav Wieds Vej 1590-14 DK-8000 Aarhus C Denmark
| | - Elena E. Ferapontova
- Interdisciplinary Nanoscience Center (iNANO)Aarhus University Gustav Wieds Vej 1590-14 DK-8000 Aarhus C Denmark
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16
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Wang H, Sun H, Zhang Y, Zhang C, Cheng Q, Hou S, Liao J, Wang K. Three-dimensional high-rate electropolymerized thin film with exceptionally high photocurrent based on a triphenylamine-containing ruthenium complex. Electrochim Acta 2019; 298:265-78. [DOI: 10.1016/j.electacta.2018.12.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Yang T, Zhang CX, Li YJ, Fu YH, Yin ZH, Gao LH, Wang KZ. A 3D electropolymerized thin film based on a thiophene-functionalized Ru( ii) complex: electrochemical and photoelectrochemical insights. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00863b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A 3D electropolymerized Ru(ii) complex film exhibited a rapid redox reaction and an oxygen reduction enhanced photocurrent which increased by 1.5 fold to 2.3 μA cm−2.
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Affiliation(s)
- Tong Yang
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Chen-Xing Zhang
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Yu-Jia Li
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Ying-Huan Fu
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Zhi-Han Yin
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
| | - Li-Hua Gao
- School of Science
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Ke-Zhi Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- P.R. China
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