1
|
Argoubi W, Algethami FK, Raouafi N. Enhanced sensitivity in electrochemical detection of ochratoxin A within food samples using ferrocene- and aptamer-tethered gold nanoparticles on disposable electrodes. RSC Adv 2024; 14:8007-8015. [PMID: 38454949 PMCID: PMC10918640 DOI: 10.1039/d3ra08567h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/01/2024] [Indexed: 03/09/2024] Open
Abstract
Ensuring food security is crucial for public health, and the presence of mycotoxins, produced by fungi in improperly stored processed or unprocessed food, poses a significant threat. This research introduces a novel approach - a disposable aptasensing platform designed for the detection of ochratoxin A (OTA). The platform employs gold-nanostructured screen-printed carbon electrodes functionalized with a ferrocene derivative, serving as an integrated faradaic transducing system, and an anti-OTA aptamer as a bioreceptor site. Detection relies on the ferrocene electrochemical signal changes induced by the aptamer folding in the presence of the target molecule. Remarkably sensitive, the platform detects OTA within the range of 0.5 to 70 ng mL-1 and a detection limit of 11 pg mL-1. This limit is approximately 200 times below the levels stipulated by the European Commission for agricultural commodities. Notably, the sensing device exhibits efficacy in detecting OTA in complex media, such as roasted coffee beans and wine, without the need for sample pretreatment, yielding accurate recoveries. Furthermore, while label-free electrochemical aptasensors have proliferated, this study addresses a gap in understanding the binding mechanisms of some aptasensors. To enhance the experimental findings, a theoretical study was conducted to underscore the specificity of the anti-OTA aptamer as a donor for OTA detection. The molecular docking technique was employed to unveil the key binding region of the aptamer, providing valuable insights into the aptasensor specificity.
Collapse
Affiliation(s)
- Wicem Argoubi
- Sensors and Biosensors Group, ACE-Lab (LR99ES15), Faculty of Science, University of Tunis El Manar 2092 Tunis El Manar Tunisia
| | - Faisal K Algethami
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) P.O. Box 90950 Riyadh 11623 Saudi Arabia
| | - Noureddine Raouafi
- Sensors and Biosensors Group, ACE-Lab (LR99ES15), Faculty of Science, University of Tunis El Manar 2092 Tunis El Manar Tunisia
| |
Collapse
|
2
|
Di Masi S, Costa M, Canfarotta F, Guerreiro A, Hartley A, Piletsky SA, Malitesta C. An impedimetric sensor based on molecularly imprinted nanoparticles for the determination of trypsin in artificial matrices - towards point-of-care diagnostics. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:742-750. [PMID: 38224108 DOI: 10.1039/d3ay01762a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
A high-performance impedimetric sensing platform was designed to detect proteins by employing molecularly imprinted polymeric nanoparticles (nanoMIPs) as selective receptors. This was achieved via the combination of the nanoMIPs with a self-assembled thioctic acid (SAM-TA) monolayer onto screen-printed gold electrodes, providing stable covalent attachment of the selective binder to the transducer. Taguchi design has been modelled to achieve the optimal level of sensor fabrication parameters and to maximise the immobilisation of nanoMIPs and their response (e.g. the response of imprinted polymers compared with the non-imprinted control). The developed sensor was tested towards a range of concentrations of trypsin dissolved in ammonium acetate (pH = 6) and showed promising applicability in artificial saliva, with a recovery percentage between 103 and 107%.
Collapse
Affiliation(s)
- Sabrina Di Masi
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| | - Marco Costa
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| | | | | | - Alicia Hartley
- MIP Discovery, Colworth Park, Sharnbrook, MK44 1LQ Bedford, UK.
| | - Sergey A Piletsky
- Department of Chemistry, University of Leicester, University Rd, LE1 7RH Leicester, UK
| | - Cosimino Malitesta
- Laboratorio di Chimica Analitica, DiSTeBA, Università del Salento, Edificio A6, Via per Monteroni, 73100, Lecce, Italy.
| |
Collapse
|
3
|
Dief EM, Darwish N. SARS-CoV-2 spike proteins react with Au and Si, are electrically conductive and denature at 3 × 10 8 V m -1: a surface bonding and a single-protein circuit study. Chem Sci 2023; 14:3428-3440. [PMID: 37006686 PMCID: PMC10055994 DOI: 10.1039/d2sc06492h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/17/2023] [Indexed: 02/19/2023] Open
Abstract
Developing means to characterise SARS-CoV-2 and its new variants is critical for future outbreaks. SARS-CoV-2 spike proteins have peripheral disulfide bonds (S-S), which are common in all spike proteins of SARS-CoV-2 variants, in other types of coronaviruses (e.g., SARS-CoV and MERS-CoV) and are likely to be present in future coronaviruses. Here, we demonstrate that S-S bonds in the spike S1 protein of SARS-CoV-2 react with gold (Au) and silicon (Si) electrodes. Bonding to Si is induced by a spontaneous electrochemical reaction that involves oxidation of Si-H and the reduction of the S-S bonds. The reaction of the spike protein with Au enabled single-molecule protein circuits, by connecting the spike S1 protein between two Au nano-electrodes using the scanning tunnelling microscopy-break junction (STM-BJ) technique. The conductance of a single spike S1 protein was surprisingly high and ranged between two states of 3 × 10-4 G 0 and 4 × 10-6 G 0 (1G 0 = 77.5 μS). The two conductance states are governed by the S-S bonds reaction with Au which controls the orientation of the protein in the circuit, and via which different electron pathways are created. The 3 × 10-4 G 0 level is attributed to a single SARS-CoV-2 protein connecting to the two STM Au nano-electrodes from the receptor binding domain (RBD) subunit and the S1/S2 cleavage site. A lower 4 × 10-6 G 0 conductance is attributed to the spike protein connecting to the STM electrodes from the RBD subunit and the N-terminal domain (NTD). These conductance signals are only observed at electric fields equal to or lower than 7.5 × 107 V m-1. At an electric field of 1.5 × 108 V m-1, the original conductance magnitude decreases accompanied by a lower junction yield, suggesting a change in the structure of the spike protein in the electrified junction. Above an electric field of 3 × 108 V m-1, the conducting channels are blocked and this is attributed to the spike protein denaturing in the nano-gap. These findings open new venues for developing coronavirus-capturing materials and offer an electrical method for analysing, detecting and potentially electrically deactivating coronaviruses and their future variants.
Collapse
Affiliation(s)
- Essam M Dief
- School of Molecular and Life Sciences, Curtin University Bentley WA 6102 Australia
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin University Bentley WA 6102 Australia
| |
Collapse
|
4
|
Meftah M, Habel A, Baachaoui S, Yaacoubi-Loueslati B, Raouafi N. Sensitive electrochemical detection of polymorphisms in IL6 and TGFβ1 genes from ovarian cancer DNA patients using EcoRI and DNA hairpin-modified gold electrodes. Mikrochim Acta 2022; 190:15. [PMID: 36479645 DOI: 10.1007/s00604-022-05595-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022]
Abstract
Two electrochemical bioplatforms were prepared based on thiolated hairpin DNA probes tethered to AuNP-modified screen-printed electrodes to detect T > G and T > C polymorphisms, namely rs1880269 and rs1800469, present the interleukin-6 (IL6) and transforming growth factor β1 (TGFβ1) genes. The electrochemical readout was ensured by the detection of the double-stranded DNA using methylene blue as a redox probe after treatment by EcoRI restrictase. The main parameters influencing the analytical response such as the thiolated DNA probe concentration, incubation time with electrode, DNA hybridization time, EcoRI enzyme load, and its cleavage time were optimized based on the current intensity and signal-to-blank (S/B) ratio as selection criteria. Using spiked buffer solutions, the IL6 and TGFβ1 E-bioplatforms display wide ranges of linearity (1 × 102-1 × 108 fM and 5 × 101-1 × 105 fM, respectively) and limits of detection (47.9 fM and 16.6 fM, respectively). The two bioelectrodes have also good discrimination toward 1-mismatched, two mismatched, and non-complementary sequences, when they were used 30-fold higher than the target sequences. More importantly, the two bioplatforms successfully detected the single nucleotide polymorphisms (SNPs) in scarcely diluted genomic DNA, collected from 52 donors, and showed they can reliably distinguish between heterozygous (TG and TC genotypes) and homozygous (GG and CC genotypes) patients with respect to the control subjects (TT genotype), where the differences are statistically highly significant (p-value < 0.0001). Thus, the designed devices could be used to conduct large cohort studies targeting these mutations or extended to other SNPs.
Collapse
Affiliation(s)
- Maroua Meftah
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Azza Habel
- Laboratory of Mycology, Pathologies and Biomarkers (LR16ES05), Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Sabrine Baachaoui
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Basma Yaacoubi-Loueslati
- Laboratory of Mycology, Pathologies and Biomarkers (LR16ES05), Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Noureddine Raouafi
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia.
| |
Collapse
|
5
|
Pramounmat N, Asaei S, Hostert JD, Young K, von Recum HA, Renner JN. Grafting of short elastin-like peptides using an electric field. Sci Rep 2022; 12:18682. [PMID: 36333395 PMCID: PMC9636273 DOI: 10.1038/s41598-022-21672-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Surface-grafted elastin has found a wide range of uses such as sensing, tissue engineering and capture/release applications because of its ability to undergo stimuli-responsive phase transition. While various methods exist to control surface grafting in general, it is still difficult to control orientation as attachment occurs. This study investigates using an electric field as a new approach to control the surface-grafting of short elastin-like polypeptide (ELP). Characterization of ELP grafting to gold via quartz crystal microbalance with dissipation, atomic force microscopy and temperature ramping experiments revealed that the charge/hydrophobicity of the peptides, rearrangement kinetics and an applied electric field impacted the grafted morphology of ELP. Specifically, an ELP with a negative charge on the opposite end of the surface-binding moiety assembled in a more upright orientation, and a sufficient electric field pushed the charge away from the surface compared to when the same peptide was assembled in no electric field. In addition, this study demonstrated that assembling charged ELP in an applied electric field impacts transition behavior. Overall, this study reveals new strategies for achieving desirable and predictable surface properties of surface-bound ELP.
Collapse
Affiliation(s)
- Nuttanit Pramounmat
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Sogol Asaei
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | - Jacob D. Hostert
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| | | | - Horst A. von Recum
- grid.67105.350000 0001 2164 3847Department of Biomedical Engineering, Case Western Reserve University, Cleveland, USA
| | - Julie N. Renner
- grid.67105.350000 0001 2164 3847Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, USA
| |
Collapse
|
6
|
Laroussi A, Raouafi N, Mirsky VM. Electrocatalytic Sensor for Hydrogen Peroxide Based on Immobilized Benzoquinone. ELECTROANAL 2021. [DOI: 10.1002/elan.202100113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Arwa Laroussi
- University of Tunis El Manar Faculty of Science of Tunis Chemistry Department Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15) campus universitaire de Tunis El Manar 2092 Tunis El Manar Tunisia
- Department of Nanobiotechnology Institute of Biotechnology Brandenburg University of Technology Cottbus-Senftenberg 01968 Senftenberg Germany
| | - Noureddine Raouafi
- University of Tunis El Manar Faculty of Science of Tunis Chemistry Department Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15) campus universitaire de Tunis El Manar 2092 Tunis El Manar Tunisia
| | - Vladimir M. Mirsky
- Department of Nanobiotechnology Institute of Biotechnology Brandenburg University of Technology Cottbus-Senftenberg 01968 Senftenberg Germany
| |
Collapse
|
7
|
Hamami M, Mars A, Raouafi N. Biosensor based on antifouling PEG/Gold nanoparticles composite for sensitive detection of aflatoxin M1 in milk. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106102] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
8
|
Gibson JS, Mendes PM. Elucidating the Influence of Electrical Potentials on the Formation of Charged Oligopeptide Self-Assembled Monolayers on Gold. Chemphyschem 2021; 22:684-692. [PMID: 33534936 PMCID: PMC8048453 DOI: 10.1002/cphc.202000988] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/02/2021] [Indexed: 11/09/2022]
Abstract
Self-assembled monolayers (SAMs) based on oligopeptides have garnered immense interest for a wide variety of innovative biomedical and electronic applications. However, to exploit their full potential, it is necessary to understand and control the surface chemistry of oligopeptides. Herein, we report on how different electrical potentials affect the adsorption kinetics, stability and surface coverage of charged oligopeptide SAMs on gold surfaces. Kinetic analysis using electrochemical surface plasmon resonance (e-SPR) reveals a slower oligopeptide adsorption rate at more positive or negative electrical potentials. Additional analysis of the potential-assisted formed SAMs by X-ray photoelectron spectroscopy demonstrates that an applied electrical potential has minimal effect on the packing density. These findings not only reveal that charged oligopeptides exhibit a distinct potential-assisted assembly behaviour but that an electrical potential offers another degree of freedom in controlling their adsorption rate.
Collapse
Affiliation(s)
- Joshua S Gibson
- School of Chemical Engineering, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK
| | - Paula M Mendes
- School of Chemical Engineering, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK
| |
Collapse
|
9
|
Dief EM, Darwish N. Ultrasonic Generation of Thiyl Radicals: A General Method of Rapidly Connecting Molecules to a Range of Electrodes for Electrochemical and Molecular Electronics Applications. ACS Sens 2021; 6:573-580. [PMID: 33355460 DOI: 10.1021/acssensors.0c02413] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report ultrasonic generation of thiyl radicals as a general method for functionalizing a range of surfaces with organic molecules. The method is simple, rapid, can be utilized at ambient conditions and involves sonicating a solution of disulfide molecules, homolytically cleaving S-S bonds and generating thiyl radicals that react with the surfaces by forming covalently bound monolayers. Full molecular coverages on conducting oxides (ITO), semiconductors (Si-H), and carbon (GC) electrode surfaces can be achieved within a time scale of 15-90 min. The suitability of this method to connect the same molecule to different electrodes enabled comparing the conductivity of single molecules and the electrochemical electron transfer kinetics of redox active monolayers as a function of the molecule-electrode contact. We demonstrate, using STM break-junction technique, single-molecule heterojunction comprising Au-molecule-ITO and Au-molecule-carbon circuits. We found that despite using the same molecule, the single-molecule conductivity of Au-molecule-carbon circuits is about an order of magnitude higher than that of Au-molecule-ITO circuits. The same trend was observed for electron transfer kinetics, measured using electrochemical impedance spectroscopy for ferrocene-terminated monolayers on carbon and ITO. This suggests that the interfacial bond between different electrodes and the same molecule can be used to tune the conductivity of single-molecule devices and to control the rate of charge transport in redox active monolayers, opening prospects for relating various types of interfacial charge-transfer rate processes.
Collapse
Affiliation(s)
- Essam M. Dief
- School of Molecular and Life Sciences, Curtin University, Bentley, Western Australia 6102, Australia
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin University, Bentley, Western Australia 6102, Australia
| |
Collapse
|
10
|
Dief EM, Vogel YB, Peiris CR, Le Brun AP, Gonçales VR, Ciampi S, Reimers JR, Darwish N. Covalent Linkages of Molecules and Proteins to Si-H Surfaces Formed by Disulfide Reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14999-15009. [PMID: 33271017 DOI: 10.1021/acs.langmuir.0c02391] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Thiols and disulfide contacts have been, for decades, key for connecting organic molecules to surfaces and nanoclusters as they form self-assembled monolayers (SAMs) on metals such as gold (Au) under mild conditions. In contrast, they have not been similarly deployed on Si owing to the harsh conditions required for monolayer formation. Here, we show that SAMs can be simply formed by dipping Si-H surfaces into dilute solutions of organic molecules or proteins comprising disulfide bonds. We demonstrate that S-S bonds can be spontaneously reduced on Si-H, forming covalent Si-S bonds in the presence of traces of water, and that this grafting can be catalyzed by electrochemical potential. Cyclic disulfide can be spontaneously reduced to form complete monolayers in 1 h, and the reduction can be catalyzed electrochemically to form full surface coverages within 15 min. In contrast, the kinetics of SAM formation of the cyclic disulfide molecule on Au was found to be three-fold slower than that on Si. It is also demonstrated that dilute thiol solutions can form monolayers on Si-H following oxidation to disulfides under ambient conditions; the supply of too much oxygen, however, inhibits SAM formation. The electron transfer kinetics of the Si-S-enabled SAMs on Si-H is comparable to that on Au, suggesting that Si-S contacts are electrically transmissive. We further demonstrate the prospect of this spontaneous disulfide reduction by forming a monolayer of protein azurin on a Si-H surface within 1 h. The direct reduction of disulfides on Si electrodes presents new capabilities for a range of fields, including molecular electronics, for which highly conducting SAM-electrode contacts are necessary and for emerging fields such as biomolecular electronics as disulfide linkages could be exploited to wire proteins between Si electrodes, within the context of the current Si-based technologies.
Collapse
Affiliation(s)
- Essam M Dief
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Yan B Vogel
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Chandramalika R Peiris
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Anton P Le Brun
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, New South Wales 2234, Australia
| | - Vinicius R Gonçales
- School of Chemistry, Australia Centre for NanoMedicine, ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Simone Ciampi
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Jeffrey R Reimers
- International Centre for Quantum and Molecular Structures, School of Physics, Shanghai University, Shanghai 200444, China
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| |
Collapse
|
11
|
Zalka D, Péter L. On the evolution and application of the concept of electrochemical polarization. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04682-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractThis paper yields an overview on the evolution of the concept of polarization applied to electrochemical systems, ranging from electrodes to cells. The historical discussion starts at the early phase of the development of electrochemistry when current-controlled measurements were possible only, and when the early definitions of polarization, depolarization and depolarizer were created. A number of contemporary handbooks, recommendations and other reference resources are listed in which these concepts are represented in various ways, from conservative definitions to attempts of redefining them. The traditional definitions are confronted with the everyday use of professional language, drawing attention to the fact that the widespread application of potential-controlled electrochemical measurements led to new meanings. Some suggestions are made that open room for the application of the term of polarization in accord with the modern methodologies, without compromising the traditional introduction of the term. Polarization-related phenomena in biological membranes are not dealt with in the present work.
Collapse
|
12
|
Nanofabrication Techniques in Large-Area Molecular Electronic Devices. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10176064] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.
Collapse
|
13
|
Jodat YA, Kiaee K, Vela Jarquin D, De la Garza Hernández RL, Wang T, Joshi S, Rezaei Z, de Melo BAG, Ge D, Mannoor MS, Shin SR. A 3D-Printed Hybrid Nasal Cartilage with Functional Electronic Olfaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1901878. [PMID: 32154068 PMCID: PMC7055567 DOI: 10.1002/advs.201901878] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/18/2019] [Indexed: 05/05/2023]
Abstract
Advances in biomanufacturing techniques have opened the doors to recapitulate human sensory organs such as the nose and ear in vitro with adequate levels of functionality. Such advancements have enabled simultaneous targeting of two challenges in engineered sensory organs, especially the nose: i) mechanically robust reconstruction of the nasal cartilage with high precision and ii) replication of the nose functionality: odor perception. Hybrid nasal organs can be equipped with remarkable capabilities such as augmented olfactory perception. Herein, a proof-of-concept for an odor-perceptive nose-like hybrid, which is composed of a mechanically robust cartilage-like construct and a biocompatible biosensing platform, is proposed. Specifically, 3D cartilage-like tissue constructs are created by multi-material 3D bioprinting using mechanically tunable chondrocyte-laden bioinks. In addition, by optimizing the composition of stiff and soft bioinks in macro-scale printed constructs, the competence of this system in providing improved viability and recapitulation of chondrocyte cell behavior in mechanically robust 3D constructs is demonstrated. Furthermore, the engineered cartilage-like tissue construct is integrated with an electrochemical biosensing system to bring functional olfactory sensations toward multiple specific airway disease biomarkers, explosives, and toxins under biocompatible conditions. Proposed hybrid constructs can lay the groundwork for functional bionic interfaces and humanoid cyborgs.
Collapse
Affiliation(s)
- Yasamin A. Jodat
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Department of Mechanical EngineeringStevens Institute of TechnologyHobokenNJ07030USA
| | - Kiavash Kiaee
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Department of Mechanical EngineeringStevens Institute of TechnologyHobokenNJ07030USA
| | - Daniel Vela Jarquin
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Instituto Tecnológico y de Estudios Superiores de MonterreyCalle del Puente #222 Col. Ejidos de Huipulco, Tlalpan C.P.14380MéxicoD.F.Mexico
| | - Rosakaren Ludivina De la Garza Hernández
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Instituto Tecnológico y de Estudios Superiores de MonterreyAv. Eugenio Garza Sada 2501 Sur, Tecnológico64849MonterreyN.L.Mexico
| | - Ting Wang
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- School of MedicineJiangsu UniversityZhenjiangJiangsu212013China
| | - Sudeep Joshi
- Department of Mechanical EngineeringStevens Institute of TechnologyHobokenNJ07030USA
| | - Zahra Rezaei
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Department of Chemical and Petroleum EngineeringSharif University of TechnologyAzadi Ave11365‐11155TehranIran
| | - Bruna Alice Gomes de Melo
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
- Department of Engineering of Materials and BioprocessesSchool of Chemical EngineeringUniversity of CampinasCampinasSão Paulo13083‐852Brazil
| | - David Ge
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
| | - Manu S. Mannoor
- Department of Mechanical EngineeringStevens Institute of TechnologyHobokenNJ07030USA
| | - Su Ryon Shin
- Division of Engineering in MedicineDepartment of MedicineHarvard Medical SchoolBrigham and Women's HospitalCambridgeMA02139USA
| |
Collapse
|
14
|
A rapid ultrasound-promoted Horner–Wadsworth–Emmons reaction for the preparation of ferrocene derivatives. Application to ferrocene-modified ITO electrodes. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
15
|
Jambrec D, Kayran YU, Schuhmann W. Controlling DNA/Surface Interactions for Potential Pulse‐Assisted Preparation of Multi‐Probe DNA Microarrays. ELECTROANAL 2019. [DOI: 10.1002/elan.201900233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daliborka Jambrec
- Analytical Chemistry – Center for Electrochemical Sciences (CES), Faculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| | - Yasin U. Kayran
- Analytical Chemistry – Center for Electrochemical Sciences (CES), Faculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry – Center for Electrochemical Sciences (CES), Faculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| |
Collapse
|
16
|
Hijazi H, Vacher A, Groni S, Lorcy D, Levillain E, Fave C, Schöllhorn B. Electrochemically driven interfacial halogen bonding on self-assembled monolayers for anion detection. Chem Commun (Camb) 2019; 55:1983-1986. [DOI: 10.1039/c8cc08856j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The concept of anion detection via reversible electrochemically driven charge-assisted halogen bonding in solution was transferred on the surface.
Collapse
Affiliation(s)
- Hussein Hijazi
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Antoine Vacher
- Univ Rennes, CNRS, ISCR Institut des Sciences Chimiques de Rennes – UMR 6226
- F-35000 Rennes
- France
| | - Sihem Groni
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR Institut des Sciences Chimiques de Rennes – UMR 6226
- F-35000 Rennes
- France
| | - Eric Levillain
- MOLTECH Anjou, UMR CNRS 6200, Univ d'Angers, 2 Bd Lavoisier
- F-49045 ANGERS Cedex
- France
| | - Claire Fave
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| | - Bernd Schöllhorn
- Laboratoire d’Electrochimie Moléculaire, UMR CNRS 7591, Université Paris Diderot
- F-75205 Paris Cedex 13
- France
| |
Collapse
|
17
|
Hammami A, Raouafi N, Mirsky VM. Electrically controlled Michael addition: Addressing of covalent immobilization of biological receptors. Biosens Bioelectron 2018; 121:72-79. [DOI: 10.1016/j.bios.2018.08.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 01/09/2023]
|
18
|
Steffenhagen M, Latus A, Trinh TMN, Nierengarten I, Lucas IT, Joiret S, Landoulsi J, Delavaux-Nicot B, Nierengarten JF, Maisonhaute E. A Rotaxane Scaffold Bearing Multiple Redox Centers: Synthesis, Surface Modification and Electrochemical Properties. Chemistry 2018; 24:1701-1708. [PMID: 29207203 DOI: 10.1002/chem.201705245] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Indexed: 12/24/2022]
Abstract
A rotaxane scaffold incorporating two dithiolane anchoring units for the modification of gold surfaces has been functionalized with multiple copies of a redox unit, namely ferrocene. Surface modification has been first assessed at the single molecule level by atomic force microscopy (AFM) and scanning tunneling microscopy (STM) imaging, while tip enhanced Raman spectroscopy (TERS) provided the local vibrational signature of the ferrocenyl subunits of the rotaxanes grafted onto the gold surface. Finally, oxidation of the redox moieties within a rotaxane scaffold grafted onto gold microelectrodes has been investigated by ultrafast cyclic voltammetry. Intramolecular electron hopping is indeed extremely fast in this system. Moreover, the kinetics of charge injection depends on the molecular coverage due to the influence of intermolecular contacts on molecular motions.
Collapse
Affiliation(s)
- Marie Steffenhagen
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, 75005, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR 7197, Laboratoire de Réactivité de Surfaces, 75005, Paris, France
| | - Alina Latus
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, 75005, Paris, France
| | - Thi Minh Nguyet Trinh
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
| | - Iwona Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
| | - Ivan T Lucas
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, 75005, Paris, France
| | - Suzanne Joiret
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, 75005, Paris, France
| | - Jessem Landoulsi
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7197, Laboratoire de Réactivité de Surfaces, 75005, Paris, France
| | - Béatrice Delavaux-Nicot
- Laboratoire de Chimie de Coordination du CNRS (UPR 8241), Université de Toulouse (UPS, INPT), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France
| | - Jean-François Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
| | - Emmanuel Maisonhaute
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8235, Laboratoire Interfaces et Systèmes Electrochimiques, 75005, Paris, France
| |
Collapse
|
19
|
On the decisive role of the sulfur-based anchoring group in the electro-assisted formation of self-assembled monolayers on gold. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.163] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
20
|
Marquez MD, Zenasni O, Jamison AC, Lee TR. Homogeneously Mixed Monolayers: Emergence of Compositionally Conflicted Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8839-8855. [PMID: 28562051 DOI: 10.1021/acs.langmuir.7b00755] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The ability to manipulate interfaces at the nanoscale via a variety of thin-film technologies offers a plethora of avenues for advancing surface applications. These include surfaces with remarkable antibiofouling properties as well as those with tunable physical and electronic properties. Molecular self-assembly is one notably attractive method used to decorate and modify surfaces. Of particular interest to surface scientists has been the thiolate-gold system, which serves as a reliable method for generating model thin-film monolayers that transform the interfacial properties of gold surfaces. Despite widespread interest, efforts to tune the interfacial properties using mixed adsorbate systems have frequently led to phase-separated domains of molecules on the surface with random sizes and shapes depending on the structure and chemical composition of the adsorbates. This feature article highlights newly emerging methods for generating mixed thin-film interfaces, not only to enhance the aforementioned properties of organic thin films, but also to give rise to interfacial compositions never before observed in nature. An example would be the development of monolayers formed from bidentate adsorbates and other unique headgroup architectures that provide the surface bonding stability necessary to allow the assembly of interfaces that expose mixtures of chains that are fundamentally different in character (i.e., either phase-incompatible or structurally dissimilar), producing compositionally "conflicted" interfaces. By also exploring the prior efforts to produce such homogeneously blended interfaces, this feature article seeks to convey the relationships between the methods of film formation and the overall properties of the resulting interfaces.
Collapse
Affiliation(s)
- Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - Oussama Zenasni
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| |
Collapse
|
21
|
Buron C, Groni S, Ségaud N, Mazerat S, Dragoe D, Fave C, Sénéchal-David K, Schöllhorn B, Banse F. Self-assembled monolayer formation of a (N 5)Fe(ii) complex on gold electrodes: electrochemical properties and coordination chemistry on a surface. Dalton Trans 2016; 45:19053-19061. [PMID: 27858029 DOI: 10.1039/c6dt03870k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A coordinatively unsaturated FeII complex bearing a pentadentate ligand (N,N',N'-tris(2-pyridyl-methyl)-1,2-diaminoethane) functionalized with a cyclic disulfide group has been prepared in order to graft reactive metal entities as self-assembled monolayers (SAMs) on gold electrodes. Prior to grafting, exogenous ligand exchange has been investigated by cyclic voltammetry (CV) in solution, showing that the nature of the first coordination sphere (N5)FeII-X (X = Cl-, OTf-, MeCN, acetone) can be tuned, thanks to the control of the chemical conditions. The FeII complex has been immobilized on gold electrodes by spontaneous (passive) adsorption as well as by an electro-assisted method. The resulting SAMs were characterised by XPS and AFM analyses. CV experiments implementing these SAMs as working electrodes showed that the first coordination sphere of the grafted FeII complex can be controlled by adjusting the chemical conditions, similarly to the studies in a homogeneous solution. Finally, the supported FeII complex proved to be reactive with superoxide generated at the electrode surface by reduction of dissolved dioxygen. Under the employed conditions, leaking of the metal complex was not observed.
Collapse
Affiliation(s)
- Charlotte Buron
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, Université Paris Saclay, CNRS, 91405, Orsay Cedex, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Haag AL, Toader V, Lennox RB, Grutter P. Selective in situ potential-assisted SAM formation on multi electrode arrays. NANOTECHNOLOGY 2016; 27:455501. [PMID: 27694698 DOI: 10.1088/0957-4484/27/45/455501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The selective modification of individual components in a biosensor array is challenging. To address this challenge, we present a generalizable approach to selectively modify and characterize individual gold surfaces in an array, in an in situ manner. This is achieved by taking advantage of the potential dependent adsorption/desorption of surface-modified organic molecules. Control of the applied potential of the individual sensors in an array where each acts as a working electrode provides differential derivatization of the sensor surfaces. To demonstrate this concept, two different self-assembled monolayer (SAM)-forming electrochemically addressable ω-ferrocenyl alkanethiols (C11) are chemisorbed onto independent but spatially adjacent gold electrodes. The ferrocene alkanethiol does not chemisorb onto the surface when the applied potential is cathodic relative to the adsorption potential and the electrode remains underivatized. However, applying potentials that are modestly positive relative to the adsorption potential leads to extensive coverage within 10 min. The resulting SAM remains in a stable state while held at potentials <200 mV above the adsorption potential. In this state, the chemisorbed SAM does not significantly desorb nor do new ferrocenylalkythiols adsorb. Using three set applied potentials provides for controlled submonolayer alkylthiol marker coverage of each independent gold electrode. These three applied potentials are dependent upon the specifics of the respective adsorbate. Characterization of the ferrocene-modified electrodes via cyclic voltammetry demonstrates that each specific ferrocene marker is exclusively adsorbed to the desired target electrode.
Collapse
Affiliation(s)
- Ann-Lauriene Haag
- Ernest Rutherford Physics Building, Department of Physics, McGill University, 3600 Rue University, Montreal, H3A 2T8, QC, Canada
| | | | | | | |
Collapse
|
23
|
Mars A, Parolo C, de la Escosura-Muñiz A, Raouafi N, Merkoçi A. Control of Electron-transfer in Immunonanosensors by Using Polyclonal and Monoclonal Antibodies. ELECTROANAL 2016. [DOI: 10.1002/elan.201500646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Abdelmoneim Mars
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra; 08193 Barcelona Spain
- Département de Chimie; Université de Tunis El-Manar, Faculté des Sciences, Campus universitaire de Tunis El-Manar; Tunis 2092 Tunisia
| | - Claudio Parolo
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra; 08193 Barcelona Spain
| | - Alfredo de la Escosura-Muñiz
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra; 08193 Barcelona Spain
| | - Noureddine Raouafi
- Département de Chimie; Université de Tunis El-Manar, Faculté des Sciences, Campus universitaire de Tunis El-Manar; Tunis 2092 Tunisia
| | - Arben Merkoçi
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra; 08193 Barcelona Spain
- ICREA; Barcelona, Catalonia Spain
| |
Collapse
|
24
|
Jambrec D, Conzuelo F, Estrada-Vargas A, Schuhmann W. Potential-Pulse-Assisted Formation of Thiol Monolayers within Minutes for Fast and Controlled Electrode Surface Modification. ChemElectroChem 2016. [DOI: 10.1002/celc.201600308] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daliborka Jambrec
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätstraße 150 D-44780 Bochum Germany
| | - Felipe Conzuelo
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätstraße 150 D-44780 Bochum Germany
| | - Arturo Estrada-Vargas
- Departamento de Ingenierías, CUTonalá; Universidad de Guadalajara; Av. Nuevo Periférico 555, Ejido San José Tatepozco 48525 Tonalá Jalisco México
| | - Wolfgang Schuhmann
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätstraße 150 D-44780 Bochum Germany
| |
Collapse
|
25
|
Capitao D, Sahli R, Raouafi N, Limoges B, Fave C, Schöllhorn B. Electro-assisted Deposition of Binary Self-Assembled 1,2-Dithiolane Monolayers on Gold with Predictable Composition. ChemElectroChem 2016. [DOI: 10.1002/celc.201600260] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dany Capitao
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Rihab Sahli
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
- Laboratoire de Chimie Analytique et d'Electrochimie; Département de Chimie, Faculté des Sciences de Tunis; Université El-Manar; 2092 Tunis El-Manar Tunisia
| | - Noureddine Raouafi
- Laboratoire de Chimie Analytique et d'Electrochimie; Département de Chimie, Faculté des Sciences de Tunis; Université El-Manar; 2092 Tunis El-Manar Tunisia
| | - Benoit Limoges
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Claire Fave
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| | - Bernd Schöllhorn
- Laboratoire d'Electrochimie Moléculaire, UMR CNRS 7591; Université Paris Diderot, Sorbonne Paris Cité, Bâtiment Lavoisier; 15 rue Jean-Antoine de Baïf 75205 Paris Cedex 13 France
| |
Collapse
|
26
|
Chemisorption Threshold of Thiol-based Monolayer on Copper: Effect of Electric Potential and Elevated Temperature. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
27
|
Zhang Z, Kim H, Noh J, Ahn Y, Son JY, Jang J. Thermal curing of a self-assembled monolayer at the nanoscale. NANOSCALE 2016; 8:1133-1139. [PMID: 26667063 DOI: 10.1039/c5nr06559c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
On fabrication by contact printing, a nanostructured self-assembled monolayer (SAM) of alkanethiol contains a substantial fraction of unbound molecules that are either inverted among other upright molecules or piled on top of the SAM. The molecular dynamics simulation in the present study demonstrates that thermal annealing cures these defects for a SAM island of octadecanethiol. The SAM island melted partially as a result of heating, so the unbound molecules that had piled on top of the SAM island penetrated down to make contact with the surface, and the inverted molecules flipped to achieve adsorption. With subsequent cooling, the packing of sulfur atoms and alignment of alkyl chains of the SAM island were recovered. The molecular pathways for the adsorption of the unbound molecules were unraveled. The transition state and activation energy, calculated for each pathway in the absence of annealing, showed that these defects are incurable without the help of annealing.
Collapse
Affiliation(s)
- Zhengqing Zhang
- Department of Nanoenergy Engineering, Pusan National University, Busan 609-735, South Korea.
| | - Hyojeong Kim
- Department of Nanoenergy Engineering, Pusan National University, Busan 609-735, South Korea.
| | - Jaegeun Noh
- Department of Chemistry and Institute of Nano Science and Technology, Hanyang University, Seoul 133-791, South Korea
| | - Yoonho Ahn
- Department of Applied Physics, Kyung Hee University, Yongin 446-701, South Korea
| | - Jong Yeog Son
- Department of Applied Physics, Kyung Hee University, Yongin 446-701, South Korea
| | - Joonkyung Jang
- Department of Nanoenergy Engineering, Pusan National University, Busan 609-735, South Korea.
| |
Collapse
|
28
|
Mars A, Argoubi W, Ben Aoun S, Raouafi N. Induced conformational change on ferrocenyl-terminated alkyls and their application as transducers for label-free immunosensing of Alzheimer's disease biomarker. RSC Adv 2016. [DOI: 10.1039/c5ra19328a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
ApoE Alzheimer's disease biomarker can be sensitively detected by a label-free platform using flexible ferrocene-terminated alkyl chains. The immunorecognition triggers conformational changes, which improve the rate constants of electron-transfer.
Collapse
Affiliation(s)
- Abdelmoneim Mars
- University of Tunis El-Manar
- Faculty of Science of Tunis
- Chemistry Department
- Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15)
- Campus Universitaire de Tunis El-Manar 2092
| | - Wicem Argoubi
- University of Tunis El-Manar
- Faculty of Science of Tunis
- Chemistry Department
- Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15)
- Campus Universitaire de Tunis El-Manar 2092
| | - Sami Ben Aoun
- Taibah University
- Faculty of Science
- Department of Chemistry
- Al-Madinah Al-Munawarah
- Saudi Arabia
| | - Noureddine Raouafi
- University of Tunis El-Manar
- Faculty of Science of Tunis
- Chemistry Department
- Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15)
- Campus Universitaire de Tunis El-Manar 2092
| |
Collapse
|
29
|
Saadaoui M, Braiek M, Jaffrezic-Renault N, Raouafi N. An ultrasensitive nanobiohybrid platform for glucose electrochemical biosensing based on ferrocenyl iminopropyl-modified silica nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra03779h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel nanobiohybrid platform based on ferrocenyl iminopropyl-modified silica nanoparticle conjugates (fap-SiNPs), entrapped in glucose oxidase (GOx) and bovine serum albumin cross-linked with glutaraldehyde, was developed.
Collapse
Affiliation(s)
- M. Saadaoui
- University of Tunis El-Manar
- Faculty of Sciences
- Department de Chemistry
- Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15)
- Campus universitaire de Tunis El-Manar
| | - M. Braiek
- University of Lyon
- Institute of Analytical Sciences
- 69000 Villeurbanne
- France
| | | | - N. Raouafi
- University of Tunis El-Manar
- Faculty of Sciences
- Department de Chemistry
- Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15)
- Campus universitaire de Tunis El-Manar
| |
Collapse
|
30
|
Godeau G, Darmanin T, Guittard F. Switchable and reversible superhydrophobic and oleophobic surfaces by redox response using covalent S–S bond. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
31
|
Argoubi W, Saadaoui M, Ben Aoun S, Raouafi N. Optimized design of a nanostructured SPCE-based multipurpose biosensing platform formed by ferrocene-tethered electrochemically-deposited cauliflower-shaped gold nanoparticles. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:1840-1852. [PMID: 26425435 PMCID: PMC4578399 DOI: 10.3762/bjnano.6.187] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/04/2015] [Indexed: 06/05/2023]
Abstract
The demand for on-site nanodevices is constantly increasing. The technology development for the design of such devices is highly regarded. In this work, we report the design of a disposable platform that is structured with cauliflower-shaped gold nanoparticles (cfAuNPs) and we show its applications in immunosensing and enzyme-based detection. The electrochemical reduction of Au(III) allows for the electrodeposition of highly dispersed cauliflower-shaped gold nanoparticles on the surface of screen-printed carbon electrodes (SPCEs). The nanostructures were functionalized using ferrocenylmethyl lipoic acid ester which allowed for the tethering of the ferrocene group to gold, which serves as an electrochemical transducer/mediator. The bioconjugation of the surface with anti-human IgG antibody (α-hIgG) or horseradish peroxidase (HRP) enzyme yields biosensors, which have been applied for the selective electrochemical detection of human IgG (hIgG) or H2O2 as model analytes, respectively. Parameters such as the number of sweeps, amount of charge generated from the oxidation of the electrodeposited gold, time of incubation and concentration of the ferrocene derivatives have been studied using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Selectivity and specificity tests have been also performed in the presence of potentially interfering substances to either hIgG or H2O2. Results showed that the devised immunosensor is endowed with good selectivity and specificity in the presence of several folds of competitive analytes. The enzyme-based platform showed a good catalytic activity towards H2O2 oxidation which predestined it to potential applications pertaining to enzymatic kinetics studies. The levels of hIgG in human serum and H2O2 in honey were successfully determined and served as assessment tools of the applicability of the platforms for real samples analysis.
Collapse
Affiliation(s)
- Wicem Argoubi
- University of Tunis El-Manar, Chemistry Department, Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15), campus universitaire de Tunis El-Manar 2092, Tunis, Tunisia
| | - Maroua Saadaoui
- University of Tunis El-Manar, Chemistry Department, Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15), campus universitaire de Tunis El-Manar 2092, Tunis, Tunisia
| | - Sami Ben Aoun
- Department of Chemistry, Faculty of Science, Taibah University, PO. Box 30002 Al-Madinah Al-Munawarah, Saudi Arabia
| | - Noureddine Raouafi
- University of Tunis El-Manar, Chemistry Department, Laboratory of Analytical Chemistry and Electrochemistry (LR99ES15), campus universitaire de Tunis El-Manar 2092, Tunis, Tunisia
| |
Collapse
|
32
|
|
33
|
Quan X, Heiskanen A, Tenje M, Boisen A. In-situ monitoring of potential enhanced DNA related processes using electrochemical quartz crystal microbalance with dissipation (EQCM-D). Electrochem commun 2014. [DOI: 10.1016/j.elecom.2014.08.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
34
|
Yu B, Jiang X, Yin J. Size-Tunable Nanosheets by the Crystallization-Driven 2D Self-Assembly of Hyperbranched Poly(ether amine) (hPEA). Macromolecules 2014. [DOI: 10.1021/ma500845e] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Bing Yu
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University Shanghai 200240, People’s Republic of China
| | - Xuesong Jiang
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University Shanghai 200240, People’s Republic of China
| | - Jie Yin
- School of Chemistry & Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University Shanghai 200240, People’s Republic of China
| |
Collapse
|
35
|
Serleti A, Salaj-Kosla U, Magner E. The spatial and sequential immobilisation of cytochrome c at adjacent electrodes. Chem Commun (Camb) 2013; 49:8395-7. [PMID: 23939373 DOI: 10.1039/c3cc44724c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two adjacent electrode surfaces were modified in a sequential manner with self-assembled thiol layers from the same solution using conditions (aqueous buffer at neutral pH) suitable for applications with proteins. A faradaic response was obtained from the redox protein, cytochrome c, independently immobilised at each surface.
Collapse
Affiliation(s)
- Alessandro Serleti
- Department of Chemical and Environmental Sciences & Materials and Surface Science Institute, University of Limerick, Limerick, Ireland.
| | | | | |
Collapse
|