Electrochemical interface based on polydopamine and gold nanoparticles/reduced graphene oxide for impedimetric detection of lung cancer cells

Linh, Nguyen Dieu; Huyen, Nguyen Thi Trang; Dang, Nguyen Hai; Piro, Benoı̂t; Thu, Vũ Thị

doi:10.1039/d3ra00793f

Cited by 11 publications

(6 citation statements)

References 45 publications

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“…In general, the presence of AuNPs enhances the electron transfer rate for the redox probe, which is clearly illustrated in Figure . Our results agree with reported works that highlight the positive influence of AuNPs in decreasing R ct on electrodes modified with nonconductive polymers, , such as PDA.…”

Section: Resultssupporting

confidence: 93%

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Rocha,

de Oliveira,

Bettini

et al. 2023

ACS Meas. Sci. Au

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Electrochemical paper-based analytical devices represent an important platform for portable, low-cost, affordable, and decentralized diagnostics. For this kind of application, chemical functionalization plays a pivotal role to ensure high clinical performance by tuning surface properties and the area of electrodes. However, controlling different surface properties of electrodes by using a single functionalization route is still challenging. In this work, we attempted to tune the wettability, chemical composition, and electroactive area of carbon-paper-based devices by thermally treating polydopamine (PDA) at different temperatures. PDA films were deposited onto pyrolyzed paper (PP) electrodes and thermally treated in the range of 300−1000 °C. After deposition of PDA, the surface is rich in nitrogen and oxygen, it is superhydrophilic, and it has a high electroactive area. As the temperature increases, the surface becomes hydrophobic, and the electroactive area decreases. The surface modifications were followed by Raman, X-ray photoelectron microscopy (XPS), laser scanning confocal microscopy (LSCM), contact angle, scanning electron microscopy (SEM-EDS), electrical measurements, transmission electron microscopy (TEM), and electrochemical experiments. In addition, the chemical composition of nitrogen species can be tuned on the surface. As a proof of concept, we employed PDA-treated surfaces to anchor [AuCl 4 ] − ions. After electrochemical reduction, we observed that it is possible to control the size of the nanoparticles on the surface. Our route opens a new avenue to add versatility to electrochemical interfaces in the field of paper-based electrochemical biosensors.

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Section: Resultssupporting

confidence: 93%

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Rocha,

de Oliveira,

Bettini

et al. 2023

ACS Meas. Sci. Au

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show abstract

“…Linh developed an electrochemical sensor based on polyamine junction alloy nanoparticles and reduced graphene oxide (PDA/AuNPs/rGO) for the detection of lung cancer cells. 148 Gold nanoparticles (about 75 nm) are dispersed on rGO materials, which are pre-electrodeposited onto disposable fluorine-doped tin oxide electrodes. The coordination between gold and carbon materials enhances the mechanical stability of this electrochemical interface in some way.…”

Section: Cancer Cell Detectionmentioning

confidence: 99%

Recent advances in biological molecule detection based on a three-dimensional graphene structure

Yin,

Yang,

et al. 2024

Analyst

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“…The reduction of Pt precursors in situ , at the expense of certain carrier carbon atoms, can effectively minimize agglomeration of the produced Pt nanoparticles. [24,25] Furthermore, the Pt atom clusters on the GO surface are 'embedded' on the GO surface without affecting the GO structure. This efficiently preserves the topological properties of GO, including high dispersion and specific surface area, which is critical for preserving the good catalytic performance of Pt catalysts.…”

Section: Background and Originality Contentmentioning

confidence: 99%

One-Step Preparation of High-Quality Platinum Nanocatalyst Supported on Graphene Oxide

2024

Preprint

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In this paper, we propose and implement an in situ direct reduction reaction of K2PtCl6 precursor under mild reaction conditions using topotaxial reaction and the reducbility of graphene oxide. The reduced product platinum atom clusters are intercalated onto the GO surface, resulting in platinum nanocatalyst. The structure, content, and morphology of Pt/GO composites are studied using X-ray dif-fraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS), among other methods. It has been demonstrated that Pt4+ ions in the K2PtCl6 precursor are reduced to Pt0 atoms under moderate reaction conditions, which are equally distributed across the GO surface in the form of atom clusters with an average particle size of 10 nm. The platinum nanocluster has a conventional face-centered cubic crystal structure, with Pt crystal planes (111), (200), (220), and (311) etc.

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Electrochemical interface based on polydopamine and gold nanoparticles/reduced graphene oxide for impedimetric detection of lung cancer cells

Abstract: Non-invasive approaches for monitoring therapy processes in cancer patients at late stages is truly needed.

Cited by 11 publications

References 45 publications

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Tuning the Chemical and Electrochemical Properties of Paper-Based Carbon Electrodes by Pyrolysis of Polydopamine

Recent advances in biological molecule detection based on a three-dimensional graphene structure

One-Step Preparation of High-Quality Platinum Nanocatalyst Supported on Graphene Oxide

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