para-Sulfonatocalix[4]arene stabilized gold nanoparticles multilayers interfaced to electrodes through host-guest interaction for sensitive ErbB2 detection

Wang, Xingxin; Du, Dongshu; Dong, Haibin; Song, Sunfengda; Koh, Kwangnak; Chen, Hongxia

doi:10.1016/j.bios.2017.08.011

Cited by 16 publications

(2 citation statements)

References 48 publications

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“…They designed a layer-by-layer assembly of AuNPs on the surface of electrode by para -Sulfonatocalix[4]arene (pSC 4 ) modified AuNPs and 1,6-hexanediamine (HMD) conjugation through host-guest recognition. With enhanced electron migration and large specific surface area of AuNPs, this structure showed a detection limit of 0.5 ng·mL −1 for human epidermal growth factor receptor 2 (ErbB 2 ) (Figure 4) [84].…”

Section: Electrochemical Biosensorsmentioning

confidence: 99%

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Applications of Gold Nanoparticles in Non-Optical Biosensors

et al. 2018

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Due to their unique properties, such as good biocompatibility, excellent conductivity, effective catalysis, high density, and high surface-to-volume ratio, gold nanoparticles (AuNPs) are widely used in the field of bioassay. Mainly, AuNPs used in optical biosensors have been described in some reviews. In this review, we highlight recent advances in AuNP-based non-optical bioassays, including piezoelectric biosensor, electrochemical biosensor, and inductively coupled plasma mass spectrometry (ICP-MS) bio-detection. Some representative examples are presented to illustrate the effect of AuNPs in non-optical bioassay and the mechanisms of AuNPs in improving detection performances are described. Finally, the review summarizes the future prospects of AuNPs in non-optical biosensors.

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Section: Electrochemical Biosensorsmentioning

confidence: 99%

“…Schematic of pSC 4 monolayer and pSC 4 -gold nanoparticles (AuNPs) layer-by-layer signal amplification on the electrode surface. Reproduced with permission from [84]. Elsevier, 2018.…”

Section: Figurementioning

confidence: 99%

Applications of Gold Nanoparticles in Non-Optical Biosensors

et al. 2018

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Cucurbituril‐Manipulated Supramolecular Electrodes for Highly Active and Stable (Photo)electrocatalytic Oxidation Reactions

Jiang,

Zhang,

Yin

et al. 2024

Adv Funct Materials

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The robust immobilization and activity regulation of molecular catalysts on solid electrodes have remained persistent challenges in catalysis. Herein, cucurbituril (CB[7]) acts is first demonstrated as a bifunctional medium to firmly immobilize molecular catalyst CoTMPyP onto various metal oxide electrodes, including TiO2, BiVO4, α‐Fe2O3, and WO3, through host‐guest and electrostatic interactions. This approach not only secures stable attachment of the catalyst but also optimizes its electronic structure and catalytic activity. The CB[7]‐mediated supramolecular electrodes exhibit exceptional performance in electrocatalytic oxygen evolution reaction (OER), ethanol oxidation reaction, hydrazine oxidation reaction, and photoelectrocatalytic water oxidation. For instance, TiO2‐CB[7]‐CoTMPyP electrode achieves a turnover frequency (TOF) of 5.30 s−1 at an overpotential of 600 mV for OER, and BiVO4‐CB[7]‐CoTMPyP photoanode delivers a water oxidation photocurrent density of 6.00 mA cm−2 at 1.23 V versus RHE under simulated solar irradiation. Mechanistic studies reveal CB[7] plays a critical role beyond merely serving as a linker: it enhances charge accumulation around the cobalt sites, promotes reactants adsorption at these sites, reduces reaction energy barrier, and accelerates charge transfer rate, thereby significantly boosting catalytic activity. This work provides a groundbreaking pathway for the design and fabrication of cost‐effective, high‐performance molecular‐based electrodes for (photo)electrocatalytic reactions.

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Recent Trends in Electrochemical Sensors for Vital Biomedical Markers Using Hybrid Nanostructured Materials

et al. 2020

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This work provides a succinct insight into the recent developments in electrochemical quantification of vital biomedical markers using hybrid metallic composite nanostructures. After a brief introduction to the biomarkers, five types of crucial biomarkers, which require timely and periodical monitoring, are shortlisted, namely, cancer, cardiac, inflammatory, diabetic and renal biomarkers. This review emphasizes the usage and advantages of hybrid nanostructured materials as the recognition matrices toward the detection of vital biomarkers. Different transduction methods (fluorescence, electrophoresis, chemiluminescence, electrochemiluminescence, surface plasmon resonance, surface‐enhanced Raman spectroscopy) reported for the biomarkers are discussed comprehensively to present an overview of the current research works. Recent advancements in the electrochemical (amperometric, voltammetric, and impedimetric) sensor systems constructed with metal nanoparticle‐derived hybrid composite nanostructures toward the selective detection of chosen vital biomarkers are specifically analyzed. It describes the challenges involved and the strategies reported for the development of selective, sensitive, and disposable electrochemical biosensors with the details of fabrication, functionalization, and applications of hybrid metallic composite nanostructures.

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para-Sulfonatocalix[4]arene stabilized gold nanoparticles multilayers interfaced to electrodes through host-guest interaction for sensitive ErbB2 detection

Cited by 16 publications

References 48 publications

Applications of Gold Nanoparticles in Non-Optical Biosensors

Applications of Gold Nanoparticles in Non-Optical Biosensors

Cucurbituril‐Manipulated Supramolecular Electrodes for Highly Active and Stable (Photo)electrocatalytic Oxidation Reactions

Recent Trends in Electrochemical Sensors for Vital Biomedical Markers Using Hybrid Nanostructured Materials

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