Electron transfer and electrocatalytics of cytochrome c and horseradish peroxidase on DNA modified electrode

Song, Yonghai; Wan, Lingli; Wang, Yu; Zhao, Sucai; Hou, Haoqing; Wang, Li

doi:10.1016/j.bioelechem.2011.11.007

Cited by 22 publications

(10 citation statements)

References 20 publications

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“…where Q is the charge consumed in the CVs, n is the electron transfer number ( n =1 for DET of Cyt c 4), F is the Faraday constant ( F =96493 C mol −1 ) and A eff is the effective area of the electrode. The value of Γ was calculated to be 4.9×10 −11 mol cm −2 .…”

Section: Resultsmentioning

confidence: 99%

Direct Electrochemistry of Cytochrome c Based on Poly(diallyldimethylammonium Chloride)‐ Graphene Nanosheets/Gold Nanoparticles Hybrid Nanocomposites and Its Biosensing

et al. 2013

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A novel biosensor was developed by entrapping cytochrome c (Cyt c) in thin films of the room temperature ionic liquid (RTIL) containing nanocomposites of poly(diallyldimethylammonium chloride)-graphene nanosheets-gold nanoparticles (PDDA-Gp-AuNPs) at a 11-mercaptoundecanoic acid-6-mercapto-1-hexanol modified gold electrode. The synthesized PDDA-Gp-AuNPs hybrid nanocomposites were characterized by UV-vis spectroscopy, Raman spectroscopy, scanning electron microscopy and atomic force microscopy. The PDDA-Gp-AuNPs nanocomposites could increase the effective surface of the electrode, enhance the fixed amount of Cyt c on the electrode surface, promote the electron transfer and facilitate the catalytic activity of Cyt c. The RTIL could provide a biocompatible microenvironment to keep Cyt c biological activities, act as an effective mediator to immobilize a large number of Cyt c on the electrode and have good conductivity to improve electron transfer. Therefore, the resultant electrode exhibited good electrochemical performance and electrocatalytic activity. It could be used for electrochemical detection of H 2 O 2 with rapid response, high sensitivity, wide linear range and low detection limit, as well as good stability, repeatability and selectivity. The sensor might be promising for practical application.

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Section: Resultsmentioning

confidence: 99%

Direct Electrochemistry of Cytochrome c Based on Poly(diallyldimethylammonium Chloride)‐ Graphene Nanosheets/Gold Nanoparticles Hybrid Nanocomposites and Its Biosensing

et al. 2013

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“…The variability of the applicable materials is another of the most prominent advantages of this method. In addition to conventional PEs and block polymers, [13][14][15] various biomaterials, especially water-soluble proteins, have charged sites on their surface, can be self-assembled by electrostatic LbL adsorption, such as proteins, 16,17 DNA [18][19][20] and charged polysaccharides. 21,22 LbL self-assembly has emerged as a powerful tool for the immobilization of biomolecules with preserved bioactivity.…”

Section: Introductionmentioning

confidence: 99%

Layer-by-layer self-assembly in the development of electrochemical energy conversion and storage devices from fuel cells to supercapacitors

2012

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As one of the most effective synthesis tools, layer-by-layer (LbL) self-assembly technology can provide a strong non-covalent integration and accurate assembly between homo- or hetero-phase compounds or oppositely charged polyelectrolytes, resulting in highly-ordered nanoscale structures or patterns with excellent functionalities and activities. It has been widely used in the developments of novel materials and nanostructures or patterns from nanotechnologies to medical fields. However, the application of LbL self-assembly in the development of highly efficient electrocatalysts, specific functionalized membranes for proton exchange membrane fuel cells (PEMFCs) and electrode materials for supercapacitors is a relatively new phenomenon. In this review, the application of LbL self-assembly in the development and synthesis of key materials of PEMFCs including polyelectrolyte multilayered proton-exchange membranes, methanol-blocking Nafion membranes, highly uniform and efficient Pt-based electrocatalysts, self-assembled polyelectrolyte functionalized carbon nanotubes (CNTs) and graphenes will be reviewed. The application of LbL self-assembly for the development of multilayer nanostructured materials for use in electrochemical supercapacitors will also be reviewed and discussed (250 references).

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“…Using two different types of proteins (HRP and Cyt c) in conjugation with DNA, Yonghai et al fabricated an H 2 O 2 biosensor to mimic the charge transfer and electrocatalytic mechanism of two proteins in living organisms (Song et al 2012). According to their results, a faster charge transfer rate was observed for the bi-protein bio-interphase than the single protein biointerphase, demonstrating a synergetic effect to better the electron transfer.…”

Section: :6þmentioning

confidence: 99%

Fabrication of Electrochemical-Based Bioelectronic Device and Biosensor Composed of Biomaterial-Nanomaterial Hybrid

Park

Min

Sohn

et al. 2018

Advances in Experimental Medicine and Biology

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Electron transfer and electrocatalytics of cytochrome c and horseradish peroxidase on DNA modified electrode

Cited by 22 publications

References 20 publications

Direct Electrochemistry of Cytochrome c Based on Poly(diallyldimethylammonium Chloride)‐ Graphene Nanosheets/Gold Nanoparticles Hybrid Nanocomposites and Its Biosensing

Direct Electrochemistry of Cytochrome c Based on Poly(diallyldimethylammonium Chloride)‐ Graphene Nanosheets/Gold Nanoparticles Hybrid Nanocomposites and Its Biosensing

Layer-by-layer self-assembly in the development of electrochemical energy conversion and storage devices from fuel cells to supercapacitors

Fabrication of Electrochemical-Based Bioelectronic Device and Biosensor Composed of Biomaterial-Nanomaterial Hybrid

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