Novel carbon materials in biosensor systems

Sotiropoulou, Sofia; Gavalas, Vasilis G.; Vamvakaki, Vicky; Chaniotakis, Nikos A.

doi:10.1016/s0956-5663(02)00183-5

Cited by 225 publications

(100 citation statements)

References 14 publications

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“…The change in resistance could reach as high as 900% when the concentration was varied by only 1 mM. As stated in previous work, [11] non-activated porous carbon with a resistance of 25 Vm had a sensitivity to H 2 O 2 of 11.40 mA mM À1 . Compared with the reported work, the fabricated HC-600-1 materials with hierarchical structure as well as the facile synthesis advantages make it very promising for C-PET application in wide liquid concentration detections.…”

Section: Liquid Detection Ability Of Hc-petsupporting

confidence: 63%

“…For both fields, porous conductive carbon has proven to be a highly stable and reproducible matrix for the fabrication of sensors. [10] The high conductivity meets the demand for the electrochemical signal transduction, [11] while the open channels of hierarchical nanostructure, along with the continuously conductive framework, provide a relatively short diffusion path. [12,13] It was suggested that the hydrophilicity through surface modification can increase in sensitivity under liquid solution [14] due to better liquid-solid contact, which can be also achieved by the macroscale roughness.…”

Section: Introductionmentioning

confidence: 99%

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A Hierarchically Porous Carbon Fabric for Highly Sensitive Electrochemical Sensors

Yuan

Cho²,

Lee³

et al. 2017

Adv Eng Mater

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The hierarchically porous carbon fabrics with controlled conductivity and hydrophilicity have been fabricated by dual templating method of soft templates nested on hard templates. A non‐woven fabric coated with a solution of F127/resol has been carbonized for the synthesis of both macro‐porous structures of 10–15 µm in diameter having meso‐porous carbon structures of 4–6 nm, respectively. After carbonization treatment, not only conductivity is significantly improved, the hierarchically porous carbon also shows superhydrophilicity or water‐absorbing nature due to mild hydrophilic material and its dual scale roughness. The porous carbon becomes conductive with resistivity widely tuned from 5.4 × 103 Ωm to 3.1 × 10−3 Ωm by controlling the carbonization temperature. As the increased wettability for organic liquids could lead organic molecules deep into carbonized fabrics, the sensitivity of hierarchically porous carbon fabrics benefits the detection for methanol(CH3OH) or hydrogen peroxide (H2O2). This new design concept of hierarchically porous structures having the multi‐functionality of high wettability and conductivity can be highly effective for electroanalytical sensors.

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Section: Liquid Detection Ability Of Hc-petsupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

A Hierarchically Porous Carbon Fabric for Highly Sensitive Electrochemical Sensors

Yuan

Cho²,

Lee³

et al. 2017

Adv Eng Mater

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“…Electrodes and immobilization matrices in biosensors are commonly made of different carbon based materials such as glassy carbon, graphite, carbon paste, carbon fibres, porous carbon and carbon spheres [15][16][17] due to these materials' wide potential window, rich surface chemistry, chemical inertness and low cost. 18 The main drawback of carbon electrodes are slow electron transfer rates observed compared to those observed at metal electrodes but these can be improved by modification of the electrode surface.…”

mentioning

confidence: 99%

Manganese Dioxide Graphite Composite Electrodes: Application to the Electroanalysis of Hydrogen Peroxide, Ascorbic Acid and Nitrite

et al. 2007

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“…and immobilization methods have been used to fabricate electrochemical, optical, mass based transducer systems for fabrication of biosensors [14]. Inert metals, such as platinum or gold and carbon based materials, have been commonly used as electrochemical transducers for biosensors [15]. The low cost carbon paste is regularly used as the electrode material because of simple construction, low background current and ability for surface regeneration.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide based Label Free Ultrasensitive Immunosensor for Lung Cancer Biomarker, hTERT

Choudhary¹

2013

J Biosens Bioelectron

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Significance of ResearchUnavailability of apposite diagnostic test capable of monitoring early stage progression/relapse of lung cancer is related to its high mortality rate wordwide. We report for the first time detection of lung cancer biomarker hTERT (human telomerase reverse transcriptase), using anti-hTERT for fabrication of graphene oxide (a low cost unique multifunctional material) based immunosensor in spiked sputum samples in the dynamic detection range of 100 fg mL -1 -10 ng mL -1 in 30 s exposure time. The easy fabrication of above said electrochemical immunosensor warrants the development of low cost and non invasive diagnostics (first and second stages) for lung cancer.

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Novel carbon materials in biosensor systems

Cited by 225 publications

References 14 publications

A Hierarchically Porous Carbon Fabric for Highly Sensitive Electrochemical Sensors

A Hierarchically Porous Carbon Fabric for Highly Sensitive Electrochemical Sensors

Manganese Dioxide Graphite Composite Electrodes: Application to the Electroanalysis of Hydrogen Peroxide, Ascorbic Acid and Nitrite

Graphene Oxide based Label Free Ultrasensitive Immunosensor for Lung Cancer Biomarker, hTERT

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