Amperometric Detection of Glucose Using a Conjugated Polyelectrolyte Complex with Single-Walled Carbon Nanotubes

Pang, Xin; Imin, Patigul; Zhitomirsky, Igor; Adronov, Alex

doi:10.1021/ma101862b

Cited by 65 publications

(60 citation statements)

References 68 publications

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“…The introduction of ssDNA significantly enhanced the current signal to as high as 20–30% versus 0.1% for the bare control CNT device with the same exposure dose [ 257 ]. Pang et al used a cationic polythiophene as the wrapping polymer, providing the binding sites for glucose oxidase and achieving a highly sensitive amperometric biosensor for glucose [ 258 ]. Polymer-wrapped CNTs can provide a better biocompatibility compared to the CNTs having a bare surface.…”

Section: Functions Of Polymer-wrapped Cntsmentioning

confidence: 99%

Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants

Fujigaya

Nakashima

2015

Science and Technology of Advanced Materials

305

215

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Carbon nanotubes (CNTs) have been recognized as a promising material in a wide range of applications from biotechnology to energy-related devices. However, the poor solubility in aqueous and organic solvents hindered the applications of CNTs. As studies have progressed, the methodology for CNT dispersion was established. In this methodology, the key issue is to covalently or non-covalently functionalize the surfaces of the CNTs with a dispersant. Among the various types of dispersions, polymer wrapping through non-covalent interactions is attractive in terms of the stability and homogeneity of the functionalization. Recently, by taking advantage of their stability, the wrapped-polymers have been utilized to support and/or reinforce the unique functionality of the CNTs, leading to the development of high-performance devices. In this review, various polymer wrapping approaches, together with the applications of the polymer-wrapped CNTs, are summarized.

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Section: Functions Of Polymer-wrapped Cntsmentioning

confidence: 99%

Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants

Fujigaya

Nakashima

2015

Science and Technology of Advanced Materials

305

215

View full text Add to dashboard Cite

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“…Such targeted coupling strategies enable the precise control of the biomolecule's orientation. However, it is difficult for the biomolecules to maintain enzyme activity due to the harsh treatment by toxic chemicals involved in the crosslinking process [82][83][84][85].…”

Section: Biosensorsmentioning

confidence: 99%

Research Progress on Conducting Polymer-Based Biomedical Applications

2019

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Conducting polymers (CPs) have attracted significant attention in a variety of research fields, particularly in biomedical engineering, because of the ease in controlling their morphology, their high chemical and environmental stability, and their biocompatibility, as well as their unique optical and electrical properties. In particular, the electrical properties of CPs can be simply tuned over the full range from insulator to metal via a doping process, such as chemical, electrochemical, charge injection, and photo-doping. Over the past few decades, remarkable progress has been made in biomedical research including biosensors, tissue engineering, artificial muscles, and drug delivery, as CPs have been utilized as a key component in these fields. In this article, we review CPs from the perspective of biomedical engineering. Specifically, representative biomedical applications of CPs are briefly summarized: biosensors, tissue engineering, artificial muscles, and drug delivery. The motivation for use of and the main function of CPs in these fields above are discussed. Finally, we highlight the technical and scientific challenges regarding electrical conductivity, biodegradability, hydrophilicity, and the loading capacity of biomolecules that are faced by CPs for future work. This is followed by several strategies to overcome these drawbacks.

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“…Similar shift of Raman peaks to higher frequency for MWCNTs after noncovalent functionalization has been reported in many previous literatures, which was attributed to charge-transfer and p-p stacking interactions between the polymer and MWCNTs. 39,40 Considering the electron acceptor nature of carbon nanotubes and electron donar nature of carbazole groups in P(GMA-co-VCz), the charge transfer between P(GMA-co-VCz) and the MWCNTs is quite possible, which increases the energy needed for vibrations and shifts the Raman band to a higher frequency. 41 The relative intensity between the D-and the G-bands is known to be a good indicator of the quantity of structural defects.…”

Section: Dispersion Of Mwcnts With P(gma-co-vcz) and Their Interactionsmentioning

confidence: 99%

Noncovalent functionalization of carbon nanotube using poly(vinylcarbazole)‐based compatibilizer for reinforcement and conductivity improvement in epoxy composite

Liu

Chen

et al. 2017

J of Applied Polymer Sci

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A new compatibilizer [P(GMA‐co‐VCz) copolymer] containing carbazole moiety and reactive epoxide group, which can functionalize multiwalled carbon nanotubes (MWCNTs) for making superior epoxy composites, was prepared by a simple one‐pot free radical polymerization. The designed compatibilizer could noncovalently functionalize multiwalled carbon nanotube (MWCNTs) via π‐π interaction as evidenced from fluorescence, Raman, and FTIR spectra analysis, and efficiently disperse MWCNTs in organic solvents. TEM images suggest a good wrapping of P(GMA‐co‐VCz) on MWCNTs surface. P(GMA‐co‐VCz) functionalized MWCNTs were more homogeneously dispersed in epoxy matrix than the case without compatibilizer, indicating that the compatibilizer improves the compatibility between MWCNTs and epoxy resin. In addition, the presence of epoxide groups in compatibilizer could generate covalent bonds with the epoxy matrix and improve the interface interaction between MWCNTs and epoxy matrix. As a result, mechanical and electrical properties of the epoxy composites with compatibilizer were largely improved as compared with those of composites without compatibilizer. The addition of as little as 0.15 wt % of MWCNTs to epoxy matrix affords a great increase of 40% in storage modulus and 52.5% in elongation at break. Furthermore, a sharp decrease of almost 9 orders of magnitude in volume resistivity of epoxy composite is observed. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45022.

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Amperometric Detection of Glucose Using a Conjugated Polyelectrolyte Complex with Single-Walled Carbon Nanotubes

Cited by 65 publications

References 68 publications

Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants

Non-covalent polymer wrapping of carbon nanotubes and the role of wrapped polymers as functional dispersants

Research Progress on Conducting Polymer-Based Biomedical Applications

Noncovalent functionalization of carbon nanotube using poly(vinylcarbazole)‐based compatibilizer for reinforcement and conductivity improvement in epoxy composite

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