Surfactant-associated electrochemical properties of ferrocene adsorbed on a glassy carbon electrode modified with multi-walled carbon nanotubes

Wu, Jinbo; Fu, Qiuming; Lu, Baoyi; Li, Hong; Xu, Zhenghe

doi:10.1016/j.tsf.2009.10.163

Cited by 9 publications

(6 citation statements)

References 35 publications

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“…The unique feature of TMTAA makes it a suitable candidate as tethering agent for biomolecule immobilization in biosensor applications [60]. Ferrocene functionalized CNT was also studied and electrochemical systems for biosensor applications [80,81,82]. Yang et al first reported the preparation of non-covalent nanohybrid of ferrocene functionalized SWCNT with enhanced electrochemical properties [62].…”

Section: Functionalization Of Carbon Nanotubesmentioning

confidence: 99%

Non-Covalent Functionalization of Carbon Nanotubes for Electrochemical Biosensor Development

Zhou

Fang

Ramasamy

2019

Sensors

260

127

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Carbon nanotubes (CNTs) have been widely studied and used for the construction of electrochemical biosensors owing to their small size, cylindrical shape, large surface-to-volume ratio, high conductivity and good biocompatibility. In electrochemical biosensors, CNTs serve a dual purpose: they act as immobilization support for biomolecules as well as provide the necessary electrical conductivity for electrochemical transduction. The ability of a recognition molecule to detect the analyte is highly dependent on the type of immobilization used for the attachment of the biomolecule to the CNT surface, a process also known as biofunctionalization. A variety of biofunctionalization methods have been studied and reported including physical adsorption, covalent cross-linking, polymer encapsulation etc. Each method carries its own advantages and limitations. In this review we provide a comprehensive review of non-covalent functionalization of carbon nanotubes with a variety of biomolecules for the development of electrochemical biosensors. This method of immobilization is increasingly being used in bioelectrode development using enzymes for biosensor and biofuel cell applications.

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Section: Functionalization Of Carbon Nanotubesmentioning

confidence: 99%

Non-Covalent Functionalization of Carbon Nanotubes for Electrochemical Biosensor Development

Zhou

Fang

Ramasamy

2019

Sensors

260

127

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“…Ferrocene on CNTs opens interesting venues in electronics applications . It has previously been adsorbed onto MWCNT-modified electrodes and studied via electrochemistry. , …”

Section: Introductionmentioning

confidence: 99%

Adsorption of Ferrocene on Carbon Nanotubes, Graphene, and Activated Carbon

Cluff

Blümel

2016

Organometallics

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Ferrocene could be adsorbed on activated carbon, carbon nanotube surfaces, graphite, and graphene in the absence of a solvent at room temperature in spite of its high melting point (174 °C). In each case only monolayers formed via self-adsorption and the transition to surplus polycrystalline material was abrupt, with no multiple layers occurring. Variable-temperature multinuclear solid-state NMR spectroscopy was applied to study the mobilities of the surface-adsorbed ferrocene molecules. It has been demonstrated that on favorable supports the major anisotropic interactions that usually broaden the solid-state NMR signals of polycrystalline and amorphous materials were reduced or completely eliminated due to the mobility of the adsorbed ferrocene. In favorable cases the chemical shift anisotropy (CSA) and the dipolar and quadrupolar interactions were reduced to a degree that allowed the recording of the spectra of the solid materials on a conventional solution NMR spectrometer.

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“…Furthermore, it has been shown that the use of surfactants alters the electrode-solution interface and subsequently inuences the electrochemical processes of reactive substances. [12][13][14] Thus, surfactants have been used successfully to improve the limits of detection of various analytes through a mechanism involving "synergistic adsorption", i.e., the possibility of improving the analyte adsorption on the electrode surface due to the presence of a surfactant lm, facilitating the electron transfer between analytes and the electrode. 15 Additionally, surfactants allow the immobilization of biomolecules or bio-inspired molecules through the formation of multiple surfactant layers which entrap biomolecules on the electrode surface.…”

Section: Introductionmentioning

confidence: 99%

A bio-inspired sensor based on surfactant film and Pd nanoparticles

Zapp

Souza

et al. 2013

Analyst

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A bio-inspired complex, [(bpbpmp)Fe(III)(m-OAc)(2)Cu(II)](ClO(4)), was combined with a zwitterionic surfactant (ImS3-14) stabilizing pre-formed palladium nanoparticles and coated on a glassy carbon electrode (GCE). This bio-inspired surfactant film was capable of catalyzing redox reactions of dihydroxybenzenes, thus allowing the simultaneous electrochemical quantification of CC and HQ in cigarette residue samples by square-wave voltammetry (SWV). The best experimental conditions were obtained using phosphate buffer solution (0.1 mol L(-1), pH 7.0), with 1.3 nmol of the bio-inspired complex, 0.15 μmol of the surfactant and 1.08 nmol of Pd. The best voltammetric parameters were: frequency 100 Hz, pulse amplitude 40 mV and step potential 8 mV. The limits of detection calculated from simultaneous curves were found to be 2.2 × 10(-7) and 2.1 × 10(-7) mol L(-1) for HQ and CC respectively.

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Surfactant-associated electrochemical properties of ferrocene adsorbed on a glassy carbon electrode modified with multi-walled carbon nanotubes

Cited by 9 publications

References 35 publications

Non-Covalent Functionalization of Carbon Nanotubes for Electrochemical Biosensor Development

Non-Covalent Functionalization of Carbon Nanotubes for Electrochemical Biosensor Development

Adsorption of Ferrocene on Carbon Nanotubes, Graphene, and Activated Carbon

A bio-inspired sensor based on surfactant film and Pd nanoparticles

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