Layer-by-layer assembled multilayer films of reduced graphene oxide/gold nanoparticles for the electrochemical detection of dopamine

Shi, Liu; Yan, Jun; He, Guangwu; Zhong, Dandan; Chen, Jiaxing; Shi, Lei; Zhou, Xuemin; Jiang, Huijun

doi:10.1016/j.jelechem.2012.03.007

Cited by 133 publications

(63 citation statements)

References 40 publications

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“…Furthermore, the HRG/Au based nanocomposites have been applied as FET (field effect transistor) biosensors for the detection of proteins. 533,534 The FET biosensor was fabricated by suspending thermally reduced graphene oxide (TRG) sheets above the substrates across the gold electrode. When the protein was introduced, it induced changes in the electrical characteristics of the device, which were investigated by FET and direct current measurements.…”

Section: Biosensorsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

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Section: Biosensorsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

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“…It is an advantage of the Con A-based protocol that glyco-enzymes equipped with intrinsic hydrocarbon chains, such as glucose oxidase (GOx) and horseradish peroxidase (HRP), can be used directly in this protocol without labeling. 34 Thus, a variety of materials are currently being used as building blocks for LbL films, including synthetic polymers and biopolymers, organic dyes, 35 host-guest compounds, 36 metal nanoparticles, 37 and carbon nanotubes. 38…”

Section: ·3 Biological Affinity-based Lbl Filmsmentioning

confidence: 99%

Layer-by-layer Thin Films and Microcapsules for Biosensors and Controlled Release

2012

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We present an overview of the preparation and properties of layer-by-layer (LbL) deposited thin films and microcapsules in relation to their use in the development of biosensors and controlled release systems. Enzyme biosensors can be constructed by immobilizing enzymes on the surface of electrodes by LbL deposition without loss of their catalytic activity. In addition to synthetic polymers, binding proteins, such as avidin and lectin, are also used for constructing LbL films through avidin-biotin and lectin-sugar interactions. The performance characteristics of LbL film-based biosensors can be tuned by controlling the number of layers and by the choice of film components. The permeability of polyelectrolyte LbL films to ions and molecules is discussed in relation to the use of the films for eliminating interference in biosensors. The possible use of polysaccharide LbL film-coated electrodes for the construction of biosensors is highlighted, and examples of LbL film-and microcapsule-based optical sensors are described. We then focus on the use of LbL films and microcapsules as vehicles for controlled release, in particular on recent progress in the controlled release of insulin from LbL films and microcapsules. LbL films composed of insulin and polymers are sensitive to environmental pH, and release insulin in response to pH changes, suggesting that insulin LbL films can be used in the development of orally administered insulin. The construction of glucose-dependent insulin release systems using LbL insulin microcapsules functionalized with phenylboronic acid, lectin, and glucose oxidase is also examined.

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“…Dendrimers labeled with metallic complexes show redox activity along with interesting material properties, which can be controlled by appropriate functionalization. Consequently, such molecules have been investigated for usage in nanoscale electric devices [17] or for metal nanoparticle encapsulation [18,19]. Adsorption-desorption processes of redox active macromolecules [17], their modification with metal cation precursors [18] or the interaction between redox active sites spatially distributed within the macromolecule [20,21] are examples of electrochemical properties of dendrimers that may conveniently be explored via CVs.…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Electrochemical techniques for investigating redox active macromolecules

Izquierdo

Kranz

2016

European Polymer Journal

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Layer-by-layer assembled multilayer films of reduced graphene oxide/gold nanoparticles for the electrochemical detection of dopamine

Cited by 133 publications

References 40 publications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Layer-by-layer Thin Films and Microcapsules for Biosensors and Controlled Release

Electrochemical techniques for investigating redox active macromolecules

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