Development of an Electrochemical Sensor Based on LbL Films of Pt Nanoparticles and Humic Acid

Santos, Monalisa dos; Wrobel, Ellen C.; Santos, Vagner dos; Quináia, Sueli Pércio; Fujiwara, Sérgio Toshio; Garcia, Jarem Raul; Pessôa, Christiana Andrade; Scheffer, Elizabeth W. O.; Wohnrath, Karen

doi:10.1149/2.1001609jes

Cited by 9 publications

(2 citation statements)

References 58 publications

(112 reference statements)

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“…PtNPs incorporated into the inorganic, positively-charged polymer 3-n-propylpyridinium silsesquioxane (PtSiPy + ) were combined, using the LbL method, with a natural polymer-humic acid to obtain a multilayer film sensitive to 17α-ethynylestradiol [53].…”

Section: Me or Meo Nps-pe As A Layermentioning

confidence: 99%

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Rončević

Krivić

Buljac

et al. 2020

Sensors

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The development of sensing coatings, as important sensor elements that integrate functionality, simplicity, chemical stability, and physical stability, has been shown to play a major role in electrochemical sensing system development trends. Simple and versatile assembling procedures and scalability make polyelectrolytes highly convenient for use in electrochemical sensing applications. Polyelectrolytes are mainly used in electrochemical sensor architectures for entrapping (incorporation, immobilization, etc.) various materials into sensing layers. These materials can often increase sensitivity, selectivity, and electronic communications with the electrode substrate, and they can mediate electron transfer between an analyte and transducer. Analytical performance can be significantly improved by the synergistic effect of materials (sensing material, transducer, and mediator) present in these composites. As most reported methods for the preparation of polyelectrolyte-based sensing layers are layer-by-layer and casting/coating methods, this review focuses on the use of the latter methods in the development of electrochemical sensors within the last decade. In contrast to many reviews related to electrochemical sensors that feature polyelectrolytes, this review is focused on architectures of sensing layers and the role of polyelectrolytes in the development of sensing systems. Additionally, the role of polyelectrolytes in the preparation and modification of various nanoparticles, nanoprobes, reporter probes, nanobeads, etc. that are used in electrochemical sensing systems is also reviewed.

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Section: Me or Meo Nps-pe As A Layermentioning

confidence: 99%

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Rončević

Krivić

Buljac

et al. 2020

Sensors

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“…Layer-by-layer (LbL) self-assembly method is a useful and versatile technic to fabricate functional molecular assemblies with welldefined architectures. 26,27 Poly(diallyldimethylammonium chloride) (PDDA) is a positively charged polyelectrolyte, and the formation of π bond between PDDA and carbon nanotubes thereby improves the dispersibility of carbon nanotubes in water. [28][29][30] In this paper, we fabricate a glucose sensor with DMAPS, PDDA, CNTs, GOx and Graphene via LBL self-assembling technique.…”

mentioning

confidence: 99%

Self-Assembling of Electrochemical Glucose Biosensor with Bacteriostatic Materials via Layer-by-Layer Method

Gao

Luo

Zhang

et al. 2017

J. Electrochem. Soc.

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Poly-diallyl-dimethyl-ammonium chloride (PDDA) solution was used to disperse carbon nanotubes (CNTs) to form a stable PDDACNTs aqueous dispersion. The negatively charged glucose oxidase (GOx) and positively charged PDDA-CNTs composite were used to prepare multilayer biosensing films on glassy carbon electrodes (GCE) via layer-by-layer (LBL) self-assembly technique. The optimum number of layers on GCE was 4. A mixture of 3-dimethyl (methacryloyloxyethyl) ammonium propane sulfonate (DMAPS) and Graphene (GR) was dropped on the multilayer films to prepare a bacteriostatic glucose biosensor. The results show that CNTs could evenly disperse in the PDDA films and the multilayer PDDA-CNTs films can significantly improve the catalytic current response toward glucose (Glu). The biosensor could detect glucose linearly from 16.5 to 214. Electrochemical biosensors which utilize immobilized oxidase [1][2][3][4][5][6] or metal/metal oxide 7-10 to catalyze the oxidation of target analyte, could respond to the changes of concentration of the analyte, and output electrical signal with some disciplines. It can be used to determine biological, clinical, or environmental substances.11-13 Many works have been carried out to achieve high biosensing performance. 14-17However, less research has been done about the bacteriostatic electrochemical glucose biosensor.Antimicrobial or bacteriostatic material has been widely used in industries such as textile, food fermentation and medical device industry. 18,19 In the process of bio-fermentation, the detection of various biochemical parameters (biomass, cell activity, substrate, nutrition, products and metabolites) forms the basis of controlling process of the fermentation. 20 The growth rate of micro-organism can be monitored by the consumption of glucose. Consequently, the abnormal phenomenon of fermentation process can be forecasted by the timely detection of glucose.21 However, bacterium can be easily adsorbed on the surface of the glucose sensors to form a bio-film. The bio-film can block the substrate close to the electrode, and the accuracy of the detection can be affected. 22 In these cases, it is especially necessary to use antimicrobial or bacteriostatic glucose biosensors. But there are very few studies reporting the antimicrobial or bacteriostatic electrochemical glucose biosensor. In this paper, a bacteriostatic film is built on GCE via layer-by-layer (LbL) self-assembly method and used to construct a glucose sensor.It is generally known that chemical compounds contain quaternized ammonium groups and that zwitterionic sulfopropylbetaine shows bacteriostatic or antimicrobial properties, 23 besides the zwitterionic materials show outstanding protein resistance performance. 24,25 A typical sulfobetaine, 3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate (DMAPS) (Scheme 1), which contains a sulfonate group and a quarternized ammonium separated by an alkyl spacer, has outstanding antimicrobial properties.Layer-by-layer (LbL) self-assembly method is a useful and versatile tech...

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A highly selective nickel-aluminum layered double hydroxide nanostructures based electrochemical sensor for detection of pentachlorophenol

Khan,

Shaikh,

Al Souwaileh

et al. 2024

Arabian Journal of Chemistry

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Development of an Electrochemical Sensor Based on LbL Films of Pt Nanoparticles and Humic Acid

Cited by 9 publications

References 58 publications

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Self-Assembling of Electrochemical Glucose Biosensor with Bacteriostatic Materials via Layer-by-Layer Method

A highly selective nickel-aluminum layered double hydroxide nanostructures based electrochemical sensor for detection of pentachlorophenol

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