A graphenic and potentiometric sensor for monitoring the growth of bacterial biofilms

Poma, Noemi; Vivaldi, Federico; Bonini, Andrea; Salvo, Pietro; Kirchhain, Arno; Melai, Bernardo; Bottai, Daria; Tavanti, Arianna; Francesco, Fabio Di

doi:10.1016/j.snb.2020.128662

Cited by 22 publications

(11 citation statements)

References 87 publications

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“…However, specific values are strictly dependent on the fabrication method, which could introduce structural defects or impurities . Newly minted applications of graphene sprout daily: electrical properties make it particularly suitable for electronic components, so that graphene-based sensors, capacitors, and batteries have been proposed. − As a semimetal, graphene lacks an energy band gap, but new materials such as graphene nanoribbons overcome such limitation and pave the way even to the fabrication of digital logic devices …”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional (3D) Laser-Induced Graphene: Structure, Properties, and Application to Chemical Sensing

Vivaldi

Dallinger

Bonini

et al. 2021

ACS Appl. Mater. Interfaces

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213

106

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Notwithstanding its relatively recent discovery, graphene has gone through many evolution steps and inspired a multitude of applications in many fields, from electronics to life science. The recent advancements in graphene production and patterning, and the inclusion of two-dimensional (2D) graphenic materials in three-dimensional (3D) superstructures, further extended the number of potential applications. In this Review, we focus on laser-induced graphene (LIG), an intriguing 3D porous graphenic material produced by direct laser scribing of carbonaceous precursors, and on its applications in chemical sensors and biosensors. LIG can be shaped in different 3D forms with a high surface-to-volume ratio, which is a valuable characteristic for sensors that typically rely on phenomena occurring at surfaces and interfaces. Herein, an overview of LIG, including synthesis from various precursors, structure, and characteristic properties, is first provided. The discussion focuses especially on transport and surface properties, and on how these can be controlled by tuning the laser processing. Progresses and trends in LIG-based chemical sensors are then reviewed, discussing the various transduction mechanisms and different LIG functionalization procedures for chemical sensing. A comparative evaluation of sensors performance is then provided. Finally, sensors for glucose detection are reviewed in more detail, since they represent the vast majority of LIG-based chemical sensors.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional (3D) Laser-Induced Graphene: Structure, Properties, and Application to Chemical Sensing

Vivaldi

Dallinger

Bonini

et al. 2021

ACS Appl. Mater. Interfaces

Self Cite

213

106

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“…While CV allows dynamic measurement of the switching between oxidized and reduced redox states, open circuit potential (OCP) measurements provide a non-destructive means [32][33][34][35] to detect the redox state for the catechol-deposited films. We illustrate OCP measurements using films that were first electrodeposited on standard gold electrode (10 × 10 −3 m PEG-SH, 30 × 10 −3 m catechol or AS, + 0.7 V, 1 min).…”

mentioning

confidence: 99%

Interactive Materials for Bidirectional Redox‐Based Communication

Wang

Zong

et al. 2021

Advanced Materials

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Emerging research indicates that biology routinely uses diffusible redox‐active molecules to mediate communication that can span biological systems (e.g., nervous and immune) and even kingdoms (e.g., a microbiome and its plant/animal host). This redox modality also provides new opportunities to create interactive materials that can communicate with living systems. Here, it is reported that the fabrication of a redox‐active hydrogel film can autonomously synthesize a H2O2 signaling molecule for communication with a bacterial population. Specifically, a catechol‐conjugated/crosslinked 4‐armed thiolated poly(ethylene glycol) hydrogel film is electrochemically fabricated in which the added catechol moieties confer redox activity: the film can accept electrons from biological reductants (e.g., ascorbate) and donate electrons to O2 to generate H2O2. Electron‐transfer from an Escherichia coli culture poises this film to generate the H2O2 signaling molecule that can induce bacterial gene expression from a redox‐responsive operon. Overall, this work demonstrates that catecholic materials can participate in redox‐based interactions that elicit specific biological responses, and also suggests the possibility that natural phenolics may be a ubiquitous biological example of interactive materials.

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“…Poma and coworkers decorated rGO with different organic molecules (4-aminobenzoic acid and 4-amino-fenilacetic acid) and improved the sensitivity up to 45 mv/pH in sea water, blood serum, and exudate [67][68][69][70]. A similar rGO-based sensor functionalized with 3-(4-aminophenil)propionic acid was efficiently transferred on paper and tested against the same matrices ( Figure 3C) [71].…”

Section: Potentiometric Ph Sensorsmentioning

confidence: 99%

Recent Advances in Optical, Electrochemical and Field Effect pH Sensors

et al. 2021

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Although its first definition dates back to more than a century ago, pH and its measurement are still studied for improving the performance of current sensors in everyday analysis. The gold standard is the glass electrode, but its intrinsic fragility and need of frequent calibration are pushing the research field towards alternative sensitive devices and materials. In this review, we describe the most recent optical, electrochemical, and transistor-based sensors to provide an overview on the status of the scientific efforts towards pH sensing.

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A graphenic and potentiometric sensor for monitoring the growth of bacterial biofilms

Cited by 22 publications

References 87 publications

Three-Dimensional (3D) Laser-Induced Graphene: Structure, Properties, and Application to Chemical Sensing

Three-Dimensional (3D) Laser-Induced Graphene: Structure, Properties, and Application to Chemical Sensing

Interactive Materials for Bidirectional Redox‐Based Communication

Recent Advances in Optical, Electrochemical and Field Effect pH Sensors

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