Flexible conducting platforms based on PEDOT and graphite nanosheets for electrochemical biosensing applications

Scotto, Juliana; Piccinini, Esteban; Bilderling, Catalina von; Coria-Oriundo, Lucy L.; Battaglini, Fernando; Knoll, Wolfgang; Marmisollé, Waldemar A.; Azzaroni, Omar

doi:10.1016/j.apsusc.2020.146440

Cited by 20 publications

(13 citation statements)

References 74 publications

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“…Moreover, when considering the biosensing field, the development of flexible electrochemical platforms has received remarkable interest from the scientific community over the last decade due to their great potential to build implantable devices for predictive analyses and personalized medicine. [130][131][132] In this regard, while the preparation of PE-DOT-based films on metal electrodes have been widely reported, this substrates are not suitable when it comes to the development of flexible platforms, making necessary the employment of conductive surfaces which also show mechanical stability [2,133]. Here is where PEDOT and PEDOT-related materials offer their very interesting properties, showing excellent conductivity as well as light weight, high flexibility, and mechanical adaptability [16,68].…”

Section: Biosensingmentioning

confidence: 99%

“…Next, the films were glycosylated either with mannose or N-acetylglucosamine (GlcNAc) in the same buffer. Subsequently, the self-assembly of Concanavalin A (ConA) Moreover, when considering the biosensing field, the development of flexible electrochemical platforms has received remarkable interest from the scientific community over the last decade due to their great potential to build implantable devices for predictive analyses and personalized medicine [130][131][132]. In this regard, while the preparation of PEDOTbased films on metal electrodes have been widely reported, this substrates are not suitable when it comes to the development of flexible platforms, making necessary the employment of conductive surfaces which also show mechanical stability [2,133].…”

Section: Biosensingmentioning

confidence: 99%

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Functionalization Strategies of PEDOT and PEDOT:PSS Films for Organic Bioelectronics Applications

et al. 2021

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Organic bioelectronics involves the connection of organic semiconductors with living organisms, organs, tissues, cells, membranes, proteins, and even small molecules. In recent years, this field has received great interest due to the development of all kinds of devices architectures, enabling the detection of several relevant biomarkers, the stimulation and sensing of cells and tissues, and the recording of electrophysiological signals, among others. In this review, we discuss recent functionalization approaches for PEDOT and PEDOT:PSS films with the aim of integrating biomolecules for the fabrication of bioelectronics platforms. As the choice of the strategy is determined by the conducting polymer synthesis method, initially PEDOT and PEDOT:PSS films preparation methods are presented. Later, a wide variety of PEDOT functionalization approaches are discussed, together with bioconjugation techniques to develop efficient organic-biological interfaces. Finally, and by making use of these approaches, the fabrication of different platforms towards organic bioelectronics devices is reviewed.

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Section: Biosensingmentioning

confidence: 99%

Section: Biosensingmentioning

confidence: 99%

Functionalization Strategies of PEDOT and PEDOT:PSS Films for Organic Bioelectronics Applications

et al. 2021

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“…These carbon nanomaterials generally have excellent conductivity, biocompatibility, and a large specific surface area [7]. Of these carbon nanomaterials, graphene and its derivatives have been widely used for the design of DA sensors thanks to their better macroscopic scale conductivity and electrocatalytic activity than other carbon-based materials [8]. Graphene has also been incorporated into nanocomposites and showed high performance in the electrochemical determination of DA [9,10].…”

Section: Introductionmentioning

confidence: 99%

Review—Recent Progress in Graphene Based Modified Electrodes for Electrochemical Detection of Dopamine

et al. 2022

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Graphene and its derivatives have been widely used for the electrochemical detection of dopamine (DA) neurotransmitter, thanks to its high surface area and excellent conductivity. Modified graphene and graphene-based nanocomposites have shown improved catalytic activity towards DA detection. Various modification approaches have been taken, including heteroatom doping and association with other nanomaterials. This review summarizes and highlights the recent advances in graphene-based electrodes for the electrochemical detection of DA. It also aims to provide an overview of the advantages of using polymer as a linker platform to form graphene-based nanocomposites applied to electrochemical DA sensors.

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“…Within conducting polymers, polypyrrole (Ppy), polyaniline (PANI), − poly(3,4-ethylenedioxythiophene) (PEDOT), and their derivatives have been extensively used in redox capacitors. − Particularly, PEDOT-based SCs have received great attention in the last few years due to their outstanding electrical properties, in addition to their high specific capacitance, flexibility biocompatibility, acceptable potential window for electrochemical operation, air stability, superior chemical stability in the doped state, and a small band gap. − Most of the aforementioned materials require the use of conductive substrates as ITO or carbon materials as current collectors . Even the use of carbon cloth has also been reported for both a mechanical scaffold and a current collector. , However, in the case of PEDOT, it is possible to produce metal-free electrodes by depositing conducting polymer films on insulating plastic substrates, with excellent performance in electrochemical applications such as nanofluidics, biosensing, , and even for flexible electrodes. , …”

Section: Introductionmentioning

confidence: 99%

PEDOT-Based Stackable Paper Electrodes for Metal-Free Supercapacitors

Sappia

Pascual

Azzaroni

et al. 2021

ACS Appl. Energy Mater.

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Paper-based electrodes are promising candidates for energy storage devices due to its availability in nature, low cost, sustainability, intrinsic porosity/fibrous structure, and mechanical properties. In this work, we implemented a straightforward method to control the capacitive response of paper electrodes modified by deposition of PEDOT-polyamine composites. These composite materials were characterized by TGA, SEM-EDS, and Raman spectroscopy, proving the homogeneous functionalization and proper integration of the polymers within the paper microstructure. The electrochemical evaluation by cyclic voltammetry (CV) and galvanostatic charge–discharge curves (GCD) revealed the stable electroactivity of the paper electrodes in a neutral 0.5 M NaCl solution, whereas the introduction of polyamine yielded an enhancement of the capacitive performance. Furthermore, the stacking of paper sheets on a current collector was proved to be an efficient strategy for building electrodes with tunable pseudocapacitance with adequate electrochemical connectivity across the whole architecture. A linear increase in the total capacitance measured by both CV and GCD (60–400 mF/cm2) on the number of stacked PEDOT-modified paper sheets was determined (1–6 sheets). The stacking strategy was comparatively tested using both plastic (PET) and metallic (Au) substrates for preparing the current collectors with similar results and excellent cyclability and capacitance retention (97% after 1000 GCD cycles for three stacked sheets) in 0.5 M NaCl as a harmless and environmentally friendly electrolyte. The stacking of paper sheets modified by polyamine-doped PEDOT coatings constitutes a simple and promissory strategy facing the construction of lightweight metal-free electrodes for harmless supercapacitors in wearable devices.

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Flexible conducting platforms based on PEDOT and graphite nanosheets for electrochemical biosensing applications

Cited by 20 publications

References 74 publications

Functionalization Strategies of PEDOT and PEDOT:PSS Films for Organic Bioelectronics Applications

Functionalization Strategies of PEDOT and PEDOT:PSS Films for Organic Bioelectronics Applications

Review—Recent Progress in Graphene Based Modified Electrodes for Electrochemical Detection of Dopamine

PEDOT-Based Stackable Paper Electrodes for Metal-Free Supercapacitors

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