Thermoplastic electrodes as a new electrochemical platform coupled to microfluidic devices for tryptamine determination

Pradela‐Filho, Lauro A.; Araújo, Diele A.G.; Takeuchi, Regina M.; Santos, André L.; Henry, Charles S.

doi:10.1016/j.aca.2020.12.059

Cited by 24 publications

(11 citation statements)

References 39 publications

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“…Table S3 shows the electrochemical responses of the composites from the same batch were reproducible (RSD = 10%) since the sensitivities of the sensors were not significantly compromised by using different electrodes. RSD close to this estimated value was reported in the literature for other types of carbon composites, 1,8,26,45,46 demonstrating the proposed material has acceptable reproducibility. The batch‐to‐batch reproducibility was poorer (RSD = 15%).…”

Section: Resultssupporting

confidence: 85%

“…Paraffin, 6 epoxy, 7 mineral oils, and ionic liquids are examples of binders commonly used for the fabrication of carbon composites. Different carbon sources have also been used in the fabrication process of carbon composites including graphite, 1 carbon black, 8 and carbon nanotubes 9 . Among them, graphite is the most popular carbon source due to the combination of good electrical conductivity and low cost 10,11 .…”

Section: Introductionmentioning

confidence: 99%

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Low‐cost conductive films based on graphite and cellulose acetate as promising electroanalytical platforms

Paixão

Souza

Pradela‐Filho

et al. 2021

Polymers for Advanced Techs

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Conducting films were produced by incorporating 35, 50, and 60 wt.%. of graphite in cellulose acetate. The graphite contents showed to be of pivotal importance to the properties of the materials, mainly on the electrochemical performance. Thermal analyses indicated the graphite hinders the crystallization process of cellulose acetate and increases the hydrophobicity of the films. Scanning electron microscopy provided evidence of laminated graphite structures well‐dispersed in the polymeric matrix and exhibited a more porous aspect surface for the 50% G/Composite, which led to a higher surface area obtained by the N2 adsorption/desorption technique. This composite also had a better electrochemical response for ferrocyanide ion. The fabrication method was reproducible, which was associated with the structural uniformity of the resulting material. In addition, the conductive films are ready to use after production, precluding the need for any surface pretreatment. Moreover, the proposed sensor showed analytical potentiality for dopamine and hydroquinone determination, extending the possibilities for new electroanalytical applications.

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Low‐cost conductive films based on graphite and cellulose acetate as promising electroanalytical platforms

Paixão

Souza

Pradela‐Filho

et al. 2021

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

show abstract

“…[209,210] For in vivo studies in mice, simultaneous optical stimulation, neural recording, and drug delivery were accomplished using COC-based probes. Pradela-Filho et al [211,214] developed an electrochemical paper-based analytical device with COC film as a binding material for quantifying caffeic acid and tryptamine concentrations in liquid samples. The electrodes of the device were made of various carbon materials, and the binders considered were COC and other polymers.…”

Section: Organic Semiconductorsmentioning

confidence: 99%

“…The electrodes of the device were made of various carbon materials, and the binders considered were COC and other polymers. [211,212,214] Over the last decade, the popularity of flexible electronics such as smart watches and wristbands has skyrocketed. This technology's advancement is dependent on the development of textile electronics or polymer-based electronic thin films.…”

Section: Organic Semiconductorsmentioning

confidence: 99%

“…On-chip Raman detection Nanoimprinting [26] Laser chips Nanoimprinting [ 25,207] Fiber probes Rolling and thermal annealing [ 209,210] Sensing Thermoplastic binders [211][212][213][214] Lab on chip Plasma-enhanced lift-off and metal bonding thermal bonding [ 160,185,[218][219][220]224] Memristors Plasma-enhanced lift-off [221][222][223] Tunable RF filter Plasma-enhanced lift-off [ 217] Porous gold Film Deposition/etching [ 220] Tuning the wettability of COC Plasma-enhanced lift-off [ 161] DNA analysis Print, cut, and laminate (PCL) [ 225] gations focused on the applications of COCs in thermal systems, such as in renewable energy or thermal insulation. Cui et al [226] investigated the performance of solar concentrators made of COC (TOPAS 5013) and compared it with optical silicone MS-1002 and reported that COC and silicone are good choices in replacing the conventional glass material in solar collectors.…”

Section: Applications Fabrication Technique Referencesmentioning

confidence: 99%

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A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

Agha

Waheed

Alamoodi

et al. 2022

Macro Materials & Eng

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Cyclic olefin copolymers (COC) are amorphous, transparent thermoplastics composed of cyclic olefin monomers (norbornene) and linear olefins (ethene). They are increasingly utilized as fabrication materials for microsystems and microfluidic devices, owing to their promising features of low water absorption, high electrical insulation, long-term stability of surface treatments, and resistance to a broad variety of acids and solvents. Many manufacturing processes for COC-based devices have been developed in recent decades. These methodologies are categorized as replication methods or fast prototyping as common in fabrication of thermoplastic microfluidic devices. This review gives a full discussion of the features of COCs, the various production processes, and the numerous selected applications in microfluidic platforms. The review also explores COC's composition and fundamental features, as well as fabrication processes and applications in a variety of fields, investigates the material's potential advantages and uses, and attempts to create a comprehensive list of COC's possible benefits. Due to their unique features and simplicity of fabrication, COCs are projected to advance the future of microfluidics, microsystems, and optofluidics.

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Thermoplastic Electrode (TPE)‐based Enzymatic Glucose Sensor Using Polycaprolactone‐graphite Composites

Clark

Henry

2021

Electroanalysis

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Carbon composite electrodes are frequently used for enzymatic electrodes but suffer from poor electrocatalytic activity and/or are single use. Our group has recently developed thermoplastic electrodes (TPEs) that use a thermopolymer binder. The electrodes can be easily molded without extensive use of organic solvents enabling catalysts and enzymes to be added directly to the electrode material. The TPE material is bulk-modified with cobalt phthalocyanine and glucose oxidase, resulting in a robust sensor that is stable for over 100 minutes. These sensors can be molded into intricate shapes and sanded for surface renewal, allowing the sensors to be continuously reused.

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Thermoplastic electrodes as a new electrochemical platform coupled to microfluidic devices for tryptamine determination

Cited by 24 publications

References 39 publications

Low‐cost conductive films based on graphite and cellulose acetate as promising electroanalytical platforms

Low‐cost conductive films based on graphite and cellulose acetate as promising electroanalytical platforms

A Review of Cyclic Olefin Copolymer Applications in Microfluidics and Microdevices

Thermoplastic Electrode (TPE)‐based Enzymatic Glucose Sensor Using Polycaprolactone‐graphite Composites

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