A Water‐Gated Organic Thin‐Film Transistor for Glyphosate Detection: A Comparative Study with Fluorescence Sensing

Sasaki, Yoko; Asano, Kōichi; Minamiki, Tsukuru; Zhang, Zhoujie; Takizawa, Shin‐ya; Kubota, Riku; Minami, Tsuyoshi

doi:10.1002/chem.202003529

Cited by 18 publications

(13 citation statements)

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“…Next, the response of the Cu 2+ /PFO-BPy/ CoMoCat complex toward the still ubiquitous but harmful herbicide glyphosate 47 in water was studied. Competitive binding of Cu 2+ by glyphosate 48 has been widely used as a detection scheme 42,47,49,50 and should lead to a backshift of the transfer curves of PFO-BPy/CoMoCat transistors treated with Cu 2+ .…”

Section: Resultsmentioning

confidence: 99%

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing

et al. 2022

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“…Owing to the high capacitance of the EDL, the fabricated WG-OFET could be operated under |0.3| V . The water flow affected the EDLC, resulting in different transistor characteristics compared to those under static conditions . The stability evaluation showed no significant change in the I DS for at least 6 h (Figure S4).…”

Section: Resultsmentioning

confidence: 99%

“…The capture of target ions at the side chain of the OSC can induce a change in the EDLC. Furthermore, the polymer-based OFET sensor can amplify the sensitivity due to intra- and intermolecular wire effects. − More importantly, continuous and quantitative chemical sensing is highly demanding for practical measurements. For this purpose, microfluidic systems have many advantages such as high designability, easy control of water flow, and reduction of sample volume. , Although the OFET-based sensors combined with microfluidics have been thus studied, − such types of research are still rare.…”

Section: Introductionmentioning

confidence: 99%

“…P3CPT is utilized as the polymer OSC, the carboxylate side chain of which can form complexes with Cu 2+ at the interface. Since GlyP is known to strongly coordinate with the Cu 2+ ion, removal of the Cu 2+ ion from the Cu 2+ -P3CPT complex causes selective changes in EDLC. ,, For the development of a microfluidic system with the WG-OFET sensor, the structure of the microfluidic chamber and the flow rate for real-time monitoring were optimized using COMSOL Multiphysics software. Under optimal conditions, the formation of the Cu 2+ -P3CPT complex induces an increase in the drain current of the WG-OFET, while the current is decreased with the addition of GlyP.…”

Section: Introductionmentioning

confidence: 99%

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Real-Time Detection of Glyphosate by a Water-Gated Organic Field-Effect Transistor with a Microfluidic Chamber

et al. 2021

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This paper reports the development of a real-time monitoring system utilizing the combination of a water-gated organic field-effect transistor (WG-OFET) and a microfluidic chamber for the detection of the herbicide glyphosate (GlyP). For the realization of the real-time sensing with the WG-OFET, the surface of a polymer semiconductor was utilized as a sensing unit. The aqueous solution including the target analyte, which is employed as a gate dielectric of the WG-OFET, flows into a designed microfluidic chamber on the semiconductor layer and the gate electrode. As the sensing mechanism, the WG-OFET-based sensor utilizes the competitive complexation among carboxylate-functionalized polythiophene, a copper(II) (Cu2+) ion, and GlyP. The reversible accumulation and desorption of the positively charged Cu2+ ion on the semiconductor surface induced a change in the electrical double-layer capacitance (EDLC). The optimization of the microfluidic chamber enables a uniform water flow and contributes to real-time quantitative sensing of GlyP at a micromolar level. Thus, this study would lead to practical real-time sensing in water for various fields including environmental assessment.

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“…Moreover, EGOFETs provide coupling of both ionic and electronic domains in a single device, what opens various opportunities for sensing applications. [22][23][24][25] Among widely investigated electrolytic compounds (e.g., ionic liquids, iongels, aqueous and solid-state electrolytes), [26][27][28][29] pure/distilled water is a common gating media. [30][31][32][33] While aqueous gating is being exploited for biosensing assays, [34][35][36] a liquid gating phase clearly poses issues in circuits integration.…”

Section: Introductionmentioning

confidence: 99%

Sweet Electronics: Honey‐Gated Complementary Organic Transistors and Circuits Operating in Air

Sharova

Caironi

2021

Advanced Materials

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readily available natural resources for the design and fabrication of "benign" electronic solutions is growing. As a result, recently, an increased emphasis has been placed on the investigation of alternative organic, green, and biodegradable electronics. [1][2][3] When the electronic technology faces the healthcare and food sector, safety of the devices becomes mandatory. The latter is particularly critical when the electronic systems are intended to explicitly interact with the inside of the human body, be ingested either along with the consumed food or pharmaceutical products. In this framework, ingestible electronics has so far achieved remarkable advances paving the way for a new era diagnostics and therapy. [4][5][6][7][8] However, ingestible systems available to date, [9] apart from their bulk design and need of post-performance recollection, have critical drawbacks manifesting primarily in the use of toxic and non disposable materials, posing hazards not only to the consumer health but also to the environment. To this end, the recently conceptualized "edible electronics" [10][11][12] envisions electronic systems fulfilling key electronic functionalities, being sustainable, nontoxic, safe for ingestion, and cost-effective at the same time. The unique feature of this emerging field lies in exploiting edible materials of different nature (e.g., food, drugs, edible metals, edible pigments, dyes, and polymers) as electronics constituents, according to their electronic properties, to provide all the necessary building blocks: conductors, insulators, semiconductors. Due to the absolute safe composition, edible devices are intended to undergo degradation within the body after accomplishing their task, what implies elimination of any potential adverse effects.Being at an emerging stage, the field is scarce in examples. Yet the feasibility of this new paradigm relies on several inspiring and rather exotic prototypes of edible, and in particular food-based electronic components, such as cheese supercapacitors, [13] broccoli microphones, [14] charcoal-based biofuel cells, [15] silk sensors, [16] transistors based on edible pigments, [12,17] among others.In order to fulfill the fundamental electronic duties of tracking, monitoring, sensing, and data transmission, edible electronics systems will require active circuits. In this context, transistors represent the backbone components of future edible systems, for which low-voltage/low-power operation is mandatory.Sustainable harnessing of natural resources is key moving toward a newgeneration electronics, which features a unique combination of electronic functionality, low cost, and absence of environmental and health hazards. Within this framework, edible electronics, of which transistors and circuits are a fundamental component, is an emerging field, exploiting edible materials that can be safely ingested, and subsequently digested after performing their function. Dielectrics are a critical functional element of transistors, often constituting their major volume. Yet, ...

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A Water‐Gated Organic Thin‐Film Transistor for Glyphosate Detection: A Comparative Study with Fluorescence Sensing

Abstract: YuiS asaki, [a] Koichiro Asano, [a] Ts ukuru Minamiki, [a] Zhoujie Zhang, [a] Shin-ya Ta kizawa, [b] Riku Kubota, [a] and Ts uyoshiM inami* [a]

Cited by 18 publications

References 48 publications

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing

Real-Time Detection of Glyphosate by a Water-Gated Organic Field-Effect Transistor with a Microfluidic Chamber

Sweet Electronics: Honey‐Gated Complementary Organic Transistors and Circuits Operating in Air

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A Water‐Gated Organic Thin‐Film Transistor for Glyphosate Detection: A Comparative Study with Fluorescence Sensing

Abstract: YuiS asaki, [a] Koichiro Asano, [a] Ts ukuru Minamiki, [a] Zhoujie Zhang, [a] Shin-ya Ta kizawa, [b] Riku Kubota, [a] and Ts uyoshiM inami* [a]

Cited by 18 publications

References 48 publications

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu2+ and glyphosate sensing

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu2+ and glyphosate sensing

Real-Time Detection of Glyphosate by a Water-Gated Organic Field-Effect Transistor with a Microfluidic Chamber

Sweet Electronics: Honey‐Gated Complementary Organic Transistors and Circuits Operating in Air

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Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing

Networks of as-dispersed, polymer-wrapped (6,5) single-walled carbon nanotubes for selective Cu²⁺ and glyphosate sensing