MXene@MnIn₂S₄‐Gated Organic Photoelectrochemical Transistors with Nanozyme‐Mediated Multiple Quenching Effects for Ultrasensitive Detection of Okadaic Acid

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 4, 2024

Abstract Organic optoelectronics have attracted widespread interdisciplinary research interest but lags far behind in the application marine environmental detection. The organic photoelectrochemical transistor (OPECT) shows promise as a powerful tool for comprehensive monitoring and early warning of conditions, which can be further enhanced by valuable signal amplification strategy nanozyme‐mediated catalytic precipitation. Herein, OPECT technology is integrated with precipitation first time, establishing an ultrasensitive detection platform okadaic acid (OA). Specifically, MXene@MnIn 2 S 4 (MXMnIS) hybrid composed Schottky‐junction synthesized via hydrothermal method, efficiently modulate device high current gain. Linking sandwich immunoassay, Ru‐C 3 N nanozyme peroxidase‐mimicking activity catalyze oxidation 4‐chloro‐1‐naphthol (4‐CN) to form insoluble precipitate on electrode surface, resulting decrease photocurrent altering response. Importantly, proposed biosensor presented excellent sensitivity low limit (32.5 pM), fully satisfying fundamental requirements quantitative intracellular extracellular OA practical culture media Prorocentrum lima at different growth stages. This based quenching effect significant effectively safety ecological environment food safety.

Язык: Английский

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π‐Conjugated Polymers for High‐Performance Organic Electrochemical Transistors: Molecular Design Strategies, Applications and Perspectives

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract The last decade has witnessed significant progress in organic electrochemical transistors (OECTs) due to their enormous potential applications various bioelectronic devices, such as artificial synapses, biological interfaces, and biosensors. remarkable advance this field is highly powered by the development of novel mixed ionic/electronic conductors (OMIECs). π‐Conjugated polymers (CPs), which are widely used optoelectronics, emerging key channel materials for OECTs. In review, after briefly introducing OECT, we then mainly focus on latest CPs high‐performance correlations structure, basic physicochemical properties, device performance elucidated evaluating electronic characters, optoelectronic OECT performance. Then, CP‐based OECTs presented. Finally, discuss several remaining issues or challenges give our insights into advancing enhanced

Язык: Английский

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Organic Transistor-Based Chemical Sensors for Wearable Bioelectronics

Accounts of Chemical Research, Год журнала: 2018, Номер 51(11), С. 2829 - 2838

Опубликована: Ноя. 7, 2018

ConspectusBioelectronics for healthcare that monitor the health information on users in real time have stepped into limelight as crucial electronic devices future due to increased demand "point-of-care" testing, which is defined medical diagnostic testing at and place of patient care. In contrast traditional generally conducted institutions with instruments requires a long specimen analysis, point-of-care can be accomplished personally bedside, monitored time. Advances materials science device technology enabled next-generation electronics, including flexible, stretchable, biocompatible devices, bringing commercialization personalized increasingly within reach, e.g., wearable bioelectronics attached body Additionally, monitoring harmful factors environment surrounding user, such air pollutants, chemicals, ultraviolet light, also important maintenance because short- long-term detrimental effects human body. The precise detection chemical species from both personal care abundant provide when determining person's condition. this respect, sensor applications based an organic-transistor platform various advantages, signal amplification, molecular design capability, low cost, mechanical robustness (e.g., flexibility stretchability).This Account covers recent progress organic transistor-based sensors detect or environment, will core elements devices. There has been considerable effort develop high-performance platforms through material engineering. Various experimental approaches adopted high sensitivity, selectivity, stability, synthesis new materials, structural engineering, surface functionalization, Account, we first brief introduction operating principles sensors. Then summarize fabrication molecules sweat, saliva, urine, tears, etc.). We then highlight examples detecting chemicals user nitrogen oxides, sulfur dioxide, volatile compounds, liquid-phase solvents, heavy metal ions). Finally, conclude perspective bioelectronics, especially focusing

Язык: Английский

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Ion Electron–Coupled Functionality in Materials and Devices Based on Conjugated Polymers

Advanced Materials, Год журнала: 2019, Номер 31(22)

Опубликована: Янв. 8, 2019

Abstract The coupling between charge accumulation in a conjugated polymer and the ionic compensation, provided from an electrolyte, defines mode of operation vast array different organic electrochemical devices. most explored mixed ion–electron conductor, serving as active electrode these devices, is poly(3,4‐ethyelenedioxythiophene) doped with polystyrelensulfonate (PEDOT:PSS). In this progress report, scientists Laboratory Organic Electronics at Linköping University review some achievements derived over last two decades field particular including PEDOT:PSS material. recently established understanding volumetric capacitance transport properties PEDOT are described along examples various devices phenomena utilizing coupling, such transistor, ionic–electronic thermodiffusion, electrochromic surface switches, more. One pioneers exciting research Prof. Olle Inganäs authors report wish to celebrate acknowledge all fantastic inspiration accomplished by since 1981.

Язык: Английский

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Multiscale real time and high sensitivity ion detection with complementary organic electrochemical transistors amplifier

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Июль 27, 2020

Abstract Ions are ubiquitous biological regulators playing a key role for vital processes in animals and plants. The combined detection of ion concentration real-time monitoring small variations with respect to the resting conditions is multiscale functionality providing important information on health states. This still an open challenge current sensing approaches. Here we show high-sensitivity complementary organic electrochemical transistors amplifiers. ion-sensing amplifier integrates same device both selective ion-to-electron transduction local signal amplification demonstrating sensitivity larger than 2300 mV V −1 dec , which overcomes fundamental limit. It provides over range five orders magnitude two lower detected concentration, viz. detection. approach generally applicable several transistor technologies opens opportunities multifunctional enhanced bioelectronics.

Язык: Английский

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