Ultrasensitive flexible NO2 gas sensors via multilayer porous polymer film

Gao, Lin; Liu, Changjian; Peng, Yujie; Deng, Jinyi; Hou, Senlin; Cheng, Yuhua; Huang, Wei; Yu, Junsheng

doi:10.1016/j.snb.2022.132113

Cited by 31 publications

(16 citation statements)

References 34 publications

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“…5b). 47,48 The exposure to NH 3 has increased the drain current of the pristine NDI device and the response is also far lower than that for porous films (Fig. 5c).…”

Section: Porous Oeft Devices For Gas Sensor Applicationmentioning

confidence: 90%

Direct laser patterning of organic semiconductors for high performance OFET-based gas sensors

et al. 2023

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“…5b). 47,48 The exposure to NH 3 has increased the drain current of the pristine NDI device and the response is also far lower than that for porous films (Fig. 5c).…”

Section: Porous Oeft Devices For Gas Sensor Applicationmentioning

confidence: 90%

Direct laser patterning of organic semiconductors for high performance OFET-based gas sensors

et al. 2023

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“…Among the many known VOCs (e.g., ammonia, − nitrogen dioxide (NO 2 ), − hydrogen sulfide (H 2 S), , toluene, acetone, and formaldehyde), NO 2 is one of the most intensively targeted gases because it can directly damage human health at ppm levels; moreover, NO 2 is the cause of many environmental problems. To effectively monitor NO 2 gas, Jin et al demonstrated an ionotronic gas-sensing sticker (IGS) that showed particularly high selectivity for NO 2 and can be used as a wearable gas-sensing platform .…”

Section: Chemical Sensorsmentioning

confidence: 99%

Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Song

Choi

Jeon

et al. 2022

ACS Appl. Electron. Mater.

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The recent emergence of the Internet of Things (IoT) and the rise of artificial intelligence have led to substantial interest in gathering information through various sensing techniques. In particular, environmental sensing technologies implemented through the IoT have important roles in automated smart platforms. In this review, we introduce research trends and prospects for sensing technologies based on organic materials that collect information from surrounding environmental media. State-of-the-art chemical, optical, and physical organic sensors hold great promise for the realization of smart environmental systems combined with IoT network platforms.

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“…Therefore, the design of a side chain capable of specific interaction with an analyte to improve the detection sensitivity of CP-based electronic sensors is in high demand. In addition, since the porous morphology of CP can facilitate gas diffusion and enlarge the reactive surface area [ 24 , 25 , 26 , 27 , 28 ], CP films with porous structures have been reported to provide enhanced gas detection capabilities [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Side-Chain-Assisted Transition of Conjugated Polymers from a Semiconductor to Conductor and Comparison of Their NO2 Sensing Characteristics

et al. 2023

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To investigate the effect of a side chain on the electrical properties of a conjugated polymer (CP), we designed two different CPs containing alkyl and ethylene glycol (EG) derivatives as side chains on the same conjugated backbone with an electron donor-acceptor (D-A) type chain configuration. PTQ-T with an alkyl side chain showed typical p-type semiconducting properties, whereas PTQ-TEG with an EG-based side chain exhibited electrically conductive behavior. Both CPs generated radical species owing to their strong D-A type conjugated structure; however, the spin density was much greater in PTQ-TEG. X-ray photoelectron spectroscopy analysis revealed that the O atoms of the EG-based side chains in PTQ-TEG were intercalated with the conjugated backbone and increased the carrier density. Upon application to a field-effect transistor sensor for PTQ-T and resistive sensor for PTQ-TEG, PTQ-TEG exhibited a better NO2 detection capability with faster signal recovery characteristics than PTQ-T. Compared with the relatively rigid alkyl side chains of PTQ-T, the flexible EG-based side chains in PTQ-TEG have a higher potential to enlarge the free volume as well as improve NO2-affinity, which promotes the diffusion of NO2 in and out of the PTQ-TEG film, and ultimately resulting in better NO2 detection capabilities.

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Ultrasensitive flexible NO2 gas sensors via multilayer porous polymer film

Cited by 31 publications

References 34 publications

Direct laser patterning of organic semiconductors for high performance OFET-based gas sensors

Direct laser patterning of organic semiconductors for high performance OFET-based gas sensors

Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Side-Chain-Assisted Transition of Conjugated Polymers from a Semiconductor to Conductor and Comparison of Their NO2 Sensing Characteristics

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