Novel humidity sensitive materials derived from naphthalene-based poly (arylene ether ketone) containing sulfobutyl pendant groups

Qi, Duo; Zhao, Chengji; Zhuang, Zhuang; Li, Guibin; Na, Hui

doi:10.1016/j.electacta.2016.03.056

Cited by 14 publications

(8 citation statements)

References 41 publications

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“…As for the ionomer with the highest Ds (Ds = 1.9), the humidity hysteresis value is 6% RH, smaller than the ionomer with 1.0 Ds. We consider this phenomenon to be due to the biggest ionic clusters formed at high Ds in this series of materials as mentioned by Qi et al 19 Under this circumstance, within the measurement humidity environment, the situation where relaxation diffusion dominates would not happen, and the polymer could still exchange water with the environment with a fast rate in the two processes.…”

Section: Resultsmentioning

confidence: 86%

“…Chemicals 1,5-Bis (4-fluorobenzoyl)-2,6-dimethoxynaphalene was synthesized according to our previous work. 19 Ferric chloride, boron tribromide, methyl hydroquinone, 1,4butylenesulfone, toluene, sodium hydroxide (NaOH), acetone, N-methyl-2-pyrrolidinone, N,N-dimethylformamide, and N,N-dimethyl sulfoxide (DMSO) were used without further purification.…”

Section: Methodsmentioning

confidence: 99%

“…18 In recent years, this type of material was found to have the ability to respond to RH variation. 19 However, investigations devoted to this kind of superior material on the humidity sensing behavior are not so abundant. Moreover, the rule of the important characteristics of humidity sensors has not been discussed yet.…”

Section: Introductionmentioning

confidence: 99%

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Investigations of the humidity sensing properties of side-chain-type sulfonated poly (arylene ether ketone)s

Meng

Zhuang

Zhang

et al. 2019

High Performance Polymers

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Side-chain-type sulfonated poly (arylene ether ketone)s containing naphthalene moieties with a degree of sulfonation (Ds) from 0.2 to 1.9 were synthesized. Humidity sensors were fabricated by cast coating on silver–palladium interdigital microelectrodes. The properties of this series of materials in terms of water absorption, glass transition temperature, and humidity sensing were characterized in detail. The investigations on the humidity sensing performance showed that with the increase in the Ds, the hysteresis of our materials exhibits an increasing trend first, followed by a decrease. This special phenomenon has not been reported before and caught our attention. From the results of humidity sensing properties, among the materials, the one with 0.2 Ds is promising for applications in humidity sensing due to its small hysteresis and fast response to varied relative humidity (RH). For a better understanding of the humidity sensing behavior of the sensor, complex impedance spectra were also measured. In the long-term stability measurement, the deviation of the measured impedance of the sensor at 97% RH is not obvious, proving good stability in a humid environment.

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Section: Resultsmentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Investigations of the humidity sensing properties of side-chain-type sulfonated poly (arylene ether ketone)s

Meng

Zhuang

Zhang

et al. 2019

High Performance Polymers

Self Cite

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“…Because the response/ recovery time is short on the scale of seconds, this device can discriminate breathing rates, including slow, normal, and deep rhythms. The para-condensed and ortho-condensed polysquaramide positional isomers are designed, and they show excellent performance among reported polymeric materials [63][64][65][66][67][68][69][70][71][72][73][74][75][76][77] (Table 2 [76] ) for humidity detection. The response/recovery time of the polysquaramide-based humidity sensor is 2/1 s, and this sensor device is applied to monitor human respiration and communicate using Morse code.…”

Section: Humidity Sensingmentioning

confidence: 99%

Ion‐in‐Conjugation: A Promising Concept for Multifunctional Organic Semiconductors

2022

Small

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Most organic semiconductors (OSCs) consist of conjugated skeletons with flexible peripheral chains. Their weak intermolecular interactions from dispersion and induction forces result in environmental susceptibilities and are unsuitable for many multifunctional applications where direct exposure to external environments is unavoidable, such as gas absorption, chemical sensing, and catalysis. To exploit the advantages of inorganic semiconductors in OSCs, ion‐in‐conjugation (IIC) materials are proposed. An IIC material refers to any conjugated material (molecules, polymers, and crystals) in Kekule's structural formula containing stoichiometric ionic states in its conjugated backbone in the electronic ground state. In this review, the definitions, structures, synthesis, properties, and applications of IIC materials are described briefly. Four types of IIC material, including zwitterionic conjugated molecules/polymers, conjugated ionic dyes, π‐d conjugated molecules and polymers, and coordinatively doped polymers, are reported. Their applications in gas sensing, humidity sensing, resistive memory devices, and thermal/photo‐/electro‐catalysis are demonstrated. The challenges and opportunities for future research are also discussed. It is expected that this work will inspire the design of new organic electronic information materials.

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“…Recently, resistive-type humidity sensors have received considerable attention due to their high sensitivity, good linearity, operating stability and direct current electrical conductivity. Resistive-type humidity sensors make frequent use of the main categories of humidity sensing materials, which are ceramics, carbon materials, polymers, and metal oxide semiconductors [ 7 , 8 , 9 ]. Among these materials, metal oxide semiconductors are the most common material type used for humidity sensors on account of their ease of fabrication, and controllable size and morphology.…”

Section: Introductionmentioning

confidence: 99%

AuNPs Hybrid Black ZnO Nanorods Made by a Sol-Gel Method for Highly Sensitive Humidity Sensing

Zhang¹,

Zhang²,

Lin³

et al. 2018

Sensors

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A highly sensitive self-powered humidity sensor has been realized from AuNPs hybrid black zinc oxide (ZnO) nanorods prepared through a sol-gel method. XRD pattern reveals that both ZnO and ZnO/AuNPs exhibit a wurtzite structure. ZnO/AuNPs nanorods grow in a vertical alignment, which possesses high uniformity and forms dense arrays with a smaller diameter than that of ZnO nanoparticles. All ZnO/AuNPs and pure black ZnO show lower band gap energy than the typically reported 3.34 eV of pure ZnO. Furthermore, the band gap of ZnO/AuNPs nanocomposites is effectively influenced by the amount of AuNPs. The humidity sensing tests clearly prove that all the ZnO/AuNPs humidity sensors exhibit much higher response than that of ZnO sensors, and the sensitivity of such ZnO/AuNPs nanorods (6 mL AuNPs) display a change three orders higher than that of pure ZnO with relative humidity (RH) ranging from 11% to 95% at room temperature. The response and recovery time of the ZnO/AuNPs are 5.6 s and 32.4 s, respectively. This study of the construction of semiconductor/noble metal sensors provides a rational way to control the morphology of semiconductor nanomaterials and to design a humidity sensor with high performance.

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Novel humidity sensitive materials derived from naphthalene-based poly (arylene ether ketone) containing sulfobutyl pendant groups

Cited by 14 publications

References 41 publications

Investigations of the humidity sensing properties of side-chain-type sulfonated poly (arylene ether ketone)s

Investigations of the humidity sensing properties of side-chain-type sulfonated poly (arylene ether ketone)s

Ion‐in‐Conjugation: A Promising Concept for Multifunctional Organic Semiconductors

AuNPs Hybrid Black ZnO Nanorods Made by a Sol-Gel Method for Highly Sensitive Humidity Sensing

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