Trianglamine hydrochloride crystals for a highly sensitive and selective humidity sensor

Chappanda, Karumbaiah N.; Chaix, Arnaud; Surya, Sandeep G.; Moosa, Basem; Khashab, Niveen M.; Salama, Khaled N.

doi:10.1016/j.snb.2019.05.008

Cited by 22 publications

(26 citation statements)

References 41 publications

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“…This is because the dielectric constant of the active medium in the sensor proportionally increases with the increase in humidity, which results in the increase of the sensor’s capacitance. 30 Interestingly, the devices were regenerated in the presence of nitrogen, and no heating or vacuum was required to recover the device after exposure. In the absence of the MOF layer, the charge storage contribution of the pristine textile fabric is negligible, resulting in extremely low baseline capacitance values (<1 fF), which is consistent with the previously reported textile-based wearable capacitors.…”

Section: Resultsmentioning

confidence: 99%

“… 28 Moreover, extreme conditions of humidity have adverse effects on human health and are linked to many diseases. 29 Different types of humidity sensors have been developed based on either solid-state devices, 24 , 30 − 40 flexible substrates, 41 − 47 inkjet printed textile, 48 or textile fiber composite materials. 3 , 49 − 55 Most of these studies demonstrated the sensitivity of the sensor; however, only a few of these discussed the selectivity of the sensor, which is equally important.…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective Metal–Organic Framework Textile Humidity Sensor

Rauf

Vijjapu

Andrés

et al. 2020

ACS Appl. Mater. Interfaces

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The increase in demand and popularity of smart textiles brings new and innovative ideas to develop a diverse range of textile-based devices for our daily life applications. Smart textile-based sensors (TEX sensors) become attractive due to the potential to replace current solid-state sensor devices with flexible and wearable devices. We have developed a smart textile sensor for humidity detection using a metal–organic framework (MOF) as an active thin-film layer. We show for the first time the use of the Langmuir–Blodgett (LB) technique for the deposition of a MIL-96(Al) MOF thin film directly onto the fabrics containing interdigitated textile electrodes for the fabrication of a highly selective humidity sensor. The humidity sensors were made from two different types of textiles, namely, linen and cotton, with the linen-based sensor giving the best response due to better coverage of MOF. The TEX sensor showed a reproducible response after multiple cycles of measurements. After 3 weeks of storage, the sensor showed a moderate decrease in response. Moreover, TEX sensors showed a high level of selectivity for the detection of water vapors in the presence of several volatile organic compounds (VOCs). Interestingly, the selectivity is superior to some of the previously reported MOF-coated solid-state interdigitated electrode devices and textile sensors. The method herein described is generic and can be extended to other textiles and coating materials for the detection of toxic gases and vapors.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Rauf

Vijjapu

Andrés

et al. 2020

ACS Appl. Mater. Interfaces

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“…We fabricated IDE substrates as reported in our earlier findings. 27,39 5 mg of MOFs and their composites were added to the 1 mL of DMF solvent and stirred for 3 hours at 1000 rpm.…”

Section: Sensor Fabrication and Characterizationmentioning

confidence: 99%

A silver nanoparticle-anchored UiO-66(Zr) metal–organic framework (MOF)-based capacitive H₂S gas sensor

et al. 2019

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“…[25][26][27] A rapidly emerging D-A conjugated polymer that is at the forefront is the Diketopyrrolopyrrole (DPP) copolymer, which has been successfully explored for various sensing activities. [28][29][30] Similarly, conjugated thiophenes (CTs) have also been examined for explosive detection, where CT acts as a donor block for electron deficient explosive molecules. [30][31] However, to the best of our knowledge, no research groups have demonstrated until now, the NO2 sensing performance of stable D-A conjugated polymer-based OFET devices.…”

Section: Introductionmentioning

confidence: 99%

Realization of an Ultrasensitive and Highly Selective OFET NO₂ Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF

Yuvaraja

Surya

Chernikova

et al. 2020

ACS Appl. Mater. Interfaces

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Organic field-effect transistors (OFETs) are emerging as competitive candidates for gas sensing applications due to the ease of their fabrication process combined with the ability to readily fine-tune the properties of organic semiconductors. Nevertheless, some key challenges remain to be addressed, such as material degradation, low sensitivity, and poor selectivity toward toxic gases. Appropriately, a heterojunction combination of different sensing layers with multifunctional capabilities offers great potential to overcome these problems. Here, a novel and highly sensitive receptor layer is proposed encompassing a porous 3D metal–organic framework (MOF) based on isostructural-fluorinated MOFs acting as an NO2 specific preconcentrator, on the surface of a stable and ultrathin PDVT-10 organic semiconductor on an OFET platform. Here, with this proposed combination we have unveiled an unprecedented 700% increase in sensitivity toward NO2 analyte in contrast to the pristine PDVT-10. The resultant combination for this OFET device exhibits a remarkable lowest detection limit of 8.25 ppb, a sensitivity of 680 nA/ppb, and good stability over a period of 6 months under normal laboratory conditions. Further, a negligible response (4.232 nA/%RH) toward humidity in the range of 5%–90% relative humidity was demonstrated using this combination. Markedly, the obtained results support the use of the proposed novel strategy to achieve an excellent sensing performance with an OFET platform.

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Trianglamine hydrochloride crystals for a highly sensitive and selective humidity sensor

Cited by 22 publications

References 41 publications

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Highly Selective Metal–Organic Framework Textile Humidity Sensor

A silver nanoparticle-anchored UiO-66(Zr) metal–organic framework (MOF)-based capacitive H₂S gas sensor

Realization of an Ultrasensitive and Highly Selective OFET NO₂ Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF

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Trianglamine hydrochloride crystals for a highly sensitive and selective humidity sensor

Cited by 22 publications

References 41 publications

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Highly Selective Metal–Organic Framework Textile Humidity Sensor

A silver nanoparticle-anchored UiO-66(Zr) metal–organic framework (MOF)-based capacitive H2S gas sensor

Realization of an Ultrasensitive and Highly Selective OFET NO2 Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF

Contact Info

Product

Resources

About

A silver nanoparticle-anchored UiO-66(Zr) metal–organic framework (MOF)-based capacitive H₂S gas sensor

Realization of an Ultrasensitive and Highly Selective OFET NO₂ Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF