Chemiresistive sensors of electrically conducting poly(2,5-thienylene vinylene) and copolymers: their responses to nine organic vapours

Wit, M. De; Vanneste, E.; Geise, H. J.; Nagels, L.J.

doi:10.1016/s0925-4005(98)00227-5

Cited by 46 publications

(23 citation statements)

References 14 publications

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“…These were coated with a thin film of 10% (w/w) FeCl 3 -doped 12COS-PPV (cast from a THF solution). The sensors were kept at a temperature of 37°C and placed in a small (3 cm 3 ) flow-through chamber, connected to a dedicated flow system as described in details elsewhere [6,7]. The set-up was built to select a steady flow (100 mL/min) of air saturated by a particular solvent vapour for 1 min, followed by dry air for 4 min (recovery time) and then repeating the cycle for the other chosen solvent vapours in a random order.…”

Section: Preparation and Testing Of The Sensormentioning

confidence: 99%

“…The set-up was built to select a steady flow (100 mL/min) of air saturated by a particular solvent vapour for 1 min, followed by dry air for 4 min (recovery time) and then repeating the cycle for the other chosen solvent vapours in a random order. The saturated vapours were generated by bubbling dry air through bottles containing the appropriate solvents, immersed in a thermostatic bath at 15°C, and had the following concentrations (in vol.-%) [7]: acetone (16.8), ethanol (4.1), ethyl acetate (6.6), n-propanol (1.4), toluene (2.1), water (1.7), acetic acid (1.2), methanol (8.8), and diethyl ether (40.4).…”

Section: Preparation and Testing Of The Sensormentioning

confidence: 99%

“…The development of chemiresistors [1][2][3][4][5], sensitive to organic vapours, based on electrically conducting poly(thienylene-vinylene) (PTV) or arylene-vinylene oligomers has been previously described [6][7][8]. The great interest in using organic semiconductors for this purpose is that, in contrast to metal oxide semiconductors, they operate around room temperature with very low power consumption and offer better possibilities for structural variation.…”

Section: Introductionmentioning

confidence: 99%

“…The sensor's selectivity was evaluated by exposure to eight different organic vapours chosen from the prioritized list of 'chemicals often occurring in transport accidents' compiled by Stetter [11]. These compounds have been used in tests of other gas sensors [6][7][8] so that comparison with previous results is possible to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of a novel poly(p-phenylene-vinylene) derivative and its application in chemiresistive sensors for electronic noses with an unusual response to organic vapours

et al. 2004

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Abstract:We report the synthesis of a novel poly(p-phenylene-vinylene) derivative bearing dodecanoylsulfanyl side-groups (12COS-PPV). Good solubility in organic solvents was achieved. The average molecular weight was around 30 000, the energy gap 2.8 eV and the thermal stability up to 130°C. Doping with iodine vapours rose conductivity to 2·10 -6 S/cm. Gas sensors made from FeCl 3 -doped 12COS-PPV showed an unusual behaviour responding to only four of the eight different organic solvent vapours tested. Recoveries from the responses are not complete, but are reproducible and can be used to discriminate between the four solvents. Quantitative analyses are also possible since there is a good linear correlation between relative response and concentration.

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Section: Preparation and Testing Of The Sensormentioning

confidence: 99%

Section: Preparation and Testing Of The Sensormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of a novel poly(p-phenylene-vinylene) derivative and its application in chemiresistive sensors for electronic noses with an unusual response to organic vapours

et al. 2004

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“…This swelling causes disruption in the conduction pathways within the elastomer resulting in an increase in the resistivity of the material. In order to differentiate analytes, arrays of chemiresistors made with different elastomers are used and pattern recognition is used to match the sensor responses with known analyte responses [1][2][3][4][5][6][7][8][9][10][11][12]. In addition to the equilibrium sensor response, work has also been performed investigating the kinetic response of chemiresistors when exposed to high vapor pressure materials [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Development of chemiresponsive sensors for detection of common homemade explosives.

Brotherton¹,

Wheeler²

2012

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Field-structured chemiresistors (FSCRs) are polymer based sensors that exhibit a resistance change when exposed to an analyte of interest. The amount of resistance change depends on the polymer-analyte affinity. The affinity can be manipulated by modifying the polymer within the FSCRs. In this paper, we investigate the ability of chemically modified FSCRs to sense hydrogen peroxide vapor. Five chemical species were chosen based on their hydrophobicity or reactivity with hydrogen peroxide. Of the five investigated, FSCRs modified with allyl methyl sulfide exhibited a significant response to hydrogen peroxide vapor. Additionally, these same FSCRs were evaluated against a common interferrant in hydrogen peroxide detection, water vapor. For the conditions investigated, the FSCRs modified with allyl methyl sulfide were able to successfully distinguish between water vapor and hydrogen peroxide vapor. A portion of the results presented here will be submitted to the Sensors and Actuators journal. 4 AcknowledgmentsThe authors would like to acknowledge Mark Rodriguez for the XRF measurements, Cody Washburn for use of the FTIR, and Doug Read for his guidance and insight.5

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Chemiresistive Sensor Arrays for Gas/Volatile Organic Compounds Monitoring: A Review

et al. 2022

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Gas detection and monitoring are essential due to their direct impact on human health, environment, and ecosystem. Chemiresistive sensors are one of the most used classes of sensors for monitoring and measurement of gases thanks to their ease of fabrication, customizability, mechanical flexibility, and fast response time. While chemiresistive sensors can offer good sensitivity and selectivity to a particular gas in a controlled environment with known interferences, they may not be able to differentiate between various gases having similar physiochemical properties under uncontrolled conditions. To address this shortcoming of chemiresistive gas sensors, sensor arrays have been the subject of recent studies. Gas sensor arrays are a group of individual gas sensors that are arranged to simultaneously detect and differentiate multiple cross‐reactive gases. In this regard, various sensor array technologies have been developed to differentiate a given set of gases using multivariate algorithms. This review provides an insight into the different algorithms that are used to extract the data from the sensor arrays, highlighting the fabrication techniques used for developing the sensor array prototypes, and different applications in which these arrays are used.

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Chemiresistive sensors of electrically conducting poly(2,5-thienylene vinylene) and copolymers: their responses to nine organic vapours

Cited by 46 publications

References 14 publications

Synthesis of a novel poly(p-phenylene-vinylene) derivative and its application in chemiresistive sensors for electronic noses with an unusual response to organic vapours

Synthesis of a novel poly(p-phenylene-vinylene) derivative and its application in chemiresistive sensors for electronic noses with an unusual response to organic vapours

Development of chemiresponsive sensors for detection of common homemade explosives.

Chemiresistive Sensor Arrays for Gas/Volatile Organic Compounds Monitoring: A Review

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