Interaction of nitrogen dioxide with sulfonamide-substituted phthalocyanines: Towards NO2 gas sensor

Pochekailov, Sergii; Nožár, Juraj; Nešpůrek, S.; Rakušan, Jan; Karásková, Marie

doi:10.1016/j.snb.2011.12.087

Cited by 32 publications

(15 citation statements)

References 51 publications

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“…The response time of such polymers toward NACs vapour at room temperature was about 10 minutes. In this study, it has been found that the response time for the NACs vapour gained in our method is much smaller compared to the previous works reported by Menga et al, 34 Pochekailov et al 35 and Curcumin-glycerol solution and curcumin-amino acid conjugates are also efficient in sensing nitroaromatic chemicals as their fluorescence activity remarkably changes in presence of NACs.…”

Section: Comparative Studymentioning

confidence: 51%

Instant detection of picric acid vapour by developing layer by layer polymer detectors and an electronic prototype

et al. 2015

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Detection of ultra-trace amount of picric acid have attracted substantial efforts from the perspective of health, safety and environment. Due to very low vapour pressure, the detection of picric acid vapour is quite challenging in comparison to that of the liquid phase. In this work, we have overcome this problem by developing layer by layer polymer detectors and an electronic prototype for instant detection of ppm level concentration of picric acid vapour via impedance spectroscopy. The detectors constitute of mainly two polymer layers with poly-cholesteryl methacrylate sulfonated hexene as the two outer layers and copolymer of 2-vinyl pyridine with acrylonitrile as the middle layer. In presence of the analyte, the detectors undergo steep decrease in impedance within few seconds. The thickness of the individual polymer layers play a vital role and it was observed that the detector with thinner outer layers (0.25 mm) is more efficient as it shows about 99 % decrease in the impedance for 0.334 ppm of picric acid vapour within 10 seconds. The method is selective, the effect of varying humidity is negligible and the detection limit was found to be 0.006 ppm. Moreover, the detectors show reproducible results and are also consistent for a long period. Using these detectors, we have designed an electronic prototype for visual detection of picric acid at room temperature. Unlike other sophisticated techniques the prototype is simple, portable, cost effective and can be used for detection of such higher explosives due to various implications such as homeland security, forensic and criminal investigations and remediation of explosive manufacturing sites. Please do not adjust margins Please do not adjust margins quadrupole resonance, 25 amperometry, 26 gas chromatography coupled with a mass spectrometer 27 etc. Although, Scheme-1: Schematic representation of the chemical structure of PA and the protocol for the detection of PA vapour using LBL detectors via impedance (Z) measurements with time and the electronic prototype for visual detection of such chemicals. Impedance (Z) measurements of the LBL detectors in presence of NACs were performed in HIOKI 3532-50, LCR Hi-TESTER. Results and discussion3.1 Fabrication of the detectors and working mechanism: To fabricate the monolayer polymer detectors, the polymers P2VP-Co-

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Section: Comparative Studymentioning

confidence: 51%

Instant detection of picric acid vapour by developing layer by layer polymer detectors and an electronic prototype

et al. 2015

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“…Pcs were used to sense toxic [29][30][31], corrosive [32], and explosive [33] gases. The sensitivity values and measured VOCs vapors concentrations for previously reported Pc-based gas sensors are summarized in Table 3 which also includes the values obtained for the film of 6 in this study.…”

Section: Gas Sensing Propertiesmentioning

confidence: 99%

Synthesis, characterization, electrochemistry and VOC sensing properties of novel ball-type dinuclear metallophthalocyanines

Çimen

Ermiş

Dumludağ

et al. 2014

Sensors and Actuators B: Chemical

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“…[1,2] Discotic mesogens are currently considered a new generation of organic semiconductors with unique properties that are destined to replace conjugated polymers commonly used for these purposes. [3] In our work aimed at the creation of materials for photovoltaic and sensor devices, we set a task to replace the compositions where each component is individually responsible for glass formation, absorption of light, electron transport and one-dimensional conductivity necessary for the operation of these devices [4,5] by a material combining all these properties.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties and Supramolecular Organization of Mix-Substituted Phthalocyanine Holmium Complex in Langmuir-Schaefer Films

Kazak¹,

Усольцева²,

Смирнова³

et al. 2015

MHC

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Interaction of nitrogen dioxide with sulfonamide-substituted phthalocyanines: Towards NO2 gas sensor

Cited by 32 publications

References 51 publications

Instant detection of picric acid vapour by developing layer by layer polymer detectors and an electronic prototype

Instant detection of picric acid vapour by developing layer by layer polymer detectors and an electronic prototype

Synthesis, characterization, electrochemistry and VOC sensing properties of novel ball-type dinuclear metallophthalocyanines

Optical Properties and Supramolecular Organization of Mix-Substituted Phthalocyanine Holmium Complex in Langmuir-Schaefer Films

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