Selective and rapid detection of nerve agent simulants by polymer fibers with a fluorescent chemosensor in gas phase

Dagnaw, Fentahun Wondu; Feng, Wei; Song, Qin‐Hua

doi:10.1016/j.snb.2020.127937

Cited by 30 publications

(13 citation statements)

References 44 publications

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“…Recently, using different strategies, the detection method of sarin gas has been the subject of numerous investigations [34][35][36]. It is obvious that sensing devices are required to detect extremely low sarin concentrations and, more importantly, to be able to respond very rapidly.…”

Section: Dimethyl Methylphosphonate (Dmmp)mentioning

confidence: 99%

Composites based on conductive polymer with carbon nanotubes in DMMP gas sensors – an overview

Nurazzi

Harussani

Zulaikha

et al. 2021

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A number of recent terrorist attacks make it clear that rapid response, high sensitivity and stability are essential in the development of chemical sensors for the detection of chemical warfare agents. Nerve agent sarin [2-(fluoro-methyl-phosphoryl) oxypropane] is an organophosphate (OP) compound that is recognized as one of the most toxic chemical warfare agents. Considering sarin’s high toxicity, being odorless and colorless, dimethyl methylphosphonate (DMMP) is widely used as its simulant in the laboratory because of its similar chemical structure and much lower toxicity. Thus, this review serves to introduce the development of a variety of fabricated chemical sensors as potential sensing materials for the detection of DMMP in recent years. Furthermore, the research and application of carbon anotubes in DMMP polymer sensors, their sensitivity and limitation are highlighted. For sorption-based sensors, active materials play crucial roles in improving the integral performances of sensors. The novel active materials providing hydrogen-bonds between the polymers and carbon nanotubes are the main focus in this review.

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Section: Dimethyl Methylphosphonate (Dmmp)mentioning

confidence: 99%

Composites based on conductive polymer with carbon nanotubes in DMMP gas sensors – an overview

Nurazzi

Harussani

Zulaikha

et al. 2021

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“…surface-enhanced Raman scattering (SERS)-based sensors, that recognize the target analytes utilizing the electromagnetic field enhancement of plasmonic substrates in combination with the chemical specificity of vibrational Raman spectroscopy; [69] iv) supramolecular sensors, involving the occurrence of non-covalent interactions between the sensing system and the analyte; [8] v) biosensors, in which the biological recognition component should be immobilized and have intimate contact with the transducer upon binding with the analyte, yielding ultimately qualitative and quantitative responses; [85] vi) liquid crystal-based sensors, that, upon contact with the analyte, yield orientational (and thus optical) responses; [86] vii) colorimetric and fluorescence sensors, more investigated than the previously mentioned ones, enabling gas detection through the measurement of color/luminescence variations. [4,9,12,[15][16][17]23,25,59,87] In this broad context, chemoresistive gas sensors based on nanostructured semiconducting oxides yield various important advantages, encompassing moderate processing costs, compatibility with silicon technology, miniaturization possibility, simple operation, and high sensitivity. [29,30,47,56,57,60,75,[88][89][90][91] The general working principle of such sensors has already been well described in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9,12,15,16,36,38,49–53 ] As a consequence, increasing worldwide efforts have been aimed at their disposal, destruction [ 10,11,19,54,55 ] and — very importantly — sensitive and prompt recognition, an imperative issue for the public health system. [ 12,15,17,23,45,56–66 ] In the latter context, the scientific community has devoted in the last decades a growing interest to the development of sensing platforms for CWAs detection, especially as far as chemoresistive gas sensors are concerned ( Figure ).…”

Section: Introductionmentioning

confidence: 99%

“…[9] The production of such compounds continued throughout the Cold War, subsequently leading to stockpiles of arsenals in U.S. and Russian military deposits. [10,11] CWAs were then tragically employed during the Vietnam War in the early 1970s, and, more recently, in the Iran-Iraq war, [12,13] in the Gulf Wars, [14] and in Syria. [9,[15][16][17][18] In 2012, it was estimated that North Korea may possess 2500-5000 tons of CWAs.…”

mentioning

confidence: 99%

“…[44] Highly lethal CWAs, that can be classified into four main categories (see Table 1; nerve, blood, vesicant, and choking agents [2,4,5,10,17,28,[45][46][47][48] ) can burn and blister skin/eyes, enter into the body in blood and attack the nervous system. [9,12,15,16,36,38,[49][50][51][52][53] As a consequence, increasing worldwide efforts have been aimed at their disposal, destruction [10,11,19,54,55] and -very importantly -sensitive and prompt recognition, an imperative issue for the public health system. [12,15,17,23,45,[56][57][58][59][60][61][62][63][64][65][66] In the latter context, the scientific community has devoted in the last decades a growing interest to the development of sensing platforms for CWAs detection, especially as far as chemoresistive gas sensors are concerned (Figure 1).…”

mentioning

confidence: 99%

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Metal Oxide Nanosystems As Chemoresistive Gas Sensors for Chemical Warfare Agents: A Focused Review

Barreca

Maccato

Gasparotto

2022

Adv Materials Inter

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The early and efficient detection of chemical warfare agents (CWAs), hazardous compounds resulting in fatal and irreversible health damages, is an issue of primary importance for security safeguard. Despite the efforts undertaken to date, the quest of lower detection limits, higher selectivity/stability, and faster recognition still represents a main bottleneck to effectively counteract such dreadful threats. This review aims at providing a survey on the developments undertaken in chemoresistive gas sensors based on metal oxide nanosystems for CWA recognition. The sensing mechanisms proposed in the literature, as well as the main reasons underlying the performance enhancement for functionalized/composite systems, are reviewed and discussed. The work summarizes key results achieved so far, and attempts to provide guidelines to overcome the main open problems. Efforts are devoted to delivering information on material properties/performance interplay, highlighting challenges in their fabrication and functional characterization. In fact, despite the advances made, a rational design and understanding of interfacial properties, as well as a perfect control over system growth, mandatory for commercial applications, are still missing. At the conclusion, a brief outlook on development prospects for future advancements is presented, endeavoring to provide a vision on the next necessary steps for an eventual technological implementation.

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Optical Fiber Sensors: Working Principle, Applications, and Limitations

Elsherif

Salih

Muñoz

et al. 2022

Advanced Photonics Research

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An optical fiber is a flexible, transparent, and cylindrical waveguide made of plastic or silica, with diameters slightly thicker than that of a human hair (Figure 1a). [1] Optical fibers deliver/guide light for long distances with low losses. Single-index optical fibers consist of a transparent core covered with a transparent cladding material of a lower refractive index. The total internal reflection allows for guiding light in the fiber core; however, based on the waveguide analysis the energy of the transferred light is not fully trapped in the fiber core but a portion of the light travels in the cladding as evanescent waves. When the incident light hits the core-clad interface at angles larger than its critical angle, the light is completely reflected and guided in the fiber. In contrast, the incident light which meets the interface at smaller angles is refracted into the cladding to be lost. The critical angle is the minimum angle required to attain the total internal reflection, which is determined by the refractive index difference between the core and cladding materials. [2] Fibers can be classified into two categories based on the number of guided modes: single-mode and multimode fibers.

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Selective and rapid detection of nerve agent simulants by polymer fibers with a fluorescent chemosensor in gas phase

Cited by 30 publications

References 44 publications

Composites based on conductive polymer with carbon nanotubes in DMMP gas sensors – an overview

Composites based on conductive polymer with carbon nanotubes in DMMP gas sensors – an overview

Metal Oxide Nanosystems As Chemoresistive Gas Sensors for Chemical Warfare Agents: A Focused Review

Optical Fiber Sensors: Working Principle, Applications, and Limitations

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