Detection of organophosphorus compounds using a surface acoustic wave array sensor based on supramolecular self-assembling imprinted films

Pan, Yong; Guo, Tengxiao; Zhang, Gen wei; Yang, Junchao; Liu, Yang; Cao, Bingqing

doi:10.1039/d0ay00211a

Cited by 13 publications

(9 citation statements)

References 28 publications

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“…Pan et al, developed a SAW-based array sensitive to several organophosphate chemical weapons [ 113 ]. Targeting diisopropyl methyl phosphonate and dimethyl methylphosphonate (DMMP), sarin acid was used as the template.…”

Section: Template Imprintingmentioning

confidence: 99%

Template Imprinting Versus Porogen Imprinting of Small Molecules: A Review of Molecularly Imprinted Polymers in Gas Sensing

Cowen

Cheffena

2022

IJMS

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The selective sensing of gaseous target molecules is a challenge to analytical chemistry. Selectivity may be achieved in liquids by several different methods, but many of these are not suitable for gas-phase analysis. In this review, we will focus on molecular imprinting and its application in selective binding of volatile organic compounds and atmospheric pollutants in the gas phase. The vast majority of indexed publications describing molecularly imprinted polymers for gas sensors and vapour monitors have been analysed and categorised. Specific attention was then given to sensitivity, selectivity, and the challenges of imprinting these small volatile compounds. A distinction was made between porogen (solvent) imprinting and template imprinting for the discussion of different synthetic techniques, and the suitability of each to different applications. We conclude that porogen imprinting, synthesis in an excess of template, has great potential in gas capture technology and possibly in tandem with more typical template imprinting, but that the latter generally remains preferable for selective and sensitive detection of gaseous molecules. More generally, it is concluded that gas-phase applications of MIPs are an established science, capable of great selectivity and parts-per-trillion sensitivity. Improvements in the fields are likely to emerge by deviating from standards developed for MIP in liquids, but original methodologies generating exceptional results are already present in the literature.

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Section: Template Imprintingmentioning

confidence: 99%

Template Imprinting Versus Porogen Imprinting of Small Molecules: A Review of Molecularly Imprinted Polymers in Gas Sensing

Cowen

Cheffena

2022

IJMS

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“…Diisopropylmethylphosphonate (DIMP), dimethyl-methylphosphonate (DMMP), diethyl-methylphosphonate (DEMP), dimethyl phosphonate (DMHP), triethylphosphate (TEP), and trimethyl phosphate (TMP) are common simulants for sarin, and several more potential simulant compounds are listed by Bennett et al Among the low toxic simulants, DMMP is the work-horse in nerve agent-like investigations . Nevertheless, there has been active research on properties of the nerve agents with the usage of DIMP as their simulant, − and several works focused on DIMP as a simulant for sarin in particular. − Moreover, for studying the thermal decomposition mechanisms of sarin, it may be the most promising simulant: DIMP is the only one with the same oxygen/isopropyl group (−O−) as found in sarin . Therefore, this work focuses on sarin and its simulants, DMMP and DIMP; the chemical structures of these compounds are shown in Figure .…”

Section: Introductionmentioning

confidence: 99%

Force Fields for Molecular Modeling of Sarin and its Simulants: DMMP and DIMP

et al. 2021

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Even three decades after signing the Chemical Weapons Convention, organophosphorus chemical warfare agents (CWAs), such as sarin, remain a threat. The development of novel methods for the detection of CWAs, protection from CWAs, and CWA decontamination motivates research on their physicochemical properties. Due to the extreme toxicity of sarin, most of the experimental studies are carried out using less toxic simulant compounds. In addition to experimental studies of sarin simulants, both sarin and simulants can be studied using in silico experimentsmolecular simulations. The results of classical molecular modeling of the compounds and their agreement with experimental data rely on the force field used to describe the system. In recent years, there have been several force fields proposed for sarin and its most common simulant dimethyl methylphosphonate (DMMP). However, other simulants frequently used in experiments received less attention from the molecular simulation perspective, for example, to date, there is no force field and no simulation data for diisopropyl methylphosphonate (DIMP). Here, we compare the literature force fields for sarin and DMMP, focusing specifically on the vapor–liquid equilibrium for the pure species. We carried out Monte Carlo and molecular dynamics simulations using the existing literature force fields from which we predicted the liquid densities and vapor pressures developing the entire binodal curves. We compared the predictions to the experimental data and showed that the TraPPE-UA force field outperformed the other force fields. Thus, we extended TraPPE-UA for DIMP, utilized this force field in molecular simulations, and predicted the liquid densities and vapor pressures for a range of temperatures (binodal curve), which agreed well with the published experimental data. From the binodal, we calculated the critical properties of DIMP and demonstrated that these parameters can be used in the Peng–Robinson equation of state for this compound.

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“…74 Selektivni površinski sloj na kojem dolazi do sorpcije ima velik potencijal za daljnji razvoj s obzirom na to da se mnogi polimeri i kompozitni materijali mogu upotrebljavati za primjenu u takvom senzoru. 78 Primjer budućeg razvoja tih detektora pokazuje i istraživanje Fahima i sur., koji razvijaju detektor na osnovi temperaturno programirane desorpcije jer svaki spoj ima specifičnu desorpciju neovisno o njegovoj koncentraciji. 79 Postoji i fotoakustična (engl.…”

Section: Površinski Akustični Valunclassified

Tehnologije koje se primjenjuju za terensku detekciju bojnih otrova: II. dio – Detektori nove generacije

Cetina¹,

Tušek²,

Ključarić³

2022

Kemija U Industriji

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Shortly after introduction of commercial automatic chemical detectors, mostly based on ion mobility spectrometry technology, at the end of 20 th century field devices using other chemical detection techniques (FTIR, Raman, GC-MS, surface acoustic wave, photoacoustic, electrochemical, biosensor and others) were developed. Among these techniques, portable GC-MS detectors provide very reliable qualitative and quantitative chemical analysis, but high cost of these devices, the complexity of operating with them and the complexity of sample preparation for analysis present a problem. Some chemical detection technologies cannot be used for the development of a reliable hand-held chemical detector, and not a single technique, for the time being, allows the development of a universal chemical detector. A potential solution is the development of a multi-sensor device that compensates negative sides of each of the sensors. This paper provides an overview of commercially available chemical detectors based on new generation detection technologies and an overview of scientific research focused on further development of detection with simpler, more reliable and preferably cheaper solutions is given.

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Detection of organophosphorus compounds using a surface acoustic wave array sensor based on supramolecular self-assembling imprinted films

Abstract: In this study, diisopropyl methylphosphonate (DIMP), tributyl phosphate (TBP), and dimethyl methylphosphonate (DMMP) were selected as organophosphorus chemical warfare agent (CWA) simulants.

Cited by 13 publications

References 28 publications

Template Imprinting Versus Porogen Imprinting of Small Molecules: A Review of Molecularly Imprinted Polymers in Gas Sensing

Template Imprinting Versus Porogen Imprinting of Small Molecules: A Review of Molecularly Imprinted Polymers in Gas Sensing

Force Fields for Molecular Modeling of Sarin and its Simulants: DMMP and DIMP

Tehnologije koje se primjenjuju za terensku detekciju bojnih otrova: II. dio – Detektori nove generacije

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