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Lingtao Kong et al.
The Analyst, 135(2), 368-374 (2010-01-26)
Fabrication of hybridized single-walled carbon nanotube (SWNT) device based on novel sensing material N-4-Hexafluoroisopropanolphenyl-1-pyrenebutyramide (HFIPP) via facile approach has been reported for the first time. Considered that strong hydrogen-bonding can be formed between HFIPP and dimethyl methylphosphonate (DMMP) (simulant of...
Andre Heptner et al.
Journal of chromatography. A, 1356, 241-248 (2014-07-13)
Identifying the compounds of an unknown gas mixture by using an ion mobility spectrometer (IMS) is a difficult task, because several ion species can be generated in the ionization process. One method to analyze the occurring peaks in an IMS...
M R Menlyadiev et al.
The Analyst, 140(9), 2995-3002 (2015-03-25)
Proton-bound dimers were dissociated to protonated monomers in air at ambient pressure and temperature using electric fields of ultrahigh Field Asymmetric Ion Mobility Spectrometry (ultraFAIMS) with the onset of dissociation for ethyl acetate as 96 Td and for dimethyl methyl...
Alexander Vergara et al.
Analytical chemistry, 84(17), 7502-7510 (2012-07-28)
This paper presents a unique perspective on enhancing the physicochemical mechanisms of two distinct highly sensitive nanostructured metal oxide micro hot plate gas sensors by utilizing an innovative multifrequency interrogation method. The two types of sensors evaluated here employ an...
Nobuaki Mera et al.
Journal of hazardous materials, 177(1-3), 274-280 (2010-01-05)
The aim of our study is to develop apparatuses that use TiO(2) for effective decontamination of air contaminated by Sarin gas. We performed photocatalytic decomposition of gaseous dimethyl methylphosphonate (DMMP) by TiO(2) and identified the oxidization products. The high activity...
Patrick F Conforti et al.
The journal of physical chemistry. A, 113(49), 13752-13761 (2009-11-03)
Electronic structure and molecular dynamics calculations were performed on the reaction systems O((3)P) + sarin and O((3)P) + dimethyl methylphosphonate (DMMP), a sarin simulant. Transition state geometries, energies, and heats of reaction for the major reaction pathways were determined at...
Ariya Akthakul et al.
Analytical chemistry, 82(15), 6487-6494 (2010-07-10)
We report a turn-on sensor framework with enhanced vapor sensitivity by increasing the sensor's response dynamic range via rational design of the sensor formulation. Using a fluorescent dye as the reporter, our approach begins by reducing sensor background fluorescence through...
Marta Lafuente et al.
Journal of hazardous materials, 384, 121279-121279 (2019-10-14)
The development of SERS substrates for chemical detection of specific analytes requires appropriate selection of plasmonic metal and the surface where it is deposited. Here we deposited Ag nanoplates on three substrates: i) conventional SiO2/Si wafer, ii) stainless steel mesh...
V M Bermudez
Langmuir : the ACS journal of surfaces and colloids, 29(5), 1483-1489 (2013-01-29)
The interaction of dilute solutions of dimethyl methylphosphonate (DMMP) in H(2)O with thin porous layers of γ-Al(2)O(3) has been studied under steady-state conditions using infrared multiple-internal-reflection spectroscopy. Upon the initial introduction of the DMMP solution to a previously H(2)O-saturated surface...
Study of the catalytic destruction of dimethyl methylphosphonate (DMMP): oxidation over molybdenum (110)
Smentkowski VS, et al.
The Journal of Physical Chemistry, 92(22), 6351-6357 (1988)
Ming-Tsung Lee et al.
The journal of physical chemistry. B, 115(46), 13617-13623 (2011-10-13)
Interactions of nerve G-agents (sarin and soman) and their simulants DMMP (dimethyl methylphosphonate) and DIFP (diisopropyl fluorophosphate) with water and components of polyelectrolyte membranes are studied using ab initio calculations in conjunction with thermodynamic modeling using the conductor-like screening model...
Jun Seop Lee et al.
ACS nano, 5(10), 7992-8001 (2011-09-13)
Ultrafine metal-oxide-decorated hybrid carbon nanofibers (CNFs) were fabricated by a single-nozzle co-electrospinning process using a phase-separated mixed polymer composite solution and heat treatment. To decorate metal oxides on the CNF surface, core (PAN) and shell (PVP) structured nanofibers (NFs) were...
Yanyan Wang et al.
Journal of nanoscience and nanotechnology, 11(6), 4874-4881 (2011-07-21)
Hexafluorobisphenol A (6FBPA), as a novel nerve agents sensing molecule, has been successfully attached onto the surface of single-walled carbon nanotubes (SWNTs). The sensing groups have been confirmed by infrared spectroscopy, Raman spectroscopy and X-ray photoelectron spectrometry. The results revealed...
Andrew M McAnoy et al.
The Journal of organic chemistry, 74(24), 9319-9327 (2009-11-19)
The alkaline perhydrolysis of the nerve agent O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate (VX) was investigated by studying the ion-molecule reactions of HOO(-) with O,S-dimethyl methylphosphonothioate in a modified linear ion-trap mass spectrometer. In addition to simple proton transfer, two other abundant product...
Carlos G Fraga et al.
Journal of chromatography. A, 1270, 269-282 (2012-11-28)
Dimethyl methylphosphonate (DMMP) was used as a chemical threat agent (CTA) simulant for a first look at the effects of real-world factors on the recovery and exploitation of a CTA's impurity profile for source matching. Four stocks of DMMP having...
Zhifu Pei et al.
Sensors (Basel, Switzerland), 10(9), 8275-8290 (2010-01-01)
Sensitive, selective and fast detection of chemical warfare agents is necessary for anti-terrorism purposes. In our search for functional materials sensitive to dimethyl methylphosphonate (DMMP), a simulant of sarin and other toxic organophosphorus compounds, we found that zinc oxide (ZnO)...
Julia L Rummel et al.
Analytical chemistry, 83(11), 4045-4052 (2011-04-16)
Infrared multiple photon dissociation (IRMPD) was used to generate vibrational spectra of ions produced with a direct analysis in real time (DART) ionization source coupled to a 4.7 T Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer. The location of...
Adsorption and decomposition of dimethyl methylphosphonate on TiO2
Rusu CN and Yates JT
The Journal of Physical Chemistry B, 104(51), 12292-12298 (2000)
M. Mikolajczyk et al.
The Journal of Organic Chemistry, 43, 473-473 (1978)
Suyi Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 88, 137-143 (2012-01-10)
The molecular interactions of 5,10,15,20-tetraphenylporphine zinc (ZnTPP) and 5,10,15,20-tetraphenyl-21H,23H-porphine cobalt(II) (CoTPP) with dimethyl methylphosphonate (DMMP) have been investigated by absorption/absorption difference spectroscopy. The interactions between the metalloporphyrins and DMMP change the absorbance characteristics of the porphyrins resulted from the formation...
Liangming Wei et al.
Nanotechnology, 22(42), 425501-425501 (2011-09-22)
We developed a chemiresistive sensor based on doped and functionalized semiconducting single-walled carbon nanotube (SWNT) networks for ultrasensitive and rapid detection of dimethyl methylphosphonate (DMMP) (simulant of nerve agent sarin) vapor. The semiconducting SWNT network was deposited between interdigitated electrodes...
D Matatagui et al.
Talanta, 85(3), 1442-1447 (2011-08-03)
An array of Love-wave sensors based on quartz and Novolac has been developed to detect chemical warfare agents (CWAs). These weapons are a risk for human health due to their efficiency and high lethality; therefore an early and clear detection...
Brendan L Mitchell et al.
Journal of chromatography. A, 1293, 120-125 (2013-05-04)
Activated carbon (AC) particles are utilized as an adsorbent for binding hazardous vapors in protective equipment. The binding affinity and utilization of these AC particles should be known to ensure effective and efficient use. Therefore, a simple and effective method...
P.A. Aristoff
The Journal of Organic Chemistry, 50, 1765-1765 (1985)
Cristina Tudisco et al.
Langmuir : the ACS journal of surfaces and colloids, 28(3), 1782-1789 (2011-12-22)
This paper reports on the preparation of a porous silicon-based material covalently functionalized with cavitand receptors suited for the detection of organophosphorus vapors. Two different isomeric cavitands, both containing one acid group at the upper rim, specifically designed for covalent...
Glenn A Harris et al.
Journal of the American Society for Mass Spectrometry, 23(1), 153-161 (2011-11-03)
Presented here are findings describing the spatial-dependence of sensitivity and ion suppression effects observed with direct analysis in real time (DART). Continuous liquid infusion of dimethyl methyl phosphonate (DMMP) revealed that ion yield "hot spots" did not always correspond with...
Enhanced photocatalytic degradation of dimethyl methylphosphonate in the presence of low-frequency ultrasound
Chen Y-C, et al.
Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology, 2(6), 694-698 (2003)
Soo Chool Lee et al.
Sensors (Basel, Switzerland), 11(7), 6893-6904 (2011-12-14)
The sensing behavior of SnO(2)-based thick film gas sensors in a flow system in the presence of a very low concentration (ppb level) of chemical agent simulants such as acetonitrile, dipropylene glycol methyl ether (DPGME), dimethyl methylphosphonate (DMMP), and dichloromethane...
Hiroki Mandai et al.
Bioorganic & medicinal chemistry, 22(19), 5338-5344 (2014-08-26)
Interleukin (IL)-6 is a proinflammatory cytokine that performs a wide variety of biological functions, including important roles in the progression of chronic inflammatory diseases such as periodontal disease. (+)-Terrein, a secondary bioactive fungal metabolite isolated from Aspergillus terreus, has various...
Les N McDaniel et al.
Talanta, 81(4-5), 1568-1571 (2010-05-06)
A procedure based on capillary column gas chromatographic-mass spectrometric (GC-MS) confirmation was developed for the verification of the ubiquitous and versatile chemical and nerve agent simulant, dimethyl methyl phosphonate (DMMP; CAS# 756-79-6), from gaseous samples. This method was developed to...
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