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Showing 1 to 15 of 15 for “"DMMP"”.
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Quartz Crystal Microbalance Studies of Dimethyl Methylphosphonate Sorption Into Trisilanolphenyl-Poss Films
… The sorption of dimethyl methylphosphonate (DMMP), a CWA simulant, into trisilanolphenyl-POSS (TPP) films has previously been characterized with reflection absorption infrared spectroscopy, x-ray photoelectron spectroscopy, and uptake coefficient determinations [1]. In our study, the quartz …
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Uptake and Reaction Mechanisms of CO, H2O, and the Nerve Agent Simulant, DMMP with Single Atom-Modified Zirconium-based Metal-Organic Frameworks
… exposed to water and dimethyl methylphosphonate (DMMP), a sarin simulant, to ascertain the interactions of the included Cu single atoms with the reactants required for nerve agent hydrolysis. The Cu sites were first characterized by exposure of the MOF to the infrared spectroscopic probe molecule, …
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Ionic Liquids Tethered to Activated Carbon for Capture of Airborne Toxins
… system. The simulant dimethylmethylphosophnate (DMMP) was utilized in gas capture investigations as a model for sarin gas. In order to understand the impact of the cation-anion pair selection in the IL, DMMP absorption tests were conducted in neat ILs. This was done by flowing argon saturated in …
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Investigation of Closed-Loop Control of Polyatomic Molecules
… this thesis includes ionization/fragmentation of DMMP and CH2BrI in strong femtosecond laser fields, coherent control using closed-loop optimization method for bond dissociation in both DMMP and CH2BrI, as well as application of closed-loop control as a detection method for air borne …
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Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks
… interactions between dimethyl methylphosphonate (DMMP) or dimethyl chlorophosphate (DMCP), key CWA simulants, and Zr6-based metal-organic frameworks (MOFs) have been investigated with in situ infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (PXRD), and …
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The Study of Zirconium Hydroxide and Zirconium (IV) Metal-Organic Frameworks as Reactive Substrates for the Decomposition of Chemical Warfare Agents
… nerve agent simulant dimethyl methylphosphonate, DMMP. This investigation was carried out using two different methods: 1) with the use of Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) to examine the surface reaction between DMMP and the solid; and 2) using a flow reactor …
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Metal Oxide Nanoparticles: Optical Properties and Interaction with Chemical Warfare Agent Simulants
… warfare agent dimethyl methylphosphonate (DMMP) on yttrium oxide as well as other metal oxide nanoparticles. DMMP was found to dissociate at room temperature on several types of metal oxide nanoparticles. Hydroxyl groups were found to be critical for the adsorption of DMMP onto the …
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Layer-by-layer carbon nanotube electrodes for flexible chemical sensor and energy storage applications
… agent simulant (dimethyl methylphosphonate (DMMP)). Available functional groups (-NH2 and -COOH) on the MWNT films offer a direct route for covalently attaching a receptor of interest to the MWNTs, in order to tailor the chemical specificity in a modular fashion. Here, a thiourea-based …
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Volatile Organic Compound Detection And Disease Diagnostics Using Dna-Functionalized Carbon Nanotube Sensor Arrays
… (DNT) and dimethyl methylphosphonate (DMMP) to simulate complex VOC environments. The sensors demonstrated sensitivity to parts-per-billion concentrations of DNT in a highly concentrated background of DMMP. Moreover, the shelf life of these sensors was projected on the order of months, …
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Ultrahigh Vacuum Studies of the Fundamental Interactions of Chemical Warfare Agents and Their Simulants with Amorphous Silica
… (DIMP), dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), dimethyl chlorophosphate (DMCP), and methyl dichlorophosphate (MDCP) were all observed to interact with the silica surface through the formation of a hydrogen bond between the phosphoryl oxygen of the simulant and …
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Design and Construction of a High Vacuum Surface Analysis Instrument to Study Chemistry at Nanoparticulate Surfaces
… the CWA simulant dimethyl methylphosphonate (DMMP) and nanoparticulate silicon dioxide.
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Fabrication of electrospun TiO2/polymer composite nanofibers for photocatalysis and degradation of toxins
… (CEES) and dimethyl methylphosphonate (DMMP) and were found to exhibit enhanced rates of degradation. It was seen that saturation of the TiO2 nanofibers with water prior to exposure with CEES showed an overall increased the degradation under UV irradiation. Photocatalytic degradations of …
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Development and evaluation of fire retardent unsaturated polyester clay nanocomposites.
… the fire retardant dimethyl methyl phosphonate (DMMP) to the resin caused a synergistic improvement in fire performance in one particular type of resin, possibly due to the particular type of modification used, but not revealed. The addition of 5-10wt% clay can interfere with crosslink density of …
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SYNTHESIS OF CHROMO FLUOROGENIC SENSORS FOR MOLECULAR RECOGNITION
… in order to recognize nerve agent simulant like DMMP (dimethylmethyphosphonate) by using firstly simple molecules as oximes that is well known are used in the detoxification therapy after nerve agents exposure. Unfortunately the change of the behaviour of these molecule was not as we expected …
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Hafnium Dioxide Nanoparticle Thin Film Morphology and Reactivity with Dimethyl Methylphosphonate
Organophosphonates have been used as simulants of highly toxic compounds such as chemical warfare agents in the study of the decomposition reactions that occur on the surface of hafnium dioxide. Metal oxide and metal-oxide nanoparticles have been shown to decompose organophosphonate molecules. In …