A5015927714- Toxic Organic Pollutants Impact
- Porphyrin and Phthalocyanine Chemistry
- Synthesis and characterization of novel inorganic/organometallic compounds
- Organometallic Complex Synthesis and Catalysis
- Lipid Membrane Structure and Behavior
- Water Treatment and Disinfection
- Mercury impact and mitigation studies
- Organometallic Compounds Synthesis and Characterization
- Mass Spectrometry Techniques and Applications
- Carbon Nanotubes in Composites
- Photochromic and Fluorescence Chemistry
- Microbial Fuel Cells and Bioremediation
- Nuclear Physics and Applications
- Advanced Chemical Sensor Technologies
- Environmental Toxicology and Ecotoxicology
- Chemical Thermodynamics and Molecular Structure
- Organic Chemistry Cycloaddition Reactions
- Gold and Silver Nanoparticles Synthesis and Applications
- Organic Electronics and Photovoltaics
- Mechanical and Optical Resonators
- Engineering and Material Science Research
- Per- and polyfluoroalkyl substances research
- Fusion materials and technologies
- Surface Chemistry and Catalysis
- Analytical Chemistry and Sensors
Naval Information Warfare Center Pacific
2013-2023
United Kingdom Atomic Energy Authority
2023
Culham Science Centre
2023
United States Navy
2015-2018
U.S. Army Engineer Research and Development Center
2011-2017
United States Army Corps of Engineers
2017
Thomas Jefferson National Accelerator Facility
2017
United States Army
2011-2017
Walker (United States)
2017
Naval Information Warfare Systems Command
2003-2015
The dimerization and tendency to form higher aggregates of two isomeric metal-free phthalocyanine compounds with tetracumylphenoxy peripheral substitution at the alpha (1 or 4, 5 8, 9 12, 13 16) beta (2 3, 6 7, 10 11, 14 15) positions has been analysed by spectroscopic measurements. constants in chloroform solution are 1.3 × 1 M −1 7.0 3 respectively. At concentrations greater than −3 , isomer forms a spectroscopically resolvable aggregate. Q-band spectra dimer each aggregate were generated....
Abstract An efficient synthesis of phthalocyanines prepared from ortho ‐substituted phthalonitriles is described. The precursor to these phthalocyanines, 3‐nitrophthalonitrile, a key reagent for syntheses substituted at the 3‐position by means nucleophilic aromatic substitutions. example this type phthalocyanine, 3‐(4‐cumylphenoxy)phthalonitrile, compared with phthalocyanine derived 4‐(4‐cumylphenoxy)phthalonitrile. Substitution more sterically crowded site causes 20 nm bathochromic shift...
Research into nanoparticles has increased markedly during the last decade, especially in light of their potential diagnostic and therapeutic use. While silver been used since ancient times, a detailed understanding kinetics its dermal absorption requires further study. Thus far, only vitro animal models have to analyse characteristics nanocrystalline particles no vivo study using intact human skin demonstrated absorption.A dressing was applied sample 16 healthy patients with normal...
Brillouin Energy (BEC) has continued performing calorimetry measurements on the metal (e.g. Ni)/ceramic/Cu coated ceramic tube (catalyst) in a H2 atmosphere with nanosecond pulses applied across coatings. The Research Center (ERC) been examining and verifying BEC’s for over 5 years. Over 2000 runs were performed 300 different catalyst tubes using stimulation parameters. A new reactor system designed implemented only mass flow calorimetry. This led to more reliable understandable thermal...
The present study evaluated polar organic chemical integrative samplers (POCIS) for quantification of conventional munitions constituents, including trinitrotoluene (TNT), aminodinitrotoluenes, diaminonitrotoluenes, dinitrotoluene, and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) in a field setting. POCIS were deployed at varying distances from the commonly used explosive formulation composition B (39.5% TNT, 59.5% RDX, 1% wax) an embayment Santa Rosa Sound (Pensacola, FL, USA)....
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are a large group of synthetic compounds that have emerged as chemicals concern in drinking water groundwater. Typically, such waters treated to remove PFAS by passing the through bed sorbent material (e.g., activated carbon anion exchange resins [AIX]). However, efficacy these sorbents varies depending on types concentrations PFAS, addition quality conditions organic matter content conductivity (ionic strength). The choice effectively...
Nanometer scale patterns have been fabricated on a Langmuir–Blodgett deposited monolayer film of stearic acid using scanning tunneling microscope in air. Carbon deposits build up underneath the tip for voltages with absolute value greater than 4 V. Using an atomic force image, lines 25 nm wide 60 period written. As confirmed Auger electron spectroscopy, unexposed can be removed chloroform soak without affecting existing carbon patterns, and no additional could then written because removal film.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhthalocyanine GlassesR. D. George and A. W. SnowCite this: Chem. Mater. 1994, 6, 10, 1587–1588Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://pubs.acs.org/doi/10.1021/cm00046a001https://doi.org/10.1021/cm00046a001research-articleACS PublicationsRequest reuse permissionsArticle Views329Altmetric-Citations29LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant...
Germyltetracarbonylcobalt, GeH3Co(CO)4, has been prepared through reaction of germyl bromide with NaCo(CO)4 in ether, and the [2H3]germyl-analogue GeD3Co(CO)4 obtained similarly. Physical properties 1H n.m.r. spectrum are reported, vibrational mass spectra discussed. The Ge–Co bond is cleaved by HgCl2 HCl; adducts formed NMe3 related bases.
Abstract The exhaust detritiation system (EDS) of the Joint European Torus (JET) active gas handling removes tritium from gases and contaminated air prior to discharge stack. was replaced JET’s experimental campaign due corrosion damage. In this paper, following topics are presented: function description, failure previous EDS, enhancements for replacement EDS including testing acid passivation column, commissioning experience, operating experience performance. Acids hydrofluoric were...
Abstract The Active Gas Handling System (AGHS) stores, supplies and re-processes tritium for the JET fusion experiment. plant had not operated in this capacity recent years required upgrade recommissioning to enable use during latest campaigns. Thousands of transfers operations have now been performed with over 1 kg total supplied subsequently recovered reprocessed. This paper summarises AGHS providing examples from campaigns, presents knowledge gained lessons learnt. A summary sub-system...
Abstract As a result of military training and weapon testing activities, unexploded ordnance (UXO; including munitions such as bombs, projectiles, mines that did not function intended) are present in underwater environments. Munitions also at sites discarded (DMM). In addition to explosive safety considerations, regulators increasingly concerned about potential ecological impacts on the aquatic environment following corrosion breaching shells may cause slow release material by dissolution...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of an oligomeric mercury-bridged phthalocyanineR. D. George, A. W. Snow, P. F. McMillan, V. BurrowsCite this: J. Am. Chem. Soc. 1992, 114, 21, 8286–8287Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/ja00047a047https://doi.org/10.1021/ja00047a047research-articleACS PublicationsRequest reuse permissionsArticle...
When the products from reaction of digermane or methyldigermane with iodine at temperatures > – 63° were treated MeMgl, new compounds 1,1- and 1,2-dimethyldigermane, 1,1,2-trimethyldigermane prepared. The 1H n.m.r. vibrational spectra are reported course discussed. Small amounts three further tentatively identified as two tetra- penta-methyldigermanes.
Munitions constituents (MC) may be released into aquatic environments as a result of underwater military munitions (UWMM) corrosion and breach. The present study investigated the release 2,4,6-trinitrotoluene (TNT) hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) from Composition B fragments under 2 realistic exposure scenarios in large flume with flow set at 15 cm/s: first represented MC fully exposed B, second through small hole, simulating breached munition. Release hole was approximately 10...