Search Results - "Dewey, Nicholas S."

Unimolecular Reactions of 2‑Methyloxetanyl and 2‑Methyloxetanylperoxy Radicals by Doner, Anna C., Dewey, Nicholas S., Rotavera, Brandon

“…Alkyl-substituted cyclic ethers are intermediates formed in abundance during the low-temperature oxidation of hydrocarbons and biofuels via a chain-propagating…”
Get full text

Ketenimine Formation Catalyzed by a High-Valent Cobalt Carbene in Bulky Alkoxide Ligand Environment by Grass, Amanda, Dewey, Nicholas S, Lord, Richard L, Groysman, Stanislav

“…High-valent cobalt carbene Co­(OR)2(CPh2) (OR = OC t Bu2Ph) undergoes reaction with various isocyanides CNR′ (CNR′ = 2,6-dimethylphenyl isocyanide,…”
Get full text

Multigram Synthesis of a Combustion‐Relevant δ‐Ketohydroperoxide through Sulfonylhydrazine Substitution by Ke, Yan‐Ting, Gall, Bradley K., Dewey, Nicholas S., Rotavera, Brandon, Ferreira, Eric M.

“…A synthesis of a δ‐ketohydroperoxide is described, addressing potential functional‐group compatibilities in these elusive species relevant to combustion and…”
Get full text

Alkylperoxy radicals are responsible for the formation of oxygenated primary organic aerosol by El Hajj, Omar, Hartness, Samuel W, Vandergrift, Gregory W, Park, Yensil, Glenn, Chase K, Anosike, Anita, Webb, Annabelle R, Dewey, Nicholas S, Doner, Anna C, Cheng, Zezhen, Jatana, Gurneesh S, Moses-DeBusk, Melanie, China, Swarup, Rotavera, Brandon, Saleh, Rawad

“…Organic aerosol (OA) is an air pollutant ubiquitous in urban atmospheres. Urban OA is usually apportioned into primary OA (POA), mostly emitted by mobile…”
Get full text

Reaction mechanisms of alkyloxiranes for combustion modeling by Dewey, Nicholas S., Rotavera, Brandon

“…Cyclic ethers are intermediates formed from unimolecular reaction of carbon-centered hydroperoxy-substituted radicals (̇QOOH), which are central to…”
Get full text

Probing O2-dependence of cyclopentyl reactions via isomer-resolved speciation by Hill, Annabelle W., Moore, Daelyn A., Dewey, Nicholas S., Hartness, Samuel W., Rotavera, Brandon

“…Modeling chemical kinetics relevant to low-temperature combustion requires complete description of reactions involving critical species such as…”
Get full text

Multigram Synthesis of a Combustion‐Relevant δ‐Ketohydroperoxide through Sulfonylhydrazine Substitution by Ke, Yan‐Ting, Gall, Bradley K., Dewey, Nicholas S., Rotavera, Brandon, Ferreira, Eric M.

“…Abstract A synthesis of a δ‐ketohydroperoxide is described, addressing potential functional‐group compatibilities in these elusive species relevant to…”
Get full text

Probing O2-dependence of tetrahydrofuranyl reactions via isomer-resolved speciation by Koritzke, Alanna L., Dewey, Nicholas S., Christianson, Matthew G., Hartness, Samuel, Doner, Anna C., Webb, Annabelle R., Rotavera, Brandon

“…Low-temperature oxidation of tetrahydrofuran involves competing reactions that depend on temperature, pressure, and oxygen concentration, including…”
Get full text

Probing O2 dependence of hydroperoxy-butyl reactions via isomer-resolved speciation by Hartness, Samuel W., Dewey, Nicholas S., Christianson, Matthew G., Koritzke, Alanna L., Doner, Anna C., Webb, Annabelle R., Rotavera, Brandon

“…Degenerate chain-branching mechanisms of n-alkanes are centered on the formation of hydroperoxy-alkyl radicals (̇QOOH), formed via ̇R + O2 reactions, and the…”
Get full text

Probing O2 dependence of hydroperoxy-butyl reactions via isomer-resolved speciation by Hartness, Samuel W., Dewey, Nicholas S., Christianson, Matthew G., Koritzke, Alanna L., Doner, Anna C., Webb, Annabelle R., Rotavera, Brandon

“…Degenerate chain-branching mechanisms of n-alkanes are centered on the formation of hydroperoxy-alkyl radicals ($\dot{Q}$OOH), formed via $\dot{R}$ + O2…”
Get full text

Low-temperature ignition and oxidation mechanisms of tetrahydropyran by Hartness, Samuel W., Saab, Marwa, Preußker, Matthias, Mazzotta, Rosalba, Dewey, Nicholas S., Hill, Annabelle W., Vanhove, Guillaume, Fenard, Yann, Heufer, K. Alexander, Rotavera, Brandon

“…Cyclic ethers are relevant as next-generation biofuels and are also combustion intermediates that follow directly from unimolecular decomposition of…”
Get full text

O2-Dependence of reactions of 1,2-dimethoxyethanyl and 1,2-dimethoxyethanylperoxy isomers by Dewey, Nicholas S., De Ras, Kevin, de Vijver, Ruben Van, Hartness, Samuel W., Hill, Annabelle W., Thybaut, Joris W., Van Geem, Kevin M., Sheps, Leonid, Rotavera, Brandon

“…Reaction mechanisms of R˙ and ROO˙ radicals derived from low-temperature oxidation of 1,2-dimethoxyethane (CH3O(CH2)2OCH3) were investigated using speciation…”
Get full text

Vacuum-ultraviolet absorption cross-sections of functionalized four-carbon species by Doner, Anna C., Webb, Annabelle R., Dewey, Nicholas S., Hartness, Samuel W., Christianson, Matthew G., Koritzke, Alanna L., Larsson, Alexander, Frandsen, Kelsey M., Rotavera, Brandon

“…•Quantitative, high-resolution absorption spectra measured in the vacuum-ultraviolet for four-carbon species, including hydrocarbons and oxygenates, the…”
Get full text

Machine learning models for binary molecular classification using VUV absorption spectra by Doner, Anna C., Moran, Hayden A., Webb, Annabelle R., Christianson, Matthew G., Koritzke, Alanna L., Dewey, Nicholas S., Hartness, Samuel W., Rotavera, Brandon

“…•Machine learning models constructed for statistical classification of species molecular structure based on vacuum ultraviolet absorption…”
Get full text

Erratum: Machine learning models for binary molecular classification using VUV absorption spectra by Doner, Anna C., Moran, Hayden A., Webb, Annabelle R., Christianson, Matthew G., Koritzke, Alanna L., Dewey, Nicholas S., Hartness, Samuel W., Rotavera, Brandon

Get full text

Machine Learning Models for Binary Molecular Classification using VUV Absorption Spectra by Doner, Anna C., Moran, Hayden A., Webb, Annabelle R., Christianson, Matthew G., Koritzke, Alanna L., Dewey, Nicholas S., Hartness, Samuel W., Rotavera, Brandon

“…Machine learning methods were combined with differential absorption spectroscopy measurements in the vacuum-ultraviolet region (5.167 – 9.920 eV) in order to…”
Get full text