Search Results - "Chafin, Andrew P"

Increasing Oxygen Balance Leads to Enhanced Performance in Environmentally Acceptable High-Energy Density Materials: Predictions from First-Principles Molecular Dynamics Simulations by Guo, Dezhou, Zybin, Sergey V, Chafin, Andrew P, Goddard, William A

“…Environmental concerns have stimulated the development of green alternatives to environmentally pollutive nitramine compounds used for high-energy density…”
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Molecular Design and Characterization of High-Cetane Alkyl Diamondoid Fuels by Harvey, Benjamin G, Harrison, Kale W, Davis, Matthew C, Chafin, Andrew P, Baca, Joshua, Merriman, Walter W

“…Four alkyl diamondoids, 1-pentyladamantane (PA), 2-butyladamantane (BA), 2-propyladamantane (2-PrA), and 2-ethyladamantane (EA), were synthesized on a…”
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Synthesis and Characterization of High-Performance, Bio-Based Epoxy–Amine Networks Derived from Resveratrol by Garrison, Michael D, Savolainen, Markku A, Chafin, Andrew P, Baca, Joshua E, Bons, Austin M, Harvey, Benjamin G

“…Resveratrol is a sustainable and versatile bio-derived phenolic compound that has shown promise as a high glass-transition temperature (T g), flame-resistant…”
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The Evaluation of Secondary Amine Protecting Groups for Nitration by Chafin, Andrew P., Bottaro, Jeffrey, Rosenkoetter, Kyle E.

“…Nitramines (for example RDX, HMX and CL‐20) are frequently made by nitrolyzing tertiary amides. While generally high yielding, sometimes the amides can be…”
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Mechanisms of Decreased Moisture Uptake in Ortho-Methylated Di(cyanate ester) Networks by Guenthner, Andrew J, Wright, Michael E, Chafin, Andrew P, Reams, Josiah T, Lamison, Kevin R, Ford, Michael D, Kirby, Shawn P. J, Zavala, Jacob J, Mabry, Joseph M

“…Decreases of up to 50% in the moisture uptake of polycyanurate networks based on 2,2-bis­(4-cyanatophenyl)­propane (BADCy) and 1,1-bis­(4-cyanatophenyl)­ethane…”
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Effect of Segmental Configuration on Properties of n‑Propyl-Bridged Polycyanurate Networks by Guenthner, Andrew J, Harvey, Benjamin G, Chafin, Andrew P, Davis, Matthew C, Zavala, Jacob J, Lamison, Kevin R, Reams, Josiah T, Ghiassi, Kamran B, Mabry, Joseph M

“…The effect of the chemical configuration of network segments on the physical properties, cure properties, mechanical performance, and chemical stability of…”
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Insights into Melting Behavior of Propyl-Bridged Di(cyanate ester) Monomers through Crystal Packing, Thermal Characterization, and Computational Analysis by Ghiassi, Kamran B, Guenthner, Andrew J, Redeker, Neil D, Boatz, Jerry A, Harvey, Benjamin G, Davis, Matthew C, Chafin, Andrew P, Groshens, Thomas J

“…Four isomeric propyl-bridged di­(cyanate ester) monomers having an unexpectedly wide range of melting points were analyzed using X-ray crystallography, thermal…”
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A Pattern for Increasing the First Hyperpolarizability of a Push−Pull Polyene Dye as Indicated from DFT Calculations by Chafin, Andrew P, Lindsay, Geoffrey A

“…Density functional theory (DFT) calculations were performed on a polyene dye scaffold, keeping the end groups and bridge length the same but varying the…”
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Synthesis of polyazapolycyclic caged polynitramines by Nielsen, Arnold T., Chafin, Andrew P., Christian, Stephen L., Moore, Donald W., Nadler, Melvin P., Nissan, Robin A., Vanderah, David J., Gilardi, Richard D., George, Clifford F., Flippen-Anderson, Judith L.

“…Syntheses of new polyazapolycyclic caged polynitramines are described. Sequentially reacting…”
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Benzofuran-terminated infrared dyes and their electro-optic properties in guest–host polymers by Chafin, Andrew P., Davis, Matthew C., Lai, William W., Lindsay, Geoffrey A., Park, Dong H., Herman, Warren N.

“…► Hyperpolarizabilities of 16 new benzo-fused heterocyclic tetraenic dyes were calculated by DFT. ►All benzo-tetraenic dyes were predicted to outperform the…”
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Dipolar Alignment in an Electric Field: Effect of Lattice Arrangement by Chafin, Andrew P, Lindsay, Geoffrey A

“…Monte Carlo calculations were carried out to elucidate the dependence of dipolar alignment in a strong electric poling field on the choice of lattice. It has…”
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Poly(thiophenylanilino) and poly(furanylanilino) polymers by Baldwin, Lawrence C., Chafin, Andrew P., Deschamps, Jeffrey R., Hawkins, Samantha A., Wright, Michael E., Witker, David L., Prokopuk, Nicholas

“…Novel hybrid polymers with thiophenylanilino and furanylanilino backbones and substituted phenyl side groups are reported. The new monomers…”
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Electro-optic polymeric films of phenylethynyl dyes with transparency in the blue region of the visible spectrum by Lindsay, Geoffrey A., Davis, Matthew C., Chafin, Andrew P., Fallis, Stephen, Hoffman, Robert C., Pritchett, Timothy M., Andzelm, Jan, Rawlett, Adam M., Park, Dong, Herman, Warren N.

“…Easily processed electro-optic films are reported with potential for >100 GHz switching speeds. Dyes of the general chemical structure 1-(4-[ N-ethyl-…”
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Synthesis and Nonlinear Optical Properties of a New Syndioregic Main-Chain Hydrazone Polymer by Hayden, L. Michael, Kim, Won-Kook, Chafin, Andrew P, Lindsay, Geoffrey A

“…The synthesis of a syndioregic main-chain hydrazone nonlinear optical polymer is reported. The nonlinearity is thermally stable up to 140 °C and retains 90% of…”
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Effect of pressure and temperature on chromophore reorientation in a new syndioregic main-chain hydrazone nonlinear optical polymer by Hayden, L. Michael, Kim, Won-Kook, Chafin, Andrew P., Lindsay, Geoffrey A.

“…Second harmonic generation (SHG) was used to measure the temperature dependence of the reorientation activation volume (ΔV*) of a syndioregic main‐chain…”
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Synthesis and Nonlinear Optical Properties of a New Syndioregic Main-Chain Hydrazone Polymer. Volume 34, Number 5, February 27, 2001, pp 1493−1495 by Hayden, L. Michael, Kim, Won-Kook, Chafin, Andrew P, Lindsay, Geoffrey A

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Cover Picture: The Evaluation of Secondary Amine Protecting Groups for Nitration (Prop., Explos., Pyrotech. 10/2019) by Chafin, Andrew P., Bottaro, Jeffrey, Rosenkoetter, Kyle E.

“…The Evaluation of Secondary Amine Protecting Groups for Nitration The cover picture shows the latest study on nitration of amides into nitramines. The yields…”
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Chemistry of Tetraazapentalenes by Altmann, Karen L, Chafin, Andrew P, Merwin, Lawrence H, Wilson, William S, Gilardi, Richard

“…2,4,8,10-Tetranitrobenzotriazolo[2,1-a]benzotriazole (TACOT), although thermally very stable and insensitive as an explosive, is susceptible to attack by…”
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Polyazapolycyclics by condensation of aldehydes with amines. 3. Formation of 2,4,6,8-tetrabenzyl-2,4,6,8-tetraazabicyclo[3.3.0]octanes from formaldehyde, glyoxal, and benzylamines by Nielsen, Arnold T, Nissan, Robin A, Chafin, Andrew P, Gilardi, Richard D, George, Clifford F

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Synthesis of Tetranitrotoluenes by Nielsen, Arnold T, Christian, Stephen L, Chafin, Andrew P, Wilson, William S

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