Molecular Weight Effects on Particle and Polymer Microstructure in Concentrated Polymer Solutions
Abstract not provided
Kim, So Youn↗
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Results for “Polymer”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Thieno[3,4-b]thiophene Acceptors with Alkyl, Aryl, Perfluoroalkyl, and Perfluorophenyl Pendants for Donor-Acceptor Low Bandgap Polymers
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solar (photovoltaic), charge transport, materials ↗
Sub-5 nm Domains in Ordered Poly(cyclohexylethylene)-block-poly(methyl methacrylate) Block Polymers for Lithography
Abstract not provided
Kennemur, Justin G.↗
Structural and Conformational Dispersion in the Rational Design of Conjugated Polymers
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bio-inspired↗
Thermally Reversible Aggregation of Gold Nanoparticles in Polymer Nanocomposites Through Hydrogen Bonding
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solar (photovoltaic), charge transport, materials ↗
High thermal conductivity in amorphous polymer blends by engineered interchain interactions
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charge transport↗
Ternary blend polymer solar cells with enhanced power conversion efficiency
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bio-inspired↗
Poly(fluorene-co-thiophene)-based ionic transition-metal complex polymers for solar energy harvesting and storage applications
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catalysis (heterogeneous)↗
Functionalized high performance polymer membranes for separation of carbon dioxide and methane
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membrane, carbon capture, materials and chemistry ↗
Synthesis and spectroscopic properties of a soluble semiconducting porphyrin polymer
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bio-inspired↗
Melt crystallization/dewetting of ultrathin PEO films via carbon dioxide annealing: the effects of polymer adsorbed layers
N/A
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗
Probing hydrogen and halogen-oxo interactions in uranyl coordination polymers: a combined crystallographic and computational study
Four uranyl compounds containing either benzoic acid ( 1 ), m -chlorobenzoic acid ( 2 ), m -bromobenzoic acid ( 3 ), or m -iodobenzoic acid ( 4 ) are described, and the latter two compounds are used to probe non-covalent interaction strengths via structural, vibrational, and computational means.
Chemistry↗
In situ formed polymer gel electrolytes for lithium batteries with inherent thermal shutdown safety features
An in situ formed poly(vinylene carbonate)–lithium iodide gel electrolyte enables stable cycling of lithium metal and a thermal shutdown function.
Zhou, Hongyao↗
Non-fullerene acceptors with direct and indirect hexa-fluorination afford >17% efficiency in polymer solar cells
The rational molecular design of non-fullerene acceptors (NFAs) in organic solar cells (OSCs) can profoundly influence the photovoltaic (OPV) performance.
Li, Guoping↗
Solid additive tuning of polymer blend morphology enables non-halogenated-solvent all-polymer solar cells with an efficiency of over 17%
The treatment of toluene solvent and DTT additive enables the PBQ6:PYF-T- o -based all-PSC devices with PCE up to 17.06%, which is one of the highest value in non-halogenated-processed all-PSCs to date.
Chemistry↗
Band tail recombination in polymer:fullerene organic solar cells
Recombination through band tail localized states is studied analytically and by measurement of the forward-bias dark current as a function of temperature in three different organic bulk-heterojunction solar cells. The Shockley-Read-Hall mechanism is analyzed for the specific case of recombination between mobile carriers and an exponential distribution of localized band tail states. The analysis gives a simple relation between the dark current ideality factor and the band tail slope. Assumptions of the model are verified by numerical drift-diffusion modeling. Diode current-voltage measurements give good agreement with the analytical model, confirming that the band tail recombination mechanism applies to at least some organic solar cells. Deep traps provide a secondary recombination channel in some devices.
14 SOLAR ENERGY↗
An in situ tensile test apparatus for polymers in high pressure hydrogen
Degradation of material properties by high-pressure hydrogen is an important factor in determining the safety and reliability of materials used in high-pressure hydrogen storage and delivery. Hydrogen damage mechanisms have a time dependence that is linked to hydrogen outgassing after exposure to the hydrogen atmosphere that makes ex situ measurements of mechanical properties problematic. Designing in situ measurement instruments for high-pressure hydrogen is challenging due to known hydrogen incompatibility with many metals and standard high-power motor materials like Nd. Here we detail the design and operation of a solenoid based in situ tensile tester under high-pressure hydrogen environments up to 5,000 psi. Here, modulus data from high-density polyethylene (HDPE) samples tested under high-pressure hydrogen are also reported as compared to baseline measurements taken in air.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗