Results 31 to 40 of about 211,193 (207)

Highly Fluorinated Benzobisbenzothiophenes

open access: yesOrganic Letters, 2008
Expedient, facile syntheses of highly fluorinated benzobisbenzothiophenes (BBBT) are reported. Defined peripheral arrangements of sulfur and fluorine atoms lead to extensive crystalline networks of edge-to-edge S-F close contacts. The effects of various substitution patterns on self-assembly and electronic properties are described.
Wang Y.   +3 more
openaire   +3 more sources

Fluorine-induced gradient electric field in mesoporous covalent organic frameworks for efficient separation of polarized perfluorinated gases

open access: yesNature Communications
The challenge of effectively capturing and separating perfluorinated gases is critical due to environmental concerns and the potential to recover these gases as high-value products in the silicon semiconductor industry.
Mengyao Chen   +10 more
doaj   +1 more source

Molecular fluorine chemistry in the early Universe

open access: yes, 2007
Some models of Big Bang nucleosynthesis suggest that very high baryon density regions were formed in the early Universe, and generated the production of heavy elements other than lithium such as fluorine F.
A. Lipovka   +50 more
core   +2 more sources

Discovery of Interstellar Hydrogen Fluoride [PDF]

open access: yes, 1997
We report the first detection of interstellar hydrogen fluoride. Using the Long Wavelength Spectrometer (LWS) of the Infrared Space Observatory (ISO), we have detected the 121.6973 micron J = 2 - 1 line of HF in absorption toward the far-infrared ...
Atkinson R.   +13 more
core   +3 more sources

Catalytic Asymmetric Fluorinations

open access: yesChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bobbio, C, Gouverneur, V
openaire   +2 more sources

Full runner electrolyzer stack for industrial-current-density NOx −-mediated ammonia synthesis from air and water

open access: yesNature Communications
Plasma-electrochemical tandem conversion with NOx − as intermediates promises a route for renewable ammonia (NH3) synthesis from air and water. However, a critical challenge lies in developing electrolyzers capable of operating efficiently at large ...
Wei Liu   +10 more
doaj   +1 more source

Revisited fluorine abundances in the globular cluster M22 (NGC 6656)

open access: yes, 2013
Fluorine is a fairly good tracer of formation histories of multiple stellar populations in globular clusters as already revealed by several studies. Large variations in fluorine abundance in red giant stars of the globular cluster M22 have been recently ...
de Laverny, P., Recio-Blanco, A.
core   +1 more source

WDX-Analysis of the New Superconductors RO(1-x)F(x)FeAs and Its Consequences on the Electronic Phase Diagram

open access: yes, 2009
Polycrystalline samples of RO1-xFxFeAs (0 < x < 0.25) (R = La, Sm, Gd) were investigated by wavelength-dispersive X-ray spectroscopy (WDX) in the electron microscope to determine the composition of the samples, in particular the fluorine content.
Anke Köhler   +5 more
core   +1 more source

Comparative study on thermal behavior of three highly thermostable energetic materials: z-TACOT, PYX, and TNBP

open access: yesFirePhysChem, 2021
The thermal behavior, decomposition kinetics and mechanisms of three heat-resistant explosives (HREs), 1,3,7,9-tetranitrodibenzo-1,3a,4,6a-tetraazapentalen (z-TACOT), 2,6-bis(picrylamino)-3,5-dinitropyridine (PYX), and 4,8-di(2,4,6-trinitrophenyl ...
Ning Liu   +5 more
doaj   +1 more source

A data-driven reduced-order model for fast prediction of resonant acoustic flow under vertical vibration based on secondary decomposition

open access: yesAIP Advances
Accurate dimensionality reduction models are crucial for constructing real-time computational digital twin systems for process equipment. To deepen the understanding of acoustic resonance flow mechanisms and optimize equipment design, a high-precision ...
Yuqi Gao   +5 more
doaj   +1 more source

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