Results 51 to 60 of about 211,193 (207)

Introduction of Fluorine and Fluorine‐Containing Functional Groups [PDF]

Angewandte Chemie International Edition, 2013
AbstractOver the past decade, the most significant, conceptual advances in the field of fluorination were enabled most prominently by organo‐ and transition‐metal catalysis. The most challenging transformation remains the formation of the parent CF bond, primarily as a consequence of the high hydration energy of fluoride, strong metal—fluorine bonds ...
Liang, Theresa, Neumann, Constanze N., Ritter, Tobias   +2 more
openaire   +4 more sources

Biomimetic synthesis of vesicular covalent organic frameworks by gemini surfactants for in-situ enzyme cascade immobilization

Nature Communications
In nature, enzymes in biofilms often lack robustness and chemical functionality. Covalent organic frameworks (COFs) have emerged as a robust platform for enzyme immobilization, but mimicking biofilm structures for in-situ enzyme immobilization remains ...
Jin Zhang, You Li, Jiaxuan Li, Lin Zhu, Shangbin Jin   +4 more
doaj   +1 more source

Superconductivity in WO2.6F0.4 synthesized by reaction of WO3 with Teflon

, 2011
WO3-xFx (x < 0.45) perovskite-like oxyfluorides were prepared by a chemically reducing fluorination route using the polymer polytetrafluoroethylene (Teflon). The symmetry of the crystal structures of WO3-xFx changes from monoclinic to tetragonal to cubic
Cava, R. J., Climent-Pascual, E., Hirai, D.   +2 more
core   +1 more source

Forging Fluorine-Containing Quaternary Stereocenters by a Light-Driven Organocatalytic Aldol Desymmetrization Process [PDF]

, 2017
Reported herein is a light-triggered organocatalytic strategy for the desymmetrization of achiral 2-fluoro-substi- tuted cyclopentane-1,3-diketones.
Ametamey, Balaraman, Banik, Beeson, Borissov, Brak, Brimioulle, Brunet, Dell'Amico, Dell'Amico, Eagan, Eder, Erb, Ford, Hajos, Hamashima, Hepburn, Hintermann, Ishimaru, Jeschke, Jiang, Kalow, Kalow, Katcher, Katcher, Klán, Kwiatkowski, Lozano, Ma, Marigo, Müller, Nakamura, O'Hagan, Partridge, Prakash, Prévost, Purser, Rauniyar, Reisman, Saadi, Sammes, Steiner, Taylor, Woerly, Yang, Yang, Yang, Zeng, Zhu, Zuend   +49 more
core   +2 more sources

Development of Pyrochemical Reprocessing of the Spent Nuclear Fuel and Prospects of Closed Fuel Cycle

Atom Indonesia, 2007
Molten-Salt Reactor (MSR) is a design of an advanced reactor system from the GEN IV family working in thermal or epithermal neutron spectrum and using thorium or transuranium fuel in the form of molten fluorides.
R. Tulackova, K. Chuchvalcova-Bimova, M. Precek, M. Marecek, J. Uhlir   +4 more
doaj   +1 more source

Etch Induced Microwave Losses in Titanium Nitride Superconducting Resonators

, 2012
We have investigated the correlation between the microwave loss and patterning method for coplanar waveguide titanium nitride resonators fabricated on Si wafers.
David P. Pappas, David S. Wisbey, Jeffrey S. Kline, Jiansong Gao, Martin Sandberg, Martin Weides, Michael R. Vissers, Stern J. A.   +7 more
core   +1 more source

Hydrogen-assisted dehydrochlorination of 1,1,1,2-tetrafluoro-2-chloropropane to 2,3,3,3-tetrafluoropropene over Pd-Ag/nano-MgF2 with optimized Pd isolated sites

Communications Chemistry
Hydrogen-assisted dehydrochlorination process (HaDHC) is an attractive route for the production of fluorine-containing olefins under relatively mild conditions, so far lacking the highly efficient metal-based catalysts and their design strategy. Here, we
Chen Yang, Wei Mao, Xingzong Dong, Song Tian, Jinni Shen, Wei Zhang, Zhaotie Liu, Jian Lu, Erhard Kemnitz   +8 more
doaj   +1 more source

Microwave-assisted YBa2Cu3O7 precursors : a fast and reliable method towards chemical precursors for superconducting films [PDF]

, 2017
Highly stable, pure, and anhydrous organometallic YBa2Cu3O7- (YBCO) precursor solutions were prepared by dissolving commercial YBCO powder in acetone by trifluoroacetic anhydride (TFAA) or a mixture of TFAA with propionic acid for low fluorine precursors.
Bennewitz, Jan, Bäcker, Michael, De Keukeleere, Katrien, De Roo, Jonathan, Lynen, Frederic, Pollefeyt, Glenn, Rijckaert, Hannes, Roeleveld, Kevin, Van Driessche, Isabel   +8 more
core   +1 more source

Fluorine in a Carbon-Enhanced Metal-Poor Star

, 2007
The fluorine abundance of the Carbon-Enhanced Metal-Poor (CEMP) star HE 1305+0132 has been derived by analysis of the molecular HF (1-0) R9 line at 2.3357 microns in a high-resolution (R = 50,000) spectrum obtained with the Phoenix spectrometer and ...
Beers, T. C., Cunha, K., Lee, Y. S., Schuler, S. C., Sivarani, T., Smith, V. V.   +5 more
core   +1 more source

Synthesis of PTFE@PFAC core-shell composite particle as a highly efficient anti-dripping agent for PC

Chemical Engineering Journal Advances
Polycarbonate (PC) is kind of engineering plastics which is widely used in the fields such as automotive manufacturing and building materials due to its excellent transparency, high strength and good reprocessing ability.
Hang Wang, Wenwen Fan, Yifan Hu, Ruohan Zhang, Wen Yang, Haoyu Guo, Lan Lei, Chunjie Xie, Hui Li   +8 more
doaj   +1 more source