منابع مشابه
Fluorine.
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متن کاملIntroduction of fluorine and fluorine-containing functional groups.
Over 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, and highly polarized bonds to fluorine. Most fluori...
متن کاملA NEW GENERATION OF OXYNITRIDE GLASSES CONTAINING FLUORINE
Oxynitride glasses are found as grain boundary phases in silicon nitride ceramics. They are effectively alumino-silicate glasses in which nitrogen substitutes for oxygen in the glass network, and this causes increases in glass transition and softening temperatures, viscosities (by two to three orders of magnitude), elastic moduli and microhardness. Calcium silicate-based glasses containing fluo...
متن کاملOrgano - Fluorine Chemical Science Inventing the Fluorine Future 2012 Helmut
The generated resist based defects on the template in addition to the presence of particles and contaminants is critical for ultraviolet curing of nanoimprint lithographic fabrication. This procedure is proven to be suitable for advanced resist material design under the process conditions. Nanoimprint resist material containing an ultraviolet reactive fluorine surfactant was developed to modify...
متن کاملChemistry of Fluorine- 18 Radiopharmaceuticals
The chemistry of lSF has the reputation of being difficult and this is to a large extent supported by a survey of the literature, where there are many reports of reactions involving 18F where the yields are low and the reactions erratic. However, in the nine years since the last review of the chemistry of ~8F in this journal °) considerable progress has been made in understanding and controllin...
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ژورنال
عنوان ژورنال: Nature
سال: 1887
ISSN: 0028-0836,1476-4687
DOI: 10.1038/037179b0