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On-Surface Synthesis of Nonmetal Porphyrins
Journal of the American Chemical Society, 2020We report the on-surface synthesis of a nonmetal porphyrin, namely, silicon tetraphenylporphyrin (Si-TPP), by the deposition of atomic silicon onto a free-base TPP layer on a Ag(100) surface under ultrahigh vacuum (UHV) conditions. Scanning tunneling microscopy provides insights into the self-assembly of the TPP molecules before and after Si insertion.
Aleksandr Baklanov +10 more
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Reports on Progress in Physics, 1970
An account is given of some of the mechanisms which can lead to a transition from a metallic to a nonmetallic state, when a parameter such as the interatomic distance or temperature is varied. The simplest of these is the band overlap or Wilson transition, which occurs when a conduction band overlaps a valence band; this is discussed in § 2 and for ...
N F Mott, Z Zinamon
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An account is given of some of the mechanisms which can lead to a transition from a metallic to a nonmetallic state, when a parameter such as the interatomic distance or temperature is varied. The simplest of these is the band overlap or Wilson transition, which occurs when a conduction band overlaps a valence band; this is discussed in § 2 and for ...
N F Mott, Z Zinamon
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Putting Nonmetals into Fullerenes
ChemInform, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
Martin Saunders, R. James Cross
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Phase diagram and thermal properties of organic analogues of nonmetal–nonmetal systems
Journal of Thermal Analysis and Calorimetry, 2015The solid–liquid phase equilibrium data on three binary organic systems, namely 4-hydroxy benzaldehyde (HB)–2-methyl-4-nitro aniline (MNA), 3-hydroxy-4-methoxybenzaldehyde (HMB)–2-chloro-4-nitroaniline (CNA) and 4-aminobenzophenone (ABP)–m-nitrobenzoic acid (NBA), determined by the thaw-melt method, show the formation of a eutectic at 0.60 mol fraction
R. N. Rai, Priyanka Pandey, U. S. Rai
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2016
In the preceding chapters, the specific examples used concerned metals. This stems partly from the author’s experience but also from the fact that the majority of the research on diffusion in solids has been done with metals. There is reason to believe that all the general theory and most of the physical phenomena discussed in the earlier chapters ...
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In the preceding chapters, the specific examples used concerned metals. This stems partly from the author’s experience but also from the fact that the majority of the research on diffusion in solids has been done with metals. There is reason to believe that all the general theory and most of the physical phenomena discussed in the earlier chapters ...
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Perfluorovinyl derivatives of nonmetals
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19601. As a result of the reaction between perfluorovinylmagnesium iodide and PCl3, AsCl3, and SbCl3, the corresponding tris-(trifluorovinyl)-phosphine, tris-(trifluorovinyl)-arsine, and tris-(trifluorovinyl)-stibine were obtained. 2. Amides of the type ClP(NR2)2 reacted smoothly with R'MgX (where R' is alkyl or perfluoroalkenyl) to form ...
R. N. Sterlin +3 more
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1996
Introduction superconductors structural materials optical materials conducting materials semiconducting materials insulating materials other materials.
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Introduction superconductors structural materials optical materials conducting materials semiconducting materials insulating materials other materials.
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1971
The mechanical properties of polymers differ fundamentally in many respects from those of metals and much of this difference can be ascribed to the characteristic structures of these two classes of material. Most polymers consist of long molecular chains which are built up from a large number of single molecular units called mers.
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The mechanical properties of polymers differ fundamentally in many respects from those of metals and much of this difference can be ascribed to the characteristic structures of these two classes of material. Most polymers consist of long molecular chains which are built up from a large number of single molecular units called mers.
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EFFECT OF SURFACE ROUGHNESS ON EMITTANCE OF NONMETALS
Journal of the Optical Society of America, 1965It has been observed experimentally, both at NBS and elsewhere, that the emittance of polished metals can be markedly increased by roughening the surface, by as much as a factor of 2 or 3. For nonmetals and particularly white ceramic materials, on the other hand, the emittance appears to be essentially independent of surface roughness, at least for ...
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Carbene Complexes of Nonmetals
European Journal of Organic Chemistry, 2005AbstractElectrophilic carbenes accept a variety of n‐ and π‐donors. The products range from persistent ylides to matrix‐isolated xenon complexes. Ylides can be viewed as carbene complexes if they regenerate carbenes thermally or undergo concerted methylene transfer reactions.
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