Results 301 to 310 of about 1,835,423 (352)
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Single‐molecule single crystals
Journal of Polymer Science Part B: Polymer Physics, 1991AbstractVarious approaches to the preparation and verification of single‐molecule single crystals are discussed for polyethylene and poly (oxyethylene). Analytic tools are electron microscopy, electron diffraction, and differential scanning calorimetry.
Haishan Bu +6 more
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Single-crystal-to-single-crystal intercalation of a low-bandgap superatomic crystal
Nature Chemistry, 2017The controlled introduction of impurities into the crystal lattice of solid-state compounds is a cornerstone of materials science. Intercalation, the insertion of guest atoms, ions or molecules between the atomic layers of a host structure, can produce novel electronic, magnetic and optical properties in many materials.
Evan S. O'Brien +15 more
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Chemical Communications, 2012
A series of Cu(II) complexes showed unprecedented reversible cascades of single-crystal-to-single-crystal (SCSC) transformations, and more interestingly, very rapid crystal dynamic processes were observed in this system via the substitution of coordinating components without loss of single crystallinity.
Gao-Chao, Lv +5 more
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A series of Cu(II) complexes showed unprecedented reversible cascades of single-crystal-to-single-crystal (SCSC) transformations, and more interestingly, very rapid crystal dynamic processes were observed in this system via the substitution of coordinating components without loss of single crystallinity.
Gao-Chao, Lv +5 more
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1994
A new method that makes use of monomolecular patches on a liquid surface has been developed for the crystallization of single chain, and single-chain single crystals of poly(ethylene-oxide) and isotactic polystyrene were investigated. The molecular mass and molecular mass distribution of samples could be found to match a statistical analysis of single ...
Haishan Bu, Erqiang Chen, Shengyong Xu
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A new method that makes use of monomolecular patches on a liquid surface has been developed for the crystallization of single chain, and single-chain single crystals of poly(ethylene-oxide) and isotactic polystyrene were investigated. The molecular mass and molecular mass distribution of samples could be found to match a statistical analysis of single ...
Haishan Bu, Erqiang Chen, Shengyong Xu
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International Journal of Biological Macromolecules, 1996
Lamellar crystals of inulin were grown by crystallizing sharp fractions of low molecular weight inulin from dilute aqueous ethanol solutions. The crystals were analyzed using three-dimensional electron diffraction and X-ray powder diagrams. Two crystalline polymorphs were observed, depending on the hydration conditions: a hydrated form which indexed on
Andre, I. +5 more
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Lamellar crystals of inulin were grown by crystallizing sharp fractions of low molecular weight inulin from dilute aqueous ethanol solutions. The crystals were analyzed using three-dimensional electron diffraction and X-ray powder diagrams. Two crystalline polymorphs were observed, depending on the hydration conditions: a hydrated form which indexed on
Andre, I. +5 more
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Bioengineering Single Crystal Growth
Journal of the American Chemical Society, 2011Biomineralization is a "bottom-up" synthesis process that results in the formation of inorganic/organic nanocomposites with unrivaled control over structure, superior mechanical properties, adaptive response, and the capability of self-repair. While de novo design of such highly optimized materials may still be out of reach, engineering of the ...
Ching-Hsuan, Wu +2 more
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Polymorphic single crystal ↔ single crystal transition in K0.975Rb0.025NO3
Crystallography Reports, 2010Polymorphic transformations in K0.975Rb0.025NO3 single crystals have been investigated by optical microscopy and X-ray diffraction. The equilibrium temperature between modifications II and III has been determined. It is established that the crystal growth at II ↔ III polymorphic transitions is accompanied by the formation and growth of daughter ...
Yu. G. Asadov, E. V. Nasirov
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Single-crystal AlN nanonecklaces
Nanotechnology, 2008Distinct single-crystal aluminum nitride nanonecklaces with uniform [1011] faceted beads are synthesized via catalyst-assisted nitriding of Al. The detailed morphology and structure of the nanonecklaces have been characterized. The growth process has been investigated by comparing the products obtained at different synthesis times.
Huatao, Wang +6 more
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Shaped protein single crystals
Acta Crystallographica Section D Biological Crystallography, 1995The formation of protein single crystals grown with the shape controlled by the geometry of the capillary used as a growth cell is presented. The shaped crystals show strong birefringence under crossed nicols and diffract as single crystals up to 1.74 A.
J M, García-Ruiz +3 more
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Journal of Nanoscience and Nanotechnology, 2001
Single crystal gallium nitride nanowires have been obtained by heating gallium acetylacetonate in the presence of carbon nanotubes or activated carbon in NH3 vapor at 910 degrees C. GaN nanowires also were obtained when the reaction of gallium acetylacetonate with NH3 was carried out over catalytic Fe/Ni particles dispersed over silica.
F L, Deepak, A, Govindaraj, C N, Rao
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Single crystal gallium nitride nanowires have been obtained by heating gallium acetylacetonate in the presence of carbon nanotubes or activated carbon in NH3 vapor at 910 degrees C. GaN nanowires also were obtained when the reaction of gallium acetylacetonate with NH3 was carried out over catalytic Fe/Ni particles dispersed over silica.
F L, Deepak, A, Govindaraj, C N, Rao
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