Results 241 to 250 of about 6,129,594 (283)
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Macromolecular Symposia, 1997
AbstractSingle‐chain single crystals of isotactic polystyrene and poly(ethylene oxide) were studied by using transmission electron microscopy, high resolution electron microscopy, electron diffraction. Single‐chain single crystals were prepared by spreading a dilute solution of polymers on a water surface and collecting the resulting single‐chain ...
Jie Cao +5 more
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AbstractSingle‐chain single crystals of isotactic polystyrene and poly(ethylene oxide) were studied by using transmission electron microscopy, high resolution electron microscopy, electron diffraction. Single‐chain single crystals were prepared by spreading a dilute solution of polymers on a water surface and collecting the resulting single‐chain ...
Jie Cao +5 more
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Reversible Single-Crystal-to-Single-Crystal Isomerization of the Azo Photoswitch
Journal of the American Chemical SocietyThe reversible E ⇄ Z photoisomerization of azo molecules is of fundamental significance for the development of photoresponsive materials, but it is typically hindered in crystals due to restricted molecular motion. A longstanding challenge has been the achievement of single-crystal-to-single-crystal (SCSC) isomerization, in which isomerization occurs ...
Tongtong Dang +5 more
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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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Conversion of Single Crystals of Chlorapatite into Single Crystals of Hydroxyapatite
Nature, 1967SINGLE crystals of synthetic hydroxyapatite with minimum dimensions larger than about 0.1 mm have been required for X-ray and neutron diffraction investigations but they have not been available. The solid state exchange of chloride ions in single crystals of chlorapatite for hydroxyl ions, as reported here, produces suitably large single crystals of ...
J. C. ELLIOTT, R. A. YOUNG
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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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Single-crystal-to-single-crystal transformations
CrystEngComm, 2015Panče Naumov, Parimal K. Bharadwaj
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Single-crystal-to-single-crystal photodimerization of cinnamic acid
Journal of the American Chemical Society, 1993Enkelmann, V. +3 more
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Single-Crystal to Single-Crystal Solid-State Photochemistry
2013Understanding the mechanism of a chemical reaction is fundamental for the understanding of chemistry. Determining the structure of reacting molecules during a reaction is a major factor in exploring the mechanism of a process. There are, however, two drawbacks in the study of the structures of the reacting species during a chemical reaction when it is ...
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