Definitions of basic terms relating to polymer liquid crystals (IUPAC Recommendations 2001)
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چکیده
منابع مشابه
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A mean field theory is presented to describe cholesteric phases in mixtures of a polymer and a cholesteric liquid crystal. Taking into account an anisotropic coupling between a polymer and a liquid crystal, we examine the helical pitch, twist elastic constant, and phase separations. Analytical expressions of the helical pitch of a cholesteric phase and the twist elastic constant are derived as ...
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A unified scale is recommended for reporting the NMR chemical shifts of all nuclei relative to the (1)H resonance of tetramethylsilane. The unified scale is designed to provide a precise ratio, Xi, of the resonance frequency of a given nuclide to that of the primary reference, the (1)H resonance of tetramethylsilane (TMS) in dilute solution (volume fraction, varphi<1%) in chloroform. Referencin...
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ژورنال
عنوان ژورنال: Pure and Applied Chemistry
سال: 2002
ISSN: 1365-3075,0033-4545
DOI: 10.1351/pac200274030493