白茶冲泡Synthesis and characterization of new ries of ferroelectric liquid crystals containing一学就会的小魔术
钟繇怎么读oligooxyethylene spacers
期刊名称： Liquid Crystals
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作者： Chen, Jr-Hong,Chang, Rong-Chi,Hsiue, Ging-Ho,Guu, Feng-Wei,Wu, Shung-Long
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年份： 1995年天高地阔
期号： 第2期
关键词： SEQUENCE ALIGNMENT;DATABASE SEARCH;PATTERN
职场笑话RECOGNITION;STRUCTURAL MOTIF;3D-DISPLAY;G PROTEIN-COUPLED
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祖国祖国摘要：Four ries of ferroelectric liquid crystals containing oligooxyethylene spacers have been synthe
sized. The obtained liquid crystal compounds were characterized by NMR, differential scanning calorimetry (DSC) and optical polarized microscopy (POM). The properties of the liquid crystalline pha were investigated as a function of spacer units, numbers of core aromatic rings, and different terminal asymmetric moieties. It was found that (i) the pha transition temperature decread with the increasing oligooxyethylene spacer unit, (ii) the liquid crystalline phas were enhanced in three phenyl ring system than in two phenyl ring system, and (iii) ferroelectric liquid crystals containing different terminal asymmetric moieties exhibited novel mesopha phenomena. A twist grain boundary pha (TGBA pha) was obrved in some
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