کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9757652 | 1496382 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and mesomorphic properties of glycosyl dialkyl- and diacyl-glycerols bearing saturated, unsaturated and methyl branched fatty acid and fatty alcohol chains
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کلمات کلیدی
LPSLαVIILβHII - اینDecomposition - تجزیهCub - تولهCrystalline - جامد کریستالی، کریستالSMA - دبیرستانInfrared spectroscopy - طیف سنجی مادون قرمزBicontinuous cubic phase - فاز مکعبی بی رویهLamellar phases - فازهای لایه ایCubic phases - مراحل مکعبیSmall-angle X-ray scattering - پراکندگی اشعه ایکس با زاویه کوچکLiquid crystal - کریستال های مایعcol - کول
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and mesomorphic properties of glycosyl dialkyl- and diacyl-glycerols bearing saturated, unsaturated and methyl branched fatty acid and fatty alcohol chains Synthesis and mesomorphic properties of glycosyl dialkyl- and diacyl-glycerols bearing saturated, unsaturated and methyl branched fatty acid and fatty alcohol chains](/preview/png/9757652.png)
چکیده انگلیسی
The biophysical properties of a series of glycosyl dialkyl- and diacyl-glycerols bearing unsaturated or chiral methyl branched chains in the tail, and di- and trisaccharide carbohydrate headgroups are described. Thermotropism was investigated by polarising microscopy, the lyotropism was investigated by small angle X-ray diffraction and by the contact preparation method, and the gel to liquid crystalline phase transition by FT-IR-spectroscopy. The compounds displayed thermotropic Smectic A (SmA), cubic and columnar phases, whereas in the lyotropic phase diagram lamellar, hexagonal and cubic phases are found. The introduction of unsaturated or methyl branched chains leads to liquid crystallinity at ambient temperature. The difference between the 1,3-oleyl-glycerol maltoside and the corresponding 1,2-oleoyl-glycerol maltoside is small.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemistry and Physics of Lipids - Volume 135, Issue 1, May 2005, Pages 15-26
Journal: Chemistry and Physics of Lipids - Volume 135, Issue 1, May 2005, Pages 15-26
نویسندگان
Götz Milkereit, Klaus Brandenburg, Sven Gerber, Michel H.J. Koch, Michael Morr, Jörg Andrä, Ulrich Seydel, Volkmar Vill,