ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
We have synthesized two types of all-organic radical liquid crystalline (LC) compounds,trans-2-alkoxyphenyl-5-[4-(4-alkoxybenzenecarbonyloxy)phenyl]-2,5-dimethylpyrrolidine-1-oxy(1) and 4-alkoxyphenyl trans-4-[5-(4-alkoxyphenyl)-2,5-dimethylpyrrolidine-1-oxy-2-yl]benzoate(2) and have fully characterized their LC properties. Although the only difference in the molecularstructure between 1 and 2 is the orientation of a binding group connecting the core portion and oneside-chain (-OCO- and -COO- for 1 and 2), the racemic or enantiomerically enriched 2 showed anSmA phase, or SmA* and TGBA* phases, which were not observed for 1, besides N and SmC, or N*and SmC* phases, respectively. Here we discuss the origin of these differences on the basis of theircrystal structures determined by X-ray crystallographic analysis
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.55.42.pdf
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