Abstract
A new strategy for preparing room-temperature discotic nematic materials is proposed and developed stepwise to improve various discotic nematic properties. This approach replaces one sidearm of the discotic hexakis(4- hexyloxyphenylethynyl)benzene with a tris(alkoxy) sidearm, 1-ethynyl-2,3,4- tris(hexyloxybenzene), to lower transition temperatures, manipulate discotic nematic ranges, and preserve the discotic nematic superstructure while preventing column formation. Although symmetry considerations play a role in the resulting mesogenic properties, steric hindrance and van der Waals interactions are ascribed to the superior discotic nematic properties of the newly prepared discogens containing a laterally substituted sidearm.
Original language | English |
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Pages (from-to) | 1896-1902 |
Number of pages | 7 |
Journal | Advanced Functional Materials |
Volume | 17 |
Issue number | 12 |
DOIs | |
State | Published - 13 08 2007 |
Externally published | Yes |