Abstract
Microwave promoted synthesis of novel imidazolium-based ionic liquid crystalline dimers containing calamitic-calamitic, calamitic-discotic and discotic-discotic moieties is reported. Classical reactions failed to produce these dimers. The thermotropic liquid crystalline properties of these salts were investigated by polarizing optical microscopy, differential scanning calorimetry and X-ray diffractometry. These salts, except the one having calamitic-discotic units, with bromide as counter ion were found to be mesomorphic over a wide temperature range.
Original language | English |
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Pages (from-to) | 8993-8997 |
Number of pages | 5 |
Journal | Tetrahedron Letters |
Volume | 47 |
Issue number | 50 |
DOIs | |
State | Published - 11 Dec 2006 |
Externally published | Yes |
Keywords
- Cyanobiphenyl
- Discotic liquid crystals
- Imidazolium salts
- Ionic liquid crystals
- Microwaves
- Triphenylene