Synthesis and characterization of novel imidazolium-based ionic discotic liquid crystals with a triphenylene moiety
| dc.contributor.author | Kumar, Sandeep | |
| dc.contributor.author | Pal, Santanu Kumar | |
| dc.date.accessioned | 2007-05-16T06:36:58Z | |
| dc.date.available | 2007-05-16T06:36:58Z | |
| dc.date.issued | 2005-04-11 | |
| dc.description | Restricted Access. | en |
| dc.description.abstract | Two novel triphenylene-tethered imidazolium salts were synthesized either by the quaternization of 1-methylimidazole with an ω-bromo-substituted triphenylene or by the quaternization of a triphenylene-substituted imidazole with methyl iodide. Their chemical structures were determined by 1H NMR, 13C NMR, IR, UV spectroscopy and elemental analysis. The thermotropic liquid crystalline properties of these salts were investigated by polarizing optical microscopy and differential scanning calorimetry. These triphenylene-based imidazolium salts with bromide or iodide as counterion show columnar mesophase properties over a wide temperature range. | en |
| dc.format.extent | 234130 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Tetrahedron Letters,2005, Vol.46, p2607-2610 | en |
| dc.identifier.issn | 0040-4039 | |
| dc.identifier.uri | http://hdl.handle.net/2289/2316 | |
| dc.language.iso | en | en |
| dc.publisher | Elsevier B.V. | en |
| dc.relation.uri | http://dx.doi.org/10.1016/j.tetlet.2005.02.100 | en |
| dc.rights | 2005 Elsevier B.V. | en |
| dc.subject | Ionic liquid crystals | en |
| dc.subject | Triphenylene | en |
| dc.subject | Discotic liquid crystals | en |
| dc.subject | Columnar mesophase | en |
| dc.subject | Imidazolium salts | en |
| dc.title | Synthesis and characterization of novel imidazolium-based ionic discotic liquid crystals with a triphenylene moiety | en |
| dc.type | Article | en |