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http://hdl.handle.net/2289/4005| Title: | The first examples of discotic liquid crystalline gemini surfactants |
| Authors: | Kumar, Sandeep Gupta, Satyam Kumar |
| Keywords: | Gemini surfactant Ionic liquid crystal Discotic Triphenylene Imidazole Columnar mesophase |
| Issue Date: | 13-Oct-2010 |
| Publisher: | Elsevier Ltd. |
| Citation: | Tetrahedron Letters, 2010, Vol.51, p5459 |
| Abstract: | Six novel gemini imidazolium salts tethered with hexaalkoxytriphenylene moieties were prepared by quaternization of imidazole nitrogen with ω-bromo-substituted triphenylene derivatives. Their chemical structures were examined by 1H NMR, IR, UV, MS, and elemental analyses. The mesomorphic properties of these discotic dimeric salts were investigated by polarizing optical microscopy, differential scanning calorimetry, and X-ray diffraction studies. These triphenylene-imidazole-based gemini dimers with bromide as counter ion were found to exhibit liquid crystalline behavior over a wide temperature range and display ionic conductivity in the range of 10−6 to 10−5 S/m. These materials tend to form monolayer at the air–water interface. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/4005 |
| ISSN: | 0040-4039 |
| Alternative Location: | http://dx.doi.org/10.1016/j.tetlet.2010.08.022 |
| Copyright: | 2010 Elsevier Limited. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2010_Tetrahedron Letters_V51_p5459.pdf Restricted Access | Restricted Access | 669.4 kB | Adobe PDF | View/Open Request a copy |
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