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http://hdl.handle.net/2289/2885| Title: | Synthesis and mesomorphic properties of some esters of trans-4-n-alkoxycinnamic and trans-4-n-alkoxy-alpha-methylcinnamic acids exhibiting ferroelectric and antiferroelectric phases |
| Authors: | Kasthuraiah, N. Sadashiva, B.K. Krishna Prasad, S. Nair, Geetha G. |
| Issue Date: | Jan-1998 |
| Publisher: | Taylor & Francis |
| Citation: | Liquid Crystals, 1998, Vol.24, p639 - 645 |
| Abstract: | The synthesis and mesomorphic properties of several homologues of (S)-(+)-1-methylheptyl 4-[4(trans-4-n-alkoxycinnamoyloxy)benzoyloxy]benzoates (series I) and (S)-(+)-1-methylheptyl 4-[4-(trans-4-n-alkoxy-alpha-methylcinnamoyloxy)benzoyloxy]benzoates (series II) are described. The influence of the alpha -methyl group on the different mesophases and the clearing temperatures has been evaluated. Many homologues of both the series show a ferroelectric chiral smectic C (SmC*) phase while the antiferroelectric smectic C phase (SmC*A) is exhibited by compounds of series I. The mesophases have been identified by optical polarizing microscopy, differential scanning calorimetry and miscibility studies. The spontaneous polarization, the helical pitch and the tilt angle of two of the compounds have also been measured.1 |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/2885 |
| ISSN: | 0267-8292 1366-5855 (Online) |
| Alternative Location: | http://dx.doi.org/10.1080/026782998206740 |
| Copyright: | 1998 Taylor & Francis |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1998 LC24p639.pdf Restricted Access | Restricted Access | 284.02 kB | Adobe PDF | View/Open Request a copy |
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