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http://hdl.handle.net/2289/6920| Title: | Ethyl 7-hydroxycoumarin-3-carboxylate derivatives: Synthesis, characterization and effect of liquid crystal properties. |
| Authors: | Srinivasa, H.T. Palakshamurthy, B.S. Mohammad, AbdulKarim-Talaq |
| Keywords: | Coumarins Biphenyl SmA Phase Nematic phase |
| Issue Date: | Mar-2018 |
| Publisher: | Elesvier B.V. |
| Citation: | Journal of Molecular Structure, 2018, Vol.1155, p 513-519 |
| Abstract: | Two sets of new ethyl 7-hydroxycoumarin-3-carboxylate derivatives were synthesized and characterized to study the liquid crystalline properties. Chemical structures were confirmed by IR, NMR, CHN analysis techniques. Mesomarphic properties were accomplished by DSC, POM and X-ray studies. Density functional theory calculations and photophysical studies also performed. In the first set, smaller homologues of alkoxybenzoic acid derivatives exhibit monotropic smectic A (SmA) and higher homologous exhibit enantiotropic smectic A mesophase. The second set alkyl biphenyl derivatives exhibit stable SmA and nematic (N) mesophases. The well defined focal conic texture for SmA and threaded texture for nematic mesophases have been observed. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/6920 |
| ISSN: | 0022-2860 |
| Alternative Location: | https://doi.org/10.1016/j.molstruc.2017.11.055 |
| Copyright: | 2017 Elsevier B.V. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2018_JournalMolStr_1155_513.pdf Restricted Access | Restricted Access | 1.96 MB | Adobe PDF | View/Open Request a copy |
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