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DC Field | Value | Language |
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dc.contributor.author | Sadashiva, B.K. | - |
dc.contributor.author | Reddy, Amaranatha R. | - |
dc.contributor.author | Pratibha, R. | - |
dc.contributor.author | Madhusudana, N.V. | - |
dc.date.accessioned | 2007-06-28T08:03:34Z | - |
dc.date.available | 2007-06-28T08:03:34Z | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Journal of Materials Chemistry, 2002, Vol.12, p943 - 950 | en |
dc.identifier.issn | 0959-9428 | - |
dc.identifier.issn | 1364-5501 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/3170 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | Several compounds belonging to three new series of five-ring banana-shaped esters, which are unsymmetrically substituted with respect to the central phenyl ring, have been synthesised. One of the arms of these bent-core molecules has been terminally substituted with a highly polar cyano group while the other end contains an alkoxy chain. The mesophases exhibited by these compounds have been characterised using a combination of optical polarising microscopy, differential scanning calorimetry and X-ray diffraction studies. These studies indicate that most of the compounds show two smectic A mesophases which have a partial bilayer ordering. Conoscopic experiments clearly reveal that the lower temperature smectic A phase is biaxial in nature. A structural model has been proposed for the lower temperature biaxial smectic A phase. It is argued that quartets of molecules, which are conducive to the formation of the biaxial phase, can form in the layers. The in-layer birefringence of the biaxial smectic A phase has also been measured as a function of temperature for one of the compounds. | en |
dc.format.extent | 268181 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Royal Society of Chemistry | en |
dc.relation.uri | http://dx.doi.org/10.1039/b109546c | en |
dc.rights | 2002 Royal Society of Chemistry | en |
dc.title | Biaxial smectic A phase in homologous series of compounds composed of highly polar unsymmetrically substituted bent-core molecules | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (SCM) |
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2002 JOURNAL OF MATERIALS CHEM V12 943p.pdf Restricted Access | Restricted Access | 261.9 kB | Adobe PDF | View/Open Request a copy |
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