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DC Field | Value | Language |
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dc.contributor.author | Radhika, S. | - |
dc.contributor.author | Sadashiva, B.K. | - |
dc.contributor.author | Pratibha, R. | - |
dc.date.accessioned | 2011-01-20T09:04:08Z | - |
dc.date.available | 2011-01-20T09:04:08Z | - |
dc.date.issued | 2010-04 | - |
dc.identifier.citation | Liquid Crystals, 2010, Vol.37, p417 | en |
dc.identifier.issn | 1366-5855-(Online) | - |
dc.identifier.issn | 0267-8292 | - |
dc.identifier.uri | http://hdl.handle.net/2289/3959 | - |
dc.description | Restricted Access. | en |
dc.description.abstract | Two new homologous series of isomeric achiral five-ring bent-core compounds containing 3,4-disubstituted biphenyl moiety have been synthesised and the mesophases that they exhibit characterised. Compounds of series A are obtained from 4-hydroxybiphenyl-3-carboxylic acid while those in series B are prepared by reversing the position of the hydroxyl and carboxylic groups. This change seems to have a profound effect on the mesophase properties. Interestingly, for compounds of series A containing the long terminal chain, a transition between two polar orthogonal smectic phases has been observed. The observed mesophases have been characterised using a combination of polarised light optical microscopy, differential scanning calorimetry, X-ray diffraction studies and electro-optical measurements. This is the first example of a transition between two partial bilayer polar orthogonal smectic phases. In addition, the effect of a fluoro substituent ortho to the strongly polar terminal cyano group on the mesophase has also been examined. | en |
dc.language.iso | en | en |
dc.publisher | Taylor & Francis | en |
dc.relation.uri | http://dx.doi.org/10.1080/02678291003632645 | en |
dc.rights | 2010 Taylor & Francis | en |
dc.subject | bent-core | en |
dc.subject | biphenyl moiety | en |
dc.subject | polar uniaxial smectic A | en |
dc.subject | polar biaxial smectic A | en |
dc.title | Occurrence of a transition between two polar orthogonal smectic phases in a new homologous series of novel bent-core compounds | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (SCM) |
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File | Description | Size | Format | |
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2010_Liquid Crystals_V37_p417.pdf Restricted Access | Restricted Access | 2.88 MB | Adobe PDF | View/Open Request a copy |
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