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Columnar self-assembly of bowl shaped fluorescent liquid crystals based on calix[4]arene with schiff base units

Abstract

A new family of bowlic-shaped molecules with a calix[4]arene rigid core appended four-side displaying wide range of hexagonal columnar phase have been synthesised and well characterized. The thermal behaviour of the present compounds was established using a combination of optical polarising microscopy (POM), differential scanning calorimetry (DSC) and high-temperature powder X-ray diffraction method (XRD). It is found that all the synthesised materials show enantiotropic hexagonal columnar liquid crystal phase. The structural and conformation characterization of these newly synthesised compounds had been achieved by FT-IR, 1H NMR, and 13C NMR spectroscopy. All synthesised compounds exhibited good blue luminescence in solution under long wavelength UV light. To explore the structure property correlations, the alkoxy side chain group has been varied from lower alkyl spacer to higher alkyl spacer on the lower rim of calix[4]arene. The present research specified that the introduction of linking groups on the lower rim with n-alkoxy side group is an influence approach to obtain supramolecular bowl shape liquid crystal with contains good thermal and photophysical behaviour.

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Publication details

The article was received on 09 Apr 2018, accepted on 07 Aug 2018 and first published on 08 Aug 2018


Article type: Paper
DOI: 10.1039/C8NJ01721B
Citation: New J. Chem., 2018, Accepted Manuscript
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    Columnar self-assembly of bowl shaped fluorescent liquid crystals based on calix[4]arene with schiff base units

    V. K. Sharma, A. Sharma and R. H. Vekariya, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01721B

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