Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/3688
Title: | Synthesis and characterisation of novel rod-disc oligomers |
Authors: | Pal, Santanu Kumar Kumar, Sandeep Seth, Jhumur |
Keywords: | rod-disc oligomer rufigallol-based oligomer biaxial nematic |
Issue Date: | May-2008 |
Publisher: | Taylor & Francis |
Citation: | Liquid Crystals, 2008, Vol.35, p521 |
Abstract: | Microwave-promoted synthesis of novel rufigallol-based liquid crystalline oligomers, containing six rod-like cyanobiphenyl moieties connected to the rufigallol core via flexible alkyl spacers, is reported. The synthesis of the target compounds was challenging since classical reactions failed to produce these oligomers. Differential scanning calorimetry and polarising optical microscopy analysis revealed the existence of a nematic phase with a shorter spacer and a smectic A (SmA) phase with a longer spacer. The compound with medium alkyl spacer exhibits both nematic and SmA phases at higher temperature and a re-entrant nematic phase at lower temperature. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/3688 |
ISSN: | E-ISSN: 1366-5855 P-ISSN: 0267-8292 |
Alternative Location: | http://dx.doi.org/10.1080/02678290802051072 |
Copyright: | 2008 Taylor & Francis |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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2008 LC V35 p521.pdf Restricted Access | Restricted Access | 485.7 kB | Adobe PDF | View/Open Request a copy |
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