Abstract
The design, synthesis and thermal behaviour of an oxadiazole-based liquid crystalline trimer having a cholesterol and ferrocene unit at the two terminal ends are reported. The lengths of the alkyl spacer connecting the cholesterol and oxadiazole unit and also of the alkyl spacer connecting ferrocene and aromatic core are varied. All the compounds are liquid crystalline in nature, and exhibit either TGBC*-N*-BP* or TGBC*-N* phase sequence. These trimers exhibit the TGBC* phase over a remarkably wide thermal range in both the heating and cooling cycles.
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